1 1.创建文件夹 2 //import java.io.*; 3 File myFolderPath = new File(%%1); 4 try { 5 if (!myFolderPath.exists()) 6 myFolderPath.mkdir(); 7 } 8 catch (IOException e) { 9 System.err.println("新建目录操作出错"); 10 } 11 12 2.创建文件 13 //import java.io.*; 14 File myFilePath = new File(%%1); 15 try { 16 if (!myFilePath.exists()) 17 myFilePath.createNewFile(); 18 FileWriter resultFile = new FileWriter(myFilePath); 19 PrintWriter myFile = new PrintWriter(resultFile); 20 myFile.println(%%2); 21 myFile.flush(); 22 resultFile.close(); 23 } 24 catch (IOException e) { 25 System.err.println("新建文件操作出错"); 26 } 27 28 3.删除文件 29 //import java.io.*; 30 File myDelFile = new File(%%1); 31 try { 32 if(myDelFile.delete()) 33 { 34 %%2 35 } 36 } 37 catch (IOException e) { 38 System.err.println("删除文件操作出错"); 39 } 40 41 4.删除文件夹 42 /* 43 import java.io.*; 44 import java.util.*; 45 */ 46 LinkedList<String> folderList = new LinkedList<String>(); 47 folderList.add(%%1); 48 while (folderList.size() > 0) { 49 File file = new File((String)folderList.poll()); 50 File[] files = file.listFiles(); 51 ArrayList<File> fileList = new ArrayList<File>(); 52 for (int i = 0; i < files.length; i++) { 53 if (files[i].isDirectory()) { 54 folderList.add(files[i].getPath()); 55 } else { 56 fileList.add(files[i]); 57 } 58 } 59 for (File f : fileList) { 60 f.delete(); 61 } 62 } 63 folderList = new LinkedList<String>(); 64 folderList.add(%%1); 65 while (folderList.size() > 0) { 66 File file = new File((String)folderList.getLast()); 67 if (file.delete()) 68 folderList.removeLast(); 69 else { 70 File[] files = file.listFiles(); 71 for (int i = 0; i < files.length; i++) { 72 folderList.add(files[i].getPath()); 73 } 74 } 75 } 76 77 5.删除一个文件下夹所有的文件夹 78 /* 79 import java.io.*; 80 private static LinkedList<String> folderList=null; 81 */ 82 File delfile=new File(%%1); 83 File[] files=delfile.listFiles(); 84 for(int i=0;i<files.length;i++){ 85 if(files[i].isDirectory()){ 86 if(!files[i].delete()){ 87 folderList = new LinkedList<String>(); 88 folderList.add(files[i]); 89 while (folderList.size() > 0) { 90 File file = new File((String)folderList.poll()); 91 File[] files = file.listFiles(); 92 ArrayList<File> fileList = new ArrayList<File>(); 93 for (int i = 0; i < files.length; i++) { 94 if (files[i].isDirectory()) 95 folderList.add(files[i].getPath()); 96 else 97 fileList.add(files[i]); 98 } 99 for (File f : fileList) 100 f.delete(); 101 } 102 folderList = new LinkedList<String>(); 103 folderList.add(files[i]); 104 while (folderList.size() > 0) { 105 File file = new File((String)folderList.getLast()); 106 if (file.delete()) 107 folderList.removeLast(); 108 else { 109 File[] files = file.listFiles(); 110 for (int i = 0; i < files.length; i++) { 111 folderList.add(files[i].getPath()); 112 } 113 } 114 } 115 } 116 } 117 } 118 119 6.清空文件夹 120 //import java.io.*; 121 File delfilefolder=new File(%%1); 122 if (!delfilefolder.exists() && !delfilefolder.delete()){ 123 LinkedList<String> folderList = new LinkedList<String>(); 124 folderList.add(delfilefolder.getAbsolutePath()); 125 while (folderList.size() > 0) { 126 File file = new File((String)folderList.poll()); 127 File[] files = file.listFiles(); 128 ArrayList<File> fileList = new ArrayList<File>(); 129 for (int i = 0; i < files.length; i++) { 130 if (files[i].isDirectory()) 131 folderList.add(files[i].getPath()); 132 else 133 fileList.add(files[i]); 134 } 135 for (File f : fileList) 136 f.delete(); 137 } 138 folderList = new LinkedList<String>(); 139 folderList.add(delfilefolder.getAbsolutePath()); 140 while (folderList.size() > 0) { 141 File file = new File((String)folderList.getLast()); 142 if (file.delete()) 143 folderList.removeLast(); 144 else { 145 File[] files = file.listFiles(); 146 for (int i = 0; i < files.length; i++) { 147 folderList.add(files[i].getPath()); 148 } 149 } 150 } 151 } 152 delfilefolder.mkdir(); 153 154 7.读取文件 155 //import java.io.*; 156 7.1.操作系统默认编码 157 FileReader fr=new FileReader(%%1); 158 BufferedReader br = new BufferedReader(); 159 String %%2=nul; 160 try { 161 while ((%%2 = reader.readLine()) != null) { 162 %%3 163 } 164 } catch (IOException e) { 165 e.printStackTrace(); 166 } finally{ 167 try { 168 br.close(); 169 fr.close(); 170 } catch (IOException e) { 171 e.printStackTrace(); 172 } 173 } 174 175 7.2.UTF-8编码 176 FileInputStream fis=new FileInputStream(new File(%%1)); 177 InputStreamReader read = new InputStreamReader(fis,"UTF-8"); 178 BufferedReader reader=new BufferedReader(read); 179 String %%2=null; 180 try { 181 while ((%%2 = reader.readLine()) != null) { 182 %%3 183 } 184 } catch (IOException e) { 185 e.printStackTrace(); 186 } finally{ 187 try { 188 br.close(); 189 read.close(); 190 fis.close(); 191 } catch (IOException e) { 192 e.printStackTrace(); 193 } 194 } 195 196 7.3.分块读取 197 FileInputStream fis=new FileInputStream(new File(%%1)); 198 byte[] buffer=new byte[10240]; 199 try { 200 int byteread; 201 while ((byteread=fis.read(buffer)) != -1) { 202 String %%2=new String(buffer); 203 %%3 204 } 205 } catch (IOException e) { 206 e.printStackTrace(); 207 } finally{ 208 try { 209 read.close(); 210 fis.close(); 211 } catch (IOException e) { 212 e.printStackTrace(); 213 } 214 } 215 216 8.写入文件 217 //import java.io.*; 218 8.1.操作系统默认编码 219 try { 220 FileWriter fw = new FileWriter(%%1); 221 fw.write(%%2); 222 fw.flush(); 223 fw.close(); 224 } catch (IOException e) { 225 e.printStackTrace(); 226 } 227 228 8.2.UTF-8编码 229 try { 230 OutputStreamWriter out = new OutputStreamWriter( 231 new FileOutputStream(%%1),"UTF-8"); 232 out.write(sb.toString()); 233 out.flush(); 234 out.close(); 235 } catch (UnsupportedEncodingException e) { 236 e.printStackTrace(); 237 } catch (FileNotFoundException e){ 238 e.printStackTrace(); 239 } catch (IOException e){ 240 e.printStackTrace(); 241 } 242 243 9.写入随机文件 244 //import java.io.*; 245 try { 246 RandomAcessFile logFile=new RandomAcessFile(%%1,"rw"); 247 long lg=logFile.length(); 248 logFile.seek(%%2); 249 logFile.writeByte(%%3); 250 }catch(IOException ioe){ 251 System.out.println("无法写入文件:"+ioe.getMessage()); 252 } 253 254 10.读取文件属性 255 //import java.io.*; 256 // 文件属性的取得 257 File af = new File(%%1); 258 if (af.exists()) { 259 System.out.println(f.getName() + "的属性如下: 文件长度为:" + f.length()); 260 System.out.println(f.isFile() ? "是文件" : "不是文件"); 261 System.out.println(f.isDirectory() ? "是目录" : "不是目录"); 262 System.out.println(f.canRead() ? "可读取" : "不"); 263 System.out.println(f.canWrite() ? "是隐藏文件" : ""); 264 System.out.println("文件夹的最后修改日期为:" + new Date(f.lastModified())); 265 } else { 266 System.out.println(f.getName() + "的属性如下:"); 267 System.out.println(f.isFile() ? "是文件" : "不是文件"); 268 System.out.println(f.isDirectory() ? "是目录" : "不是目录"); 269 System.out.println(f.canRead() ? "可读取" : "不"); 270 System.out.println(f.canWrite() ? "是隐藏文件" : ""); 271 System.out.println("文件的最后修改日期为:" + new Date(f.lastModified())); 272 } 273 if(f.canRead()){ 274 %%2 275 } 276 if(f.canWrite()){ 277 %%3 278 } 279 280 11.写入属性 281 //import java.io.*; 282 File filereadonly=new File(%%1); 283 try { 284 boolean %%2=filereadonly.setReadOnly(); 285 } 286 catch (IOException e) { 287 System.err.println("拒绝写访问:"+e.printStackTrace()); 288 } 289 290 12.枚举一个文件夹中的所有文件 291 /* 292 import java.io.*; 293 import java.util.*; 294 */ 295 LinkedList<String> folderList = new LinkedList<String>(); 296 folderList.add(%%1); 297 while (folderList.size() > 0) { 298 File file = new File((String)folderList.poll()); 299 File[] files = file.listFiles(); 300 List<File> fileList = new ArrayList<File>(); 301 for (int i = 0; i < files.length; i++) { 302 if (files[i].isDirectory()) 303 folderList.add(files[i].getPath()); 304 else 305 fileList.add(files[i]); 306 } 307 for (File f : fileList) { 308 %%2=f.getAbsoluteFile(); 309 %%3 310 } 311 } 312 313 13.复制文件夹 314 /* 315 import java.io.*; 316 import java.util.*; 317 */ 318 LinkedList<String> folderList = new LinkedList<String>(); 319 folderList.add(%%1); 320 LinkedList<String> folderList2 = new LinkedList<String>(); 321 folderList2.add(%%2+ %%1.substring(%%1.lastIndexOf("\"))); 322 while (folderList.size() > 0) { 323 (new File(folderList2.peek())).mkdirs(); // 如果文件夹不存在 则建立新文件夹 324 File folders = new File(folderList.peek()); 325 String[] file = folders.list(); 326 File temp = null; 327 try { 328 for (int i = 0; i < file.length; i++) { 329 if (folderList.peek().endsWith(File.separator)) 330 temp = new File(folderList.peek() + File.separator 331 + file[i]); 332 else 333 temp = new File(folderList.peek() + File.separator 334 + file[i]); 335 if (temp.isFile()) { 336 FileInputStream input = new FileInputStream(temp); 337 FileOutputStream output = new FileOutputStream(new File( 338 folderList2.peek() ,temp.getName().toString())); 339 byte[] b = new byte[10240]; 340 int len; 341 while ((len = input.read(b)) != -1) 342 output.write(b, 0, len); 343 output.flush(); 344 output.close(); 345 input.close(); 346 } 347 else if (temp.isDirectory()) {// 如果是子文件夹 348 for (File f : temp.listFiles()) { 349 if (f.isDirectory()) { 350 folderList.add(f.getPath()); 351 folderList2.add(folderList2.peek() 352 + File.separator + f.getName()); 353 } 354 else if(f.isFile()) { 355 FileInputStream input = new FileInputStream(f); 356 FileOutputStream output = new FileOutputStream(folderList2.peek()+File.separator+temp.getName()+File.separator+ f.getName()); 357 byte[] b = new byte[10240]; 358 int len; 359 while ((len = input.read(b)) != -1) 360 output.write(b, 0, len); 361 output.flush(); 362 output.close(); 363 input.close(); 364 } 365 } 366 } 367 } 368 } catch (IOException e) { 369 System.err.println("复制整个文件夹内容操作出错"); 370 } 371 folderList.removeFirst(); 372 folderList2.removeFirst(); 373 } 374 375 14.复制一个目录下所有的文件夹到另一个文件夹下 376 /* 377 import java.io.*; 378 import java.util.*; 379 */ 380 File copyfolders=new File(%%1); 381 File[] copyfoldersList=copyfolders.listFiles(); 382 for(int k=0;k<copyfoldersList.length;k++){ 383 if(copyfoldersList[k].isDirectory()){ 384 List<String>folderList=new ArrayList<String>(); 385 folderList.add(copyfoldersList[k].getPath()); 386 List<String>folderList2=new ArrayList<String>(); 387 folderList2.add(%%2+"/"+copyfoldersList[k].getName()); 388 for(int j=0;j<folderList.size();j++){ 389 (new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹 390 File folders=new File(folderList.get(j)); 391 String[] file=folders.list(); 392 File temp=null; 393 try { 394 for (int i = 0; i < file.length; i++) { 395 if(folderList.get(j).endsWith(File.separator)) 396 temp=new File(folderList.get(j),file[i]); 397 else 398 temp=new File(folderList.get(j),file[i]); 399 FileInputStream input = new FileInputStream(temp); 400 if(temp.isFile()){ 401 FileOutputStream output = new FileOutputStream(new File(folderList2.get(j) ,temp.getName()).toString())); 402 byte[] b = new byte[10240]; 403 while ( (int len = input.read(b)) != -1) 404 output.write(b, 0, len); 405 output.flush(); 406 output.close(); 407 input.close(); 408 } 409 else if(temp.isDirectory()){//如果是子文件夹 410 for (File f : temp.listFiles()) { 411 if (f.isDirectory()) { 412 folderList.add(f.getPath()); 413 folderList2.add(folderList2.peek() 414 + File.separator + f.getName()); 415 } 416 else if(f.isFile()) { 417 FileInputStream input = new FileInputStream(f); 418 FileOutputStream output = new FileOutputStream(folderList2.peek()+File.separator+temp.getName()+File.separator+ f.getName()); 419 byte[] b = new byte[10240]; 420 int len; 421 while ((len = input.read(b)) != -1) { 422 output.write(b, 0, len); 423 } 424 output.flush(); 425 output.close(); 426 input.close(); 427 } 428 } 429 } 430 } 431 } 432 } 433 catch (IOException e) { 434 System.err.println("复制整个文件夹内容操作出错"); 435 } 436 } 437 } 438 } 439 440 15.移动文件夹 441 /* 442 import java.io.*; 443 import java.util.*; 444 */ 445 LinkedList<String> folderList = new LinkedList<String>(); 446 folderList.add(%%1); 447 LinkedList<String> folderList2 = new LinkedList<String>(); 448 folderList2.add(%%2 + %%1.substring(%%1.lastIndexOf("\"))); 449 while (folderList.size() > 0) { 450 (new File(folderList2.peek())).mkdirs(); // 如果文件夹不存在 则建立新文件夹 451 File folders = new File(folderList.peek()); 452 String[] file = folders.list(); 453 File temp = null; 454 try { 455 for (int i = 0; i < file.length; i++) { 456 if (folderList.peek().endsWith(File.separator)) { 457 temp = new File(folderList.peek() , file[i]); 458 } else { 459 temp = new File(folderList.peek() ,file[i]); 460 } 461 if (temp.isFile()) { 462 FileInputStream input = new FileInputStream(temp); 463 FileOutputStream output = new FileOutputStream( 464 folderList2.peek() + File.separator 465 + (temp.getName()).toString()); 466 byte[] b = new byte[10240]; 467 while ((int len = input.read(b)) != -1) 468 output.write(b, 0, len); 469 output.flush(); 470 output.close(); 471 input.close(); 472 if (!temp.delete()) 473 //删除单个文件操作出错 474 } 475 else if (temp.isDirectory()) {// 如果是子文件夹 476 for (File f : temp.listFiles()) { 477 if (f.isDirectory()) { 478 folderList.add(f.getPath()); 479 folderList2.add(folderList2.peek() 480 + File.separator + f.getName()); 481 } 482 else if (f.isFile()) { 483 FileInputStream input = new FileInputStream(f); 484 FileOutputStream output = new FileOutputStream(folderList2.peek()+File.separator+temp.getName()+File.separator+ f.getName()); 485 byte[] b = new byte[10240]; 486 while ((int len = input.read(b)) != -1) 487 output.write(b, 0, len); 488 output.flush(); 489 output.close(); 490 input.close(); 491 if (!temp.delete()) 492 //删除单个文件操作出错 493 } 494 } 495 } 496 } 497 } catch (IOException e) { 498 //复制整个文件夹内容操作出错 499 e.printStackTrace(); 500 } 501 folderList.removeFirst(); 502 folderList2.removeFirst(); 503 504 } 505 File f = new File(%%1); 506 if (!f.delete()) { 507 for (File file : f.listFiles()) { 508 if (file.list().length == 0) 509 file.delete(); 510 } 511 } 512 513 16.移动一个目录下所有的文件夹到另一个目录下 514 /* 515 import java.io.*; 516 import java.util.*; 517 */ 518 File movefolders=new File(%%1); 519 File[] movefoldersList=movefolders.listFiles(); 520 for(int k=0;k<movefoldersList.length;k++){ 521 if(movefoldersList[k].isDirectory()){ 522 List<String>folderList=new ArrayList<String>(); 523 folderList.add(movefoldersList[k].getPath()); 524 List<String>folderList2=new ArrayList<String>(); 525 folderList2.add(%%2+File.separator+movefoldersList[k].getName()); 526 for(int j=0;j<folderList.size();j++){ 527 (new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹 528 File folders=new File(folderList.get(j)); 529 String[] file=folders.list(); 530 File temp=null; 531 try { 532 for (int i = 0; i < file.length; i++) { 533 if(folderList.get(j).endsWith(File.separator)) 534 temp=new File(folderList.get(j),file[i]); 535 else 536 temp=new File(folderList.get(j),file[i]); 537 FileInputStream input = new FileInputStream(temp); 538 if(temp.isFile()){ 539 FileInputStream input = new FileInputStream(temp); 540 FileOutputStream output = new FileOutputStream(new File(folderList2.get(j),temp.getName().toString())); 541 byte[] b = new byte[10240]; 542 while ( (int len = input.read(b)) != -1) 543 output.write(b, 0, len); 544 output.flush(); 545 output.close(); 546 input.close(); 547 temp.delete(); 548 } 549 else if(temp.isDirectory()){//如果是子文件夹 550 for (File f : temp.listFiles()) { 551 if (f.isDirectory()) { 552 folderList.add(f.getPath()); 553 folderList2.add(folderList2.peek() 554 + File.separator + f.getName()); 555 } 556 else if (f.isFile()) { 557 FileInputStream input = new FileInputStream(f); 558 FileOutputStream output = new FileOutputStream(folderList2.peek()+File.separator+temp.getName()+File.separator+ f.getName()); 559 byte[] b = new byte[10240]; 560 while ((int len = input.read(b)) != -1) 561 output.write(b, 0, len); 562 output.flush(); 563 output.close(); 564 input.close(); 565 if (!temp.delete()) 566 //删除单个文件操作出错 567 } 568 } 569 } 570 } 571 catch (IOException e) { 572 //复制整个文件夹内容操作出错 573 e.printStackTrace(); 574 } 575 } 576 movefoldersList[k].delete(); 577 } 578 } 579 580 17.以一个文件夹的框架在另一个目录创建文件夹和空文件 581 /* 582 import java.io.*; 583 import java.util.*; 584 */ 585 boolean b=false;//不创建空文件 586 List<String>folderList=new ArrayList<String>(); 587 folderList.add(%%1); 588 List<String>folderList2=new ArrayList<String>(); 589 folderList2.add(%%2); 590 for(int j=0;j<folderList.size();j++){ 591 (new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹 592 File folders=new File(folderList.get(j)); 593 String[] file=folders.list(); 594 File temp=null; 595 try { 596 for (int i = 0; i < file.length; i++) { 597 if(folderList.get(j).endsWith(File.separator)) 598 temp=new File(folderList.get(j),file[i]); 599 else 600 temp=new File(folderList.get(j),file[i]); 601 if(temp.isFile() && b) 602 temp.createNewFile(); 603 else if(temp.isDirectory()){//如果是子文件夹 604 folderList.add(folderList.get(j)+File.separator+file[i]); 605 folderList2.add(folderList2.get(j)+File.separator+file[i]); 606 } 607 } 608 } 609 catch (IOException e) { 610 //复制整个文件夹内容操作出错 611 e.printStackTrace(); 612 } 613 } 614 615 18.复制文件 616 //import java.io.*; 617 File oldfile = new File(%%1); 618 try { 619 if (oldfile.exists()) { //文件存在时 620 FileInputStream inStream = new FileInputStream(oldfile); //读入原文件 621 FileOutputStream fs = new FileOutputStream(new File(%%2,oldfile.getName())); 622 byte[] buffer = new byte[10240]; 623 int byteread; 624 while ( (byteread = inStream.read(buffer)) != -1) 625 fs.write(buffer, 0, byteread); 626 inStream.close(); 627 } 628 } 629 catch (IOException e) { 630 //复制单个文件操作出错 631 e.printStackTrace(); 632 } 633 634 19.复制一个目录下所有的文件到另一个目录 635 //import java.io.*; 636 File copyfiles=new File(%%1); 637 File targetfiles = new File(%%2); 638 if (!targetfiles.exists()) 639 targetfiles.mkdirs(); 640 File[] files=copyfiles.listFiles(); 641 for(int i=0;i<files.length;i++){ 642 if(files[i].isFile()){ 643 try { 644 InputStream inStream = new FileInputStream(files[i]); //读入原文件 645 FileOutputStream fs = new FileOutputStream(new File(%%2,files[i].getName())); 646 byte[] buffer = new byte[10240]; 647 int byteread; 648 while ( (byteread = inStream.read(buffer)) != -1) 649 fs.write(buffer, 0, byteread); 650 inStream.close(); 651 } catch (IOException e) { 652 //复制单个文件操作出错 653 e.printStackTrace(); 654 } 655 } 656 } 657 658 20.提取扩展名 659 String %%2=%%1.substring(%%1.lastIndexOf('.')); 660 661 21.提取文件名 662 String %%2=%%1.substring(%%1.lastIndexOf("\")+1); 663 664 22.提取文件路径 665 String %%2=%%1.substring(0,%%1.lastIndexOf("\")); 666 667 23.替换扩展名 668 //import java.io.*; 669 File replaceExt=new File(%%1); 670 replaceExt.renameTo(replaceExt.getName().split(".")[0]+"."+%%2); 671 672 24.追加路径 673 final String path=%%1.endsWith("\")?%%1:%%1+"\"; 674 %%3=path+%%2; 675 676 25.移动文件 677 //import java.io.*; 678 File oldfile = new File(%%1); 679 try { 680 if (oldfile.exists()) { //文件存在时 681 InputStream inStream = new FileInputStream(oldfile); //读入原文件 682 FileOutputStream fs = new FileOutputStream(new File(%%2,oldfile.getName())); 683 byte[] buffer = new byte[10240]; 684 int byteread; 685 while ( (byteread = inStream.read(buffer)) != -1) 686 fs.write(buffer, 0, byteread); 687 inStream.close(); 688 oldfile.delete(); 689 } 690 } 691 catch (IOException e) { 692 //复制单个文件操作出错 693 e.printStackTrace(); 694 } 695 696 26.移动一个目录下所有文件到另一个目录 697 //import java.io.*; 698 File movefile=new File(%%1); 699 File[] movefiles=movefile.listFiles(); 700 for(int i=0;i<movefiles.length;i++){ 701 if(movefiles[i].isFile()){ 702 File oldfile = new File(movefiles[i]); 703 try { 704 if (oldfile.exists()) { //文件存在时 705 InputStream inStream = new FileInputStream(oldfile); //读入原文件 706 FileOutputStream fs = new FileOutputStream(new File(%%2,oldfile.getName())); 707 byte[] buffer = new byte[10240]; 708 int byteread; 709 while ( (byteread = inStream.read(buffer)) != -1) 710 fs.write(buffer, 0, byteread); 711 inStream.close(); 712 oldfile.delete(); 713 } 714 } 715 catch (IOException e) { 716 //复制单个文件操作出错 717 e.printStackTrace(); 718 } 719 } 720 } 721 722 27.指定目录下搜索文件 723 //import java.io.*; 724 private static final String filter=%%1; //"*.*" 725 private static void doSearch(String path){ 726 File file = new File(path); 727 if(file.exists()) { 728 if(file.isDirectory()) { 729 File[] fileArray = file.listFiles(); 730 for(File f:fileArray) { 731 if(f.isDirectory()) { 732 doSearch(f.getPath()); 733 } else { 734 if(f.getName().indexOf(filter) >= 0) { 735 //f.getPath() 736 } 737 } 738 //f.getPath() 739 } 740 //"The numbers of files had been found:" + countFiles 741 } else { 742 //"Couldn't open the path!" 743 } 744 } else { 745 System.err.println("目录不存在"); 746 } 747 } 748 doSearch(%%1); 749 750 28.打开对话框 751 /* 752 import java.io.*; 753 import javax.swing.*; 754 */ 755 JFileChooser Jfc = new JFileChooser(); //建立选择档案对话方块盒 Jfc 756 Jfc.showDialog(null, %%1); 757 if (Jfc.getSelectedFile() != null) { 758 File %%2 = Jfc.getSelectedFile(); 759 } 760 761 29.文件分割 762 //import java.io.*; 763 try { 764 File f=new File(%%1); 765 FileInputStream fileInputStream = new FileInputStream(f); 766 byte[] buffer = new byte[fileInputStream.available()]; 767 FileInputStream.read(buffer); 768 fileInputStream.close(); 769 String strFileName = f.getName(); 770 FileOutputStream fileOutputStream = new FileOutputStream(new File(%%2+"\"+ strFileName + "1")); 771 fileOutputStream.write(buffer,0,buffer.length/2); 772 fileOutputStream.close(); 773 fileOutputStream = new FileOutputStream(new File(%%2+"\"+ strFileName + "2")); 774 fileOutputStream.write(buffer, buffer.length/2, buffer.length-buffer.length/2); 775 fileOutputStream.close(); 776 } catch (ArrayIndexOutOfBoundsException e) { 777 e.printStackTrace(); 778 } 779 catch(IOException e){ 780 e.printStackTrace(); 781 } 782 783 30.文件合并 784 //import java.io.*; 785 String strFileName = %%1.substring(%%1.LastIndexOf("\") + 1); 786 try { 787 FileInputStream fileInputStream1 = new FileInputStream(new File(%%2 + strFileName + "1")); 788 FileInputStream fileInputStream2 = new FileInputStream(new File(%%2 + strFileName + "2")); 789 byte[] buffer = new byte[fileInputStream1.available()+fileInputStream2.available()]; 790 FileInputStream.read(buffer, 0, fileInputStream1.available()); 791 FileInputStream2.read(buffer, fileInputStream1.available(), fileInputStream2.available()); 792 fileInputStream.close(); 793 fileInputStream2.close(); 794 FileOutputStream fileOutputStream = new FileOutputStream(new File(%%2+"\"+ strFileName)); 795 fileOutputStream.write(buffer,0,buffer.length); 796 fileOutputStream.close(); 797 } 798 catch(IOException e){ 799 e.printStackTrace(); 800 } 801 802 31.文件简单加密 803 /* 804 import java.io.*; 805 import javax.swing.*; 806 private static final String CharSet = "0123456789ABCDEF"; 807 */ 808 JFileChooser jfc = new JFileChooser(); 809 JFileChooser jfc2 = new JFileChooser(); 810 jfc.showDialog(null, "请选择要加密编码的文件"); 811 jfc2.showDialog(null, "请选择要输出的文件名"); 812 if (jfc.getSelectedFile() != null && jfc2.getSelectedFile() != null) { 813 File oldfile = jfc.getSelectedFile(); 814 FileInputStream inStream = null; 815 FileWriter fw = null; 816 try { 817 if (oldfile.exists()) { 818 inStream = new FileInputStream(oldfile); 819 fw = new FileWriter(jfc2.getSelectedFile()); 820 byte[] sRead = new byte[10240]; 821 int byteread; 822 while ((byteread = inStream.read(sRead)) != -1) { 823 StringBuilder smi = new StringBuilder(byteread * 2); 824 int ka = 3, kb = 5, kc = 2, kd = 7, js = 0; 825 if (byteread % 2 != 0) 826 js = 1; 827 for (int i = 0; i < byteread - 1; i += 2) { 828 char c1 = (char) sRead[i]; 829 char c2 = (char) sRead[i + 1]; 830 int tmp = ka * c1 + kc * c2; 831 while (tmp < 0) 832 tmp += 1024; 833 byte s1 = (byte) (tmp % 1024); 834 int js1 = (int) s1 >> 4 & 0xf; 835 smi.append(CharSet.substring(js1, js1 + 1)); 836 int ks1 = s1 & 0xf; 837 smi.append(CharSet.substring(ks1, ks1 + 1)); 838 tmp = kb * c1 + kd * c2; 839 while (tmp < 0) 840 tmp += 1024; 841 byte s2 = (byte) (tmp % 1024); 842 int js2 = (int) s2 >> 4 & 0xf; 843 smi.append(CharSet.substring(js2, js2 + 1)); 844 int ks2 = s2 & 0xf; 845 smi.append(CharSet.substring(ks2, ks2 + 1)); 846 } 847 if (js == 1) { 848 byte s3 = (byte) ((sRead[byteread - 1] - 4) % 1024); 849 int js3 = (int) s3 >> 4 & 0xf; 850 smi.append(CharSet.substring(js3, js3 + 1)); 851 int ks3 = (int) s3 & 0xf; 852 smi.append(CharSet.substring(ks3, ks3 + 1)); 853 } 854 fw.write(smi.toString()); 855 } 856 fw.flush(); 857 } 858 } catch (IOException e) { 859 e.printStackTrace(); 860 } finally { 861 try { 862 fw.close(); 863 inStream.close(); 864 } catch (IOException e) { 865 e.printStackTrace(); 866 } 867 } 868 } 869 870 32.文件简单解密 871 /* 872 import java.io.*; 873 import javax.swing.*; 874 private static final String CharSet = "0123456789ABCDEF"; 875 */ 876 private static int niyuan(int m, int n) { 877 int a, b, c, d, t, yu = 0, shang, mod; 878 a = m; 879 b = n; 880 mod = a; 881 c = 0; 882 d = 1; 883 while (b < 0) 884 b += a; 885 if (a % b == 0 || b % 2 == 0) 886 return 0; 887 while (b != 1) { 888 t = a % b; 889 shang = a / b; 890 a = b; 891 b = t; 892 yu = c - shang * d; 893 c = d; 894 d = yu; 895 } 896 if (yu < 0) 897 yu += mod; 898 return yu; 899 } 900 JFileChooser jfc = new JFileChooser(); 901 JFileChooser jfc2 = new JFileChooser(); 902 jfc.showDialog(null, "请选择要解码解密的文件"); 903 jfc2.showDialog(null, "请选择要输出的文件名"); 904 if (jfc.getSelectedFile() != null && jfc2.getSelectedFile() != null) { 905 FileOutputStream fw = null; 906 try { 907 FileInputStream fis = new FileInputStream(jfc.getSelectedFile()); 908 fw = new FileOutputStream(jfc2 909 .getSelectedFile()); 910 byte[] buffer = new byte[20480]; 911 int ka = 3, kb = 5, kc = 2, kd = 7, js = 0, tmp; 912 int aany, ddny; 913 int r00 = ka * kc * kd; 914 int r01 = -ka * kb * kc; 915 int r10 = -kb * kc * kc; 916 int r11 = ka * kb * kc; 917 int x00 = ka * ka * kc * kd - ka * kb * kc * kc; 918 int x11 = ka * kb * kc * kd - kb * kb * kc * kc; 919 while (x00 % 2 == 0) { 920 x00 /= 2; 921 r00 /= 2; 922 r01 /= 2; 923 } 924 while (x11 % 2 == 0) { 925 x11 /= 2; 926 r10 /= 2; 927 r11 /= 2; 928 } 929 aany = x00; 930 ddny = x11; 931 if (niyuan(1024, aany) != 0 && niyuan(1024, ddny) != 0) { 932 int kn00 = r00 * niyuan(1024, x00); 933 int kn01 = r01 * niyuan(1024, x00); 934 int kn10 = r10 * niyuan(1024, x11); 935 int kn11 = r11 * niyuan(1024, x11); 936 ka = kn00; 937 kb = kn01; 938 kc = kn10; 939 kd = kn11; 940 } else { 941 JOptionPane.showMessageDialog(null, "无逆矩阵!"); 942 System.exit(0); 943 } 944 while (ka < 0) 945 ka += 1024; 946 while (kb < 0) 947 kb += 1024; 948 while (kc < 0) 949 kc += 1024; 950 while (kd < 0) 951 kd += 1024; 952 ka %= 1024; 953 kb %= 1024; 954 kc %= 1024; 955 kd %= 1024; 956 try { 957 int byteread; 958 while ((byteread = fis.read(buffer)) != -1) { 959 int nLen = byteread / 2; 960 byte[] sming = new byte[nLen]; 961 String chs=new String(buffer,"US-ASCII"); 962 for (int i = 0; i < nLen; i++) { 963 byte bTmp; 964 if (byteread < 2) 965 bTmp = -1; 966 bTmp = (byte) (CharSet.indexOf(chs.substring(i * 2,i * 2+1)) * 16 + CharSet 967 .indexOf(chs.substring(i * 2 + 1,i * 2 + 2))); 968 sming[i] = bTmp; 969 } 970 if (nLen % 2 != 0) 971 js = 1; 972 for (int i = 0; i < nLen - 1; i += 2) { 973 char c1 = (char) sming[i]; 974 char c2 = (char) sming[i + 1]; 975 tmp = ka * c1 + kc * c2; 976 while (tmp < 0) 977 tmp += 1024; 978 char s1 = (char) (tmp % 1024); 979 fw.write(s1); 980 tmp = kb * c1 + kd * c2; 981 while (tmp < 0) 982 tmp += 1024; 983 char s2 = (char) (tmp % 1024); 984 fw.write(s2); 985 } 986 if (js == 1) { 987 char c3 = (char) ((sming[nLen - 1] - 4) % 1024); 988 fw.write(c3); 989 } 990 } 991 fw.flush(); 992 } catch (IOException e) { 993 e.printStackTrace(); 994 } finally { 995 try { 996 fis.close(); 997 fw.close(); 998 } catch (IOException e) { 999 e.printStackTrace(); 1000 } 1001 } 1002 } catch (FileNotFoundException e1) { 1003 // TODO Auto-generated catch block 1004 e1.printStackTrace(); 1005 } 1006 } 1007 1008 33.读取ini文件属性 1009 /* 1010 import java.io.*; 1011 import java.util.*; 1012 import java.util.regex.*; 1013 private static HashMap configMap=null; 1014 private static FileReader fileReader = null; 1015 */ 1016 private static boolean readIni() { 1017 if (configMap == null) { 1018 configMap = new HashMap<String, ArrayList>(); 1019 String strLine = null; 1020 String currentNode = null; 1021 String previousNode = null; 1022 ArrayList<Properties> vec = new ArrayList<Properties>(); 1023 int row = 0; 1024 BufferedReader bufferedReader = new BufferedReader(fileReader); 1025 try { 1026 while ((strLine = bufferedReader.readLine()) != null) { 1027 String oneLine = strLine.trim(); 1028 if (oneLine.length() >= 1) { 1029 Pattern p = Pattern.compile("\[\s*.*\s*\]"); 1030 int nodelen = oneLine.split("[;]").length; 1031 String[] strArray1 = new String[4]; 1032 if (nodelen == 1) { 1033 oneLine = oneLine.split("[;]")[0].trim(); 1034 } else if (nodelen == 2) { 1035 strArray1[3] = oneLine.split("[;]")[1].trim(); 1036 oneLine = oneLine.split("[;]")[0].trim(); 1037 } 1038 Matcher m = p.matcher(oneLine); 1039 if (m.matches()) { 1040 strArray1[0] = "@Node"; 1041 strArray1[1] = oneLine; 1042 strArray1[2] = ""; 1043 } else { 1044 int keylen = oneLine.split("=").length; 1045 if (keylen == 1) { 1046 strArray1[0] = "@Key"; 1047 strArray1[1] = oneLine.split("=")[0]; 1048 strArray1[2] = ""; 1049 } else if (keylen == 2) { 1050 strArray1[0] = "@Key"; 1051 strArray1[1] = oneLine.split("=")[0]; 1052 strArray1[2] = oneLine.split("=")[1]; 1053 } else { 1054 strArray1[0] = "@ElementError"; 1055 strArray1[1] = ""; 1056 strArray1[2] = ""; 1057 strArray1[3] = ""; 1058 } 1059 } 1060 if (strArray1[0].equals("@Node")) { 1061 previousNode = currentNode; 1062 currentNode = strArray1[1]; 1063 if (row > 0) { 1064 configMap.put(previousNode, (ArrayList)vec.clone()); 1065 vec.clear(); 1066 row = 0; 1067 } 1068 } else if (strArray1[0].equals("@Key") && row == 0) { 1069 Properties ht = new Properties(); 1070 ht.setProperty(strArray1[1], strArray1[2]); 1071 vec.add(ht); 1072 row++; 1073 } else if (strArray1[0].equals("@Key") && row > 0) { 1074 Properties ht2 = new Properties(); 1075 ht2.put(strArray1[1], strArray1[2]); 1076 vec.add(ht2); 1077 row++; 1078 } 1079 } 1080 } 1081 configMap.put(currentNode, (ArrayList)vec.clone()); 1082 } catch (FileNotFoundException e) { 1083 configMap = null; 1084 e.printStackTrace(); 1085 return false; 1086 } catch (IOException e) { 1087 configMap = null; 1088 e.printStackTrace(); 1089 return false; 1090 } 1091 } 1092 return true; 1093 } 1094 try { 1095 fileReader = new FileReader(%%1); //"Setup.ini" 1096 } catch (FileNotFoundException e1) { 1097 e1.printStackTrace(); 1098 } 1099 if (readIni()) { 1100 ArrayList<Properties> li = null; 1101 li = (ArrayList<Properties>) configMap.get(%%2); //"[DataSource]" 1102 for (Properties pro : li) { 1103 if(pro.containsKey(%%3)) 1104 %%4=pro.getProperty(%%3); 1105 } 1106 } 1107 try { 1108 fileReader.close(); 1109 } catch (IOException e) { 1110 e.printStackTrace(); 1111 } 1112 1113 34.合并一个目录下所有的文件 1114 //import java.io.*; 1115 File combinefiles=new File(%%1); 1116 File[] files=combinefiles.listFiles(); 1117 FileOutputStream fs; 1118 try { 1119 fs=new FileOutputStream(new File(%%2)); 1120 } 1121 catch(IOException e){ 1122 e.printStackTrace(); 1123 } 1124 for(int i=0;i<files.length;i++){ 1125 if(files[i].isFile()){ 1126 try { 1127 FileInputStream inStream=new FileInputStream(files[i]); 1128 byte[] buffer = new byte[10240]; 1129 int byteread; 1130 while((byteread=inStream.read(buffer))!=-1) 1131 fs.write(buffer,0,byteread); 1132 inStream.close(); 1133 } 1134 catch(Exception e){ 1135 //复制文件出错 1136 e.printStackTrace(); 1137 } 1138 } 1139 } 1140 try { 1141 fs.close(); 1142 } 1143 catch(IOException e){ 1144 e.printStackTrace(); 1145 } 1146 1147 35.写入ini文件属性 1148 /* 1149 import java.io.*; 1150 import java.util.*; 1151 import java.util.regex.*; 1152 private static HashMap configMap=null; 1153 */ 1154 if (readIni()) { 1155 ArrayList<Properties> li = null; 1156 try { 1157 FileWriter fw = new FileWriter(%%1); 1158 li = (ArrayList<Properties>) configMap.get(%%2); //"[DataSource]" 1159 fw.write("%%2 "); 1160 for (Properties pro : li) { 1161 if (pro.containsKey(%%3)) //"ip" 1162 fw.write("%%3=" + %%6 + " "); 1163 } 1164 fw.flush(); 1165 fw.close(); 1166 } catch (IOException e) { 1167 e.printStackTrace(); 1168 } 1169 } 1170 1171 36.获得当前路径 1172 String %%1=getClass().getResource("/").getPath(); 1173 //String %%1=System.getProperty("user.dir"); 1174 1175 37.读取XML数据库 1176 /* 1177 import java.io.*; 1178 import javax.xml.parsers.*; 1179 import org.w3c.dom.*; 1180 private static Document document; 1181 private static Element node; 1182 */ 1183 File xml_file = new File(%%1); 1184 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 1185 try { 1186 DocumentBuilder builder = factory.newDocumentBuilder(); 1187 document = builder.parse(xml_file); 1188 } catch (Exception e) { 1189 e.printStackTrace(); 1190 } 1191 String subNodeTag = %%2; 1192 Element rootNode = document.getDocumentElement(); 1193 //%%2="Product" //%%4="id" //%%6="port" 1194 //%%3="Name" //%%5="001" 1195 NodeList nlist = rootNode.getElementsByTagName(subNodeTag); 1196 int len = nlist.getLength(); 1197 for (int i = 0; i < len; i++) { 1198 node = nlist.item(i); 1199 String getNodeAttrValue = null; 1200 NamedNodeMap attrList = node.getAttributes(); 1201 for (int j = 0; j < attrList.getLength(); j++) { 1202 if (attrList.item(j).getNodeName().equals(%%4)) { 1203 getNodeAttrValue = attrList.item(j).getNodeValue(); 1204 break; 1205 } 1206 } 1207 if (getNodeAttrValue.equals(%%5)) { 1208 nlist = node.getChildNodes(); 1209 String %%9=((Element) node).getElementsByTagName(%%3).item(0) 1210 .getFirstChild().getNodeValue(); 1211 break; 1212 } 1213 } 1214 1215 38.写入XML数据库 1216 /* 1217 import java.io.*; 1218 import javax.xml.parsers.*; 1219 import org.w3c.dom.*; 1220 import javax.xml.transform.*; 1221 import javax.xml.transform.dom.*; 1222 import javax.xml.transform.stream.*; 1223 private Document document; 1224 private Element node; 1225 */ 1226 File xml_file = new File(%%1); 1227 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 1228 try { 1229 DocumentBuilder builder = factory.newDocumentBuilder(); 1230 document = builder.parse(xml_file); 1231 } catch (Exception e) { 1232 e.printStackTrace(); 1233 } 1234 String subNodeTag = %%2; 1235 Element rootNode = document.getDocumentElement(); 1236 // %%2="Product" //%%4="pid" //%%6="author" 1237 // %%3="Name" //%%5="price" 1238 NodeList nlist = rootNode.getElementsByTagName(subNodeTag); 1239 String ss = null; 1240 int len = nlist.getLength(); 1241 for (int i = 0; i < len; i++) { 1242 node = (Element) nlist.item(i); 1243 //node.setAttribute(%%4, "0"+String.valueOf(i)); //ID格式化 1244 String getNodeAttrValue = null; 1245 NamedNodeMap attrList = node.getAttributes(); 1246 for (int j = 0; j < attrList.getLength(); j++) { 1247 if (attrList.item(j).getNodeName().equals(%%4)) { 1248 getNodeAttrValue = attrList.item(j).getNodeValue(); 1249 break; 1250 } 1251 } 1252 if (getNodeAttrValue.equals("001")) { 1253 nlist = node.getChildNodes(); 1254 ss = ((Element) node).getElementsByTagName(%%3).item(0) 1255 .getFirstChild().getNodeValue(); 1256 ss = ((Element) node).getElementsByTagName(%%6).item(0) 1257 .getFirstChild().getNodeValue(); 1258 ss = ((Element) node).getElementsByTagName(%%5).item(0) 1259 .getFirstChild().getNodeValue(); 1260 ((Element) node).getElementsByTagName(%%3).item(0) 1261 .getFirstChild().setTextContent(%%7); 1262 ((Element) node).getElementsByTagName(%%6).item(0) 1263 .getFirstChild().setTextContent(%%8); 1264 ((Element) node).getElementsByTagName(%%5).item(0) 1265 .getFirstChild().setTextContent(%%9); 1266 break; 1267 } 1268 } 1269 if (ss == null) { 1270 node = document.createElement(%%2); 1271 node.setAttribute(%%4, String.valueOf(nlist.getLength() + 1)); 1272 node.appendChild(document.createTextNode(" ")); 1273 Element server = document.createElement(%%3); 1274 server.appendChild(document.createTextNode(%%7)); 1275 node.appendChild(server); 1276 Element ipNode = document.createElement(%%6); 1277 ipNode.appendChild(document.createTextNode(%%8)); 1278 node.appendChild(ipNode); 1279 node.appendChild(document.createTextNode(" ")); 1280 Element port = document.createElement(%%5); 1281 port.appendChild(document.createTextNode(%%9)); 1282 node.appendChild(port); 1283 node.appendChild(document.createTextNode(" ")); 1284 rootNode.appendChild(node); 1285 } 1286 TransformerFactory tFactory = TransformerFactory.newInstance(); 1287 Transformer transformer = null; 1288 try { 1289 transformer = tFactory.newTransformer(); 1290 DOMSource source = new DOMSource(document); 1291 StreamResult result = new StreamResult(xml_file); 1292 transformer.transform(source, result); 1293 } catch (IOException e) { 1294 e.printStackTrace(); 1295 } 1296 1297 39.ZIP压缩文件 1298 /* 1299 import java.io.*; 1300 import java.util.zip.*; 1301 */ 1302 //创建文件输入流对象 1303 FileInputStream fis=new FileInputStream(%%1); 1304 //创建文件输出流对象 1305 FileOutputStream fos=new FileOutputStream(%%2); 1306 //创建ZIP数据输出流对象 1307 ZipOutputStream zipOut=new ZipOutputStream(fos); 1308 //创建指向压缩原始文件的入口 1309 ZipEntry entry=new ZipEntry(args[0]); 1310 try { 1311 zipOut.putNextEntry(entry); 1312 //向压缩文件中输出数据 1313 int nNumber; 1314 byte[] buffer=new byte[1024]; 1315 while((nNumber=fis.read(buffer))!=-1) 1316 zipOut.write(buffer,0,nNumber); 1317 //关闭创建的流对象 1318 zipOut.close(); 1319 fos.close(); 1320 fis.close(); 1321 } 1322 catch(IOException e) 1323 { 1324 e.printStackTrace(); 1325 } 1326 1327 40.ZIP解压缩 1328 /* 1329 import java.io.*; 1330 import java.util.zip.*; 1331 */ 1332 //创建文件输入流对象实例 1333 FileInputStream fis=new FileInputStream(%%1); 1334 //创建ZIP压缩格式输入流对象实例 1335 ZipInputStream zipin=new ZipInputStream(fis); 1336 //创建文件输出流对象实例 1337 FileOutputStream fos=new FileOutputStream(%%2); 1338 //获取Entry对象实例 1339 ZipEntry entry=zipin.getNextEntry(); 1340 byte[] buffer=new byte[1024]; 1341 int nNumber; 1342 try{ 1343 while((nNumber=zipin.read(buffer,0,buffer.length))!=-1) 1344 fos.write(buffer,0,nNumber); 1345 //关闭文件流对象 1346 zipin.close(); 1347 fos.close(); 1348 fis.close(); 1349 } 1350 catch(IOException e) { 1351 e.printStackTrace(); 1352 } 1353 1354 41.获得应用程序完整路径 1355 String %%1=System.getProperty("user.dir"); 1356 1357 42.递归删除目录中的文件 1358 /* 1359 import java.io.*; 1360 import java.util.*; 1361 */ 1362 ArrayList<String> folderList = new ArrayList<String>(); 1363 folderList.add(%%1); 1364 for (int j = 0; j < folderList.size(); j++) { 1365 File file = new File(folderList.get(j)); 1366 File[] files = file.listFiles(); 1367 ArrayList<File> fileList = new ArrayList<File>(); 1368 for (int i = 0; i < files.length; i++) { 1369 if (files[i].isDirectory()) { 1370 folderList.add(files[i].getPath()); 1371 } else { 1372 fileList.add(files[i]); 1373 } 1374 } 1375 for (File f : fileList) { 1376 f.delete(); 1377 } 1378 } 1379 1380 43.ZIP压缩文件夹 1381 /* 1382 import java.io.*; 1383 import java.util.*; 1384 import java.util.zip.*; 1385 */ 1386 public static String zipFileProcess(ArrayList outputZipFileNameList, String outputZipNameAndPath) { 1387 ArrayList fileNames = new ArrayList(); 1388 ArrayList files = new ArrayList(); 1389 FileOutputStream fileOut = null; 1390 ZipOutputStream outputStream = null; 1391 FileInputStream fileIn = null; 1392 StringBuffer sb = new StringBuffer(outputZipNameAndPath); 1393 // FileInputStream fileIn =null; 1394 try { 1395 if (outputZipNameAndPath.indexOf(".zip") != -1) { 1396 outputZipNameAndPath = outputZipNameAndPath; 1397 } else { 1398 sb.append(".zip"); 1399 outputZipNameAndPath = sb.toString(); 1400 } 1401 fileOut = new FileOutputStream(outputZipNameAndPath); 1402 outputStream = new ZipOutputStream(fileOut); 1403 int outputZipFileNameListSize = 0; 1404 if (outputZipFileNameList != null) { 1405 outputZipFileNameListSize = outputZipFileNameList.size(); 1406 } 1407 for (int i = 0; i < outputZipFileNameListSize; i++) { 1408 File rootFile = new File(outputZipFileNameList.get(i).toString()); 1409 listFile(rootFile, fileNames, files, ""); 1410 } 1411 for (int loop = 0; loop < files.size(); loop++) { 1412 fileIn = new FileInputStream((File) files.get(loop)); 1413 outputStream.putNextEntry(new ZipEntry((String) fileNames.get(loop))); 1414 byte[] buffer = new byte[1024]; 1415 while (fileIn.read(buffer) != -1) { 1416 outputStream.write(buffer); 1417 } 1418 outputStream.closeEntry(); 1419 fileIn.close(); 1420 } 1421 return outputZipNameAndPath; 1422 } catch (IOException ioe) { 1423 return null; 1424 } finally { 1425 if (outputStream != null) { 1426 try { 1427 outputStream.close(); 1428 } catch (IOException e) { 1429 } 1430 } 1431 if (fileIn != null) { 1432 try { 1433 fileIn.close(); 1434 } catch (IOException e) { 1435 } 1436 } 1437 } 1438 } 1439 private static void listFile(File parentFile, List nameList, List fileList, String directoryName) { 1440 if (parentFile.isDirectory()) { 1441 File[] files = parentFile.listFiles(); 1442 for (int loop = 0; loop < files.length; loop++) { 1443 listFile(files[loop], nameList, fileList, directoryName + parentFile.getName() + "/"); 1444 } 1445 } else { 1446 fileList.add(parentFile); 1447 nameList.add(directoryName + parentFile.getName()); 1448 } 1449 } 1450 String savePath=%%1; 1451 ArrayList<String> outputZipFileName=new ArrayList<String>(); 1452 outputZipFileName.add(%%2); 1453 zipFileProcess(outputZipFileName,savePath); 1454 1455 44.IDEA加密算法 1456 private byte[] bytekey; 1457 public byte[] getKey(String key){ 1458 int len1 =key.length(); 1459 if (len1>=16) { 1460 key=key.substring(0, 16); 1461 } else { 1462 for (int i=0;i<16-len1;i++){ 1463 key=key.concat("0"); 1464 } 1465 } 1466 bytekey=key.getBytes(); 1467 return bytekey; 1468 } 1469 /** 1470 * 加密String明文输入,String密文输出 1471 * @param strMing 1472 * @return 1473 */ 1474 public String getEncString(String strMing) { 1475 byte[] byteMi = null; 1476 byte[] byteMing = null; 1477 String strMi = ""; 1478 try { 1479 return byte2hex(IdeaEncrypt(bytekey,strMing.getBytes(),true) ); 1480 } 1481 catch(Exception e){ 1482 e.printStackTrace(); 1483 } 1484 finally { 1485 byteMing = null; 1486 byteMi = null; 1487 } 1488 return strMi; 1489 } 1490 /** 1491 * 解密 以String密文输入,String明文输出 1492 * @param strMi 1493 * @return 1494 */ 1495 public String getDesString(String strMi) { 1496 byte[] byteMing = null; 1497 byte[] byteMi = null; 1498 String strMing = ""; 1499 try { 1500 String tmp= new String(IdeaEncrypt(bytekey,hex2byte(strMi.getBytes()),false )); 1501 int len1=tmp.length(); 1502 return tmp.substring(0, len1-6); 1503 } 1504 catch(Exception e) { 1505 e.printStackTrace(); 1506 } 1507 finally { 1508 byteMing = null; 1509 byteMi = null; 1510 } 1511 return strMing; 1512 } 1513 private byte[] Encrypt(byte[] bytekey, byte[] inputBytes, boolean flag) { 1514 byte[] encryptCode = new byte[8]; 1515 // 分解子密钥 1516 int[] key = get_subkey(flag, bytekey); 1517 // 进行加密操作 1518 encrypt(key, inputBytes, encryptCode); 1519 // 返回加密数据 1520 return encryptCode; 1521 } 1522 1523 private int bytesToInt(byte[] inBytes, int startPos) { 1524 return ((inBytes[startPos] << 8) & 0xff00) + 1525 (inBytes[startPos + 1] & 0xff); 1526 } 1527 1528 private void intToBytes(int inputInt, byte[] outBytes, int startPos) { 1529 outBytes[startPos] = (byte) (inputInt >>> 8); 1530 outBytes[startPos + 1] = (byte) inputInt; 1531 } 1532 1533 private int x_multiply_y(int x, int y) { 1534 if (x == 0) { 1535 x = 0x10001 - y; 1536 } else if (y == 0) { 1537 x = 0x10001 - x; 1538 } else { 1539 int tmp = x * y; 1540 y = tmp & 0xffff; 1541 x = tmp >>> 16; 1542 x = (y - x) + ((y < x) ? 1 : 0); 1543 } 1544 1545 return x & 0xffff; 1546 } 1547 1548 private void encrypt(int[] key, byte[] inbytes, byte[] outbytes) { 1549 int k = 0; 1550 int a = bytesToInt(inbytes, 0); 1551 int b = bytesToInt(inbytes, 2); 1552 int c = bytesToInt(inbytes, 4); 1553 int d = bytesToInt(inbytes, 6); 1554 1555 for (int i = 0; i < 8; i++) { 1556 a = x_multiply_y(a, key[k++]); 1557 b += key[k++]; 1558 b &= 0xffff; 1559 c += key[k++]; 1560 c &= 0xffff; 1561 d = x_multiply_y(d, key[k++]); 1562 1563 int tmp1 = b; 1564 int tmp2 = c; 1565 c ^= a; 1566 b ^= d; 1567 c = x_multiply_y(c, key[k++]); 1568 b += c; 1569 b &= 0xffff; 1570 b = x_multiply_y(b, key[k++]); 1571 c += b; 1572 c &= 0xffff; 1573 a ^= b; 1574 d ^= c; 1575 b ^= tmp2; 1576 c ^= tmp1; 1577 } 1578 1579 intToBytes(x_multiply_y(a, key[k++]), outbytes, 0); 1580 intToBytes(c + key[k++], outbytes, 2); 1581 intToBytes(b + key[k++], outbytes, 4); 1582 intToBytes(x_multiply_y(d, key[k]), outbytes, 6); 1583 } 1584 1585 private int[] encrypt_subkey(byte[] byteKey) { 1586 int[] key = new int[52]; 1587 1588 if (byteKey.length < 16) { 1589 byte[] tmpkey = new byte[16]; 1590 System.arraycopy(byteKey, 0, tmpkey, 1591 tmpkey.length - byteKey.length, byteKey.length); 1592 byteKey = tmpkey; 1593 } 1594 1595 for (int i = 0; i < 8; i++) { 1596 key[i] = bytesToInt(byteKey, i * 2); 1597 } 1598 1599 for (int j = 8; j < 52; j++) { 1600 if ((j & 0x7) < 6) { 1601 key[j] = (((key[j - 7] & 0x7f) << 9) | (key[j - 6] >> 7)) & 1602 0xffff; 1603 } else if ((j & 0x7) == 6) { 1604 key[j] = (((key[j - 7] & 0x7f) << 9) | (key[j - 14] >> 7)) & 1605 0xffff; 1606 } else { 1607 key[j] = (((key[j - 15] & 0x7f) << 9) | (key[j - 14] >> 7)) & 1608 0xffff; 1609 } 1610 } 1611 1612 return key; 1613 } 1614 1615 private int fun_a(int a) { 1616 if (a < 2) { 1617 return a; 1618 } 1619 1620 int b = 1; 1621 int c = 0x10001 / a; 1622 1623 for (int i = 0x10001 % a; i != 1;) { 1624 int d = a / i; 1625 a %= i; 1626 b = (b + (c * d)) & 0xffff; 1627 1628 if (a == 1) { 1629 return b; 1630 } 1631 d = i / a; 1632 i %= a; 1633 c = (c + (b * d)) & 0xffff; 1634 } 1635 1636 return (1 - c) & 0xffff; 1637 } 1638 1639 private int fun_b(int b) { 1640 return (0 - b) & 0xffff; 1641 } 1642 1643 private int[] uncrypt_subkey(int[] key) { 1644 int dec = 52; 1645 int asc = 0; 1646 int[] unkey = new int[52]; 1647 int aa = fun_a(key[asc++]); 1648 int bb = fun_b(key[asc++]); 1649 int cc = fun_b(key[asc++]); 1650 int dd = fun_a(key[asc++]); 1651 unkey[--dec] = dd; 1652 unkey[--dec] = cc; 1653 unkey[--dec] = bb; 1654 unkey[--dec] = aa; 1655 1656 for (int k1 = 1; k1 < 8; k1++) { 1657 aa = key[asc++]; 1658 bb = key[asc++]; 1659 unkey[--dec] = bb; 1660 unkey[--dec] = aa; 1661 aa = fun_a(key[asc++]); 1662 bb = fun_b(key[asc++]); 1663 cc = fun_b(key[asc++]); 1664 dd = fun_a(key[asc++]); 1665 unkey[--dec] = dd; 1666 unkey[--dec] = bb; 1667 unkey[--dec] = cc; 1668 unkey[--dec] = aa; 1669 } 1670 1671 aa = key[asc++]; 1672 bb = key[asc++]; 1673 unkey[--dec] = bb; 1674 unkey[--dec] = aa; 1675 aa = fun_a(key[asc++]); 1676 bb = fun_b(key[asc++]); 1677 cc = fun_b(key[asc++]); 1678 dd = fun_a(key[asc]); 1679 unkey[--dec] = dd; 1680 unkey[--dec] = cc; 1681 unkey[--dec] = bb; 1682 unkey[--dec] = aa; 1683 1684 return unkey; 1685 } 1686 1687 private int[] get_subkey(boolean flag, byte[] bytekey) { 1688 if (flag) { 1689 return encrypt_subkey(bytekey); 1690 } else { 1691 return uncrypt_subkey(encrypt_subkey(bytekey)); 1692 } 1693 } 1694 1695 private byte[] ByteDataFormat(byte[] data, int unit) { 1696 int len = data.length; 1697 int padlen = unit - (len % unit); 1698 int newlen = len + padlen; 1699 byte[] newdata = new byte[newlen]; 1700 System.arraycopy(data, 0, newdata, 0, len); 1701 1702 for (int i = len; i < newlen; i++) 1703 newdata[i] = (byte) padlen; 1704 1705 return newdata; 1706 } 1707 1708 public byte[] IdeaEncrypt(byte[] idea_key, byte[] idea_data, boolean flag) { 1709 byte[] format_key = ByteDataFormat(idea_key, 16); 1710 byte[] format_data = ByteDataFormat(idea_data, 8); 1711 1712 int datalen = format_data.length; 1713 int unitcount = datalen / 8; 1714 byte[] result_data = new byte[datalen]; 1715 1716 for (int i = 0; i < unitcount; i++) { 1717 byte[] tmpkey = new byte[16]; 1718 byte[] tmpdata = new byte[8]; 1719 System.arraycopy(format_key, 0, tmpkey, 0, 16); 1720 System.arraycopy(format_data, i * 8, tmpdata, 0, 8); 1721 1722 byte[] tmpresult = Encrypt(tmpkey, tmpdata, flag); 1723 System.arraycopy(tmpresult, 0, result_data, i * 8, 8); 1724 } 1725 1726 return result_data; 1727 } 1728 1729 /** 1730 * 二行制转字符串 1731 * @param b 1732 * @return 1733 */ 1734 public static String byte2hex(byte[] b) { //一个字节的数, 1735 // 转成16进制字符串 1736 String hs = ""; 1737 String stmp = ""; 1738 for (int n = 0; n < b.length; n++) { 1739 //整数转成十六进制表示 1740 stmp = (java.lang.Integer.toHexString(b[n] & 0XFF)); 1741 if (stmp.length() == 1) 1742 hs = hs + "0" + stmp; 1743 else 1744 hs = hs + stmp; 1745 } 1746 return hs.toUpperCase(); //转成大写 1747 } 1748 1749 public static byte[] hex2byte(byte[] b) { 1750 if((b.length%2)!=0) 1751 throw new IllegalArgumentException("长度不是偶数"); 1752 byte[] b2 = new byte[b.length/2]; 1753 for (int n = 0; n < b.length; n+=2) { 1754 String item = new String(b,n,2); 1755 // 两位一组,表示一个字节,把这样表示的16进制字符串,还原成一个进制字节 1756 b2[n/2] = (byte)Integer.parseInt(item,16); 1757 } 1758 1759 return b2; 1760 } 1761 1762 public static void main(String[] args) { 1763 1764 1765 IDEA idea = new IDEA(); 1766 1767 idea.getKey("aadd");//生成密匙 1768 1769 String strEnc = idea.getEncString("1234567890");//加密字符串,返回String的密文 1770 System.out.println(strEnc); 1771 1772 String strDes = idea.getDesString(strEnc);//把String 类型的密文解密 1773 System.out.println(strDes); 1774 1775 1776 // String key = "0000000000000000"; 1777 // String data = "11111111冯"; 1778 // byte[] bytekey = key.getBytes(); 1779 // byte[] bytedata = data.getBytes(); 1780 // 1781 // IDEA idea = new IDEA(); 1782 // byte[] encryptdata = idea.IdeaEncrypt(bytekey, bytedata, true); 1783 // byte[] decryptdata = idea.IdeaEncrypt(bytekey, encryptdata, false); 1784 // 1785 // System.out.println("--------------------------------"); 1786 // 1787 // for (int i = 0; i < bytedata.length; i++) { 1788 // System.out.print(" " + bytedata[i] + " "); 1789 // } 1790 // 1791 // System.out.println(""); 1792 // 1793 // for (int i = 0; i < encryptdata.length; i++) { 1794 // System.out.print(" " + encryptdata[i] + " "); 1795 // } 1796 // 1797 // System.out.println(""); 1798 // 1799 // for (int i = 0; i < decryptdata.length; i++) { 1800 // System.out.print(" " + decryptdata[i] + " "); 1801 // } 1802 1803 } 1804 1805 45.验证Schema 1806 /* 1807 import javax.xml.*; 1808 import javax.xml.transform.stream.*; 1809 import javax.xml.validation.*; 1810 import org.xml.sax.*; 1811 */ 1812 SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); 1813 StreamSource ss = new StreamSource(%%1); //"mySchema.xsd" 1814 try { 1815 Schema schema = factory.newSchema(ss); 1816 } catch (SAXException e) { 1817 e.printStackTrace(); 1818 } 1819 1820 46.Grep 1821 /* 1822 import java.util.regex.*; 1823 import java.io.*; 1824 */ 1825 throws Exception 1826 Pattern pattern = Pattern.compile(%%1); // 第一个参数为需要匹配的字符串 1827 Matcher matcher = pattern.matcher(""); 1828 String file = %%2; 1829 BufferedReader br = null; 1830 String line; 1831 try { 1832 br = new BufferedReader (new FileReader (file)); // 打开文件 1833 } catch (IOException e) { 1834 // 没有打开文件,则产生异常 1835 System.err.println ("Cannot read '" + file 1836 + "': " + e.getMessage()); 1837 } 1838 while ((line = br.readLine()) != null) { // 读入一行,直到文件结束 1839 matcher.reset (line); // 匹配字符串 1840 if (matcher.find()) { // 如果有匹配的字符串,则输出 1841 //line 1842 } 1843 } 1844 br.close(); // 关闭文件 1845 1846 47.直接创建多级目录 1847 //import java.io.*; 1848 File f=new File(%%1); 1849 f.mkdirs(); 1850 1851 48.批量重命名 1852 //import java.io.*; 1853 File target = new File("%%1"); 1854 String[] files = target.list(); 1855 File f = null; 1856 String filename = null; 1857 for (String file : files) { 1858 f = new File(target, file); 1859 filename = f.getName(); 1860 if (filename.substring(filename.lastIndexOf('.')).equalsIgnoreCase( 1861 "%%2")) { 1862 f.renameTo(new File(target.getAbsolutePath(), filename.replace( 1863 "%%2", "%%3"))); 1864 // 这里可以反复使用replace替换,当然也可以使用正则表达式来替换了 ".txt" ".bat" 1865 } 1866 } 1867 1868 49.文本查找替换 1869 //import java.nio.*; 1870 String s1=%%1; 1871 String s2=%%2; 1872 String s3=%%3; 1873 int pos=%%4; 1874 /*变量i和j分别表示主串和模式串中当前字符串的位置,k表示匹配次数*/ 1875 int i,j,k=0; 1876 i = pos; 1877 j = 0; 1878 //将s1转化成StringBuffer型进行操作 1879 repStr = new StringBuffer(s1); 1880 while(i<repStr.length()&&j<s2.length()) 1881 { 1882 if(repStr.charAt(i) == s2.charAt(j)) 1883 { 1884 ++i; ++j; 1885 if(j==s2.length()) 1886 { 1887 /*j=s2.length()表示字符串匹配成功,匹配次数加1,此外对主串进行字符串替换*/ 1888 k = k+1; 1889 repStr.replace(i-j,i,s3); 1890 //将j进行重新赋值开始新的比较 1891 j = 0; 1892 } 1893 } 1894 else {i = i-j+1; j = 0;} 1895 } 1896 return k; 1897 1898 50.文件关联 1899 //import java.io.*; 1900 try { 1901 Runtime.getRuntime().exec(%%1); //"assoc .txt =mynote" "assoc [.ext[=[filetype]]]" 1902 } catch (IOException e) { 1903 e.printStackTrace(); 1904 } 1905 1906 51.批量转换编码从GB2312到Unicode 1907 1908 1909 52.设置JDK环境变量 1910 @echo off 1911 IF EXIST %1injava.exe ( 1912 rem 如输入正确的 Java2SDK 安装目录,开始设置环境变量 1913 @setx JAVA_HOME %1 1914 @setx path %path%;%JAVA_HOME%in 1915 @setx classpath %classpath%;. 1916 @setx classpath %classpath%;%JAVA_HOME%lib ools.jar 1917 @setx classpath %classpath%;%JAVA_HOME%libdt.jar 1918 @setx classpath %classpath%;%JAVA_HOME%jrelib t.jar 1919 @echo on 1920 @echo Java 2 SDK 环境参数设置完毕,正常退出。 1921 ) ELSE ( 1922 IF "%1"=="" ( 1923 rem 如没有提供安装目录,提示之后退出 1924 @echo on 1925 @echo 没有提供 Java2SDK 的安装目录,不做任何设置,现在退出环境变量设置。 1926 ) ELSE ( 1927 rem 如果提供非空的安装目录但没有binjava.exe,则指定的目录为错误的目录 1928 @echo on 1929 @echo 非法的 Java2SDK 的安装目录,不做任何设置,现在退出环境变量设置。 1930 ) 1931 ) 1932 //http://sourceforge.net/projects/jregistrykey/ 1933 //import ca.beq.util.win32.registry.*; 1934 //import java.util.*; 1935 1.打开键 1936 RegistryKey r = new RegistryKey(RootKey.HKEY_LOCAL_MACHINE, "SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"); 1937 2.添加键 1938 RegistryKey r = new RegistryKey(RootKey.HKEY_CURRENT_USER, "Software\BEQ Technologies"); 1939 r.create(); 1940 9.写入字符串值 1941 RegistryKey r = new RegistryKey(RootKey.HKEY_CURRENT_USER, "Software\BEQ Technologies"); 1942 RegistryValue v = new RegistryValue("myVal", ValueType.REG_SZ, "data"); 1943 r.setValue(v); 1944 6.获取DWORD值 1945 RegistryKey r = new RegistryKey(RootKey.HKEY_CURRENT_USER, "Software\BEQ Technologies"); 1946 if(r.hasValue("myValue")) { 1947 RegistryValue v = r.getValue("myValue"); 1948 v.setType(ValueType.REG_DWORD); 1949 } // if 1950 1951 1952 53.批量转换编码从Unicode到GB2312 1953 1954 54.删除空文件夹 1955 //import java.io.*; 1956 File f=new File(%%1); 1957 if (isFolerNull(f)) { 1958 for (File file :f.listFiles()) { 1959 if (file.list().length == 0) 1960 file.delete(); 1961 } 1962 } 1963 1964 55.GB2312文件转UTF-8格式 1965 //import java.io.*; 1966 public class CharsetConvertor { 1967 public static void main(String[] args) { 1968 String str = "This is a test for *中网!@#$。,?"; 1969 try { 1970 File f = new File("D:/test.txt"); 1971 FileOutputStream fio = new FileOutputStream(f); 1972 String s = gbToUtf8(str); 1973 fio.write(s.getBytes("UTF-8")); 1974 fio.close(); 1975 } 1976 catch (Exception e) { 1977 e.printStackTrace(); 1978 } 1979 } 1980 1981 public static String gbToUtf8(String str) throws UnsupportedEncodingException { 1982 StringBuffer sb = new StringBuffer(); 1983 for (int i = 0; i < str.length(); i++) { 1984 String s = str.substring(i, i + 1); 1985 if (s.charAt(0) > 0x80) { 1986 byte[] bytes = s.getBytes("Unicode"); 1987 String binaryStr = ""; 1988 for (int j = 2; j < bytes.length; j += 2) { 1989 // the first byte 1990 String hexStr = getHexString(bytes[j + 1]); 1991 String binStr = getBinaryString(Integer.valueOf(hexStr, 16)); 1992 binaryStr += binStr; 1993 // the second byte 1994 hexStr = getHexString(bytes[j]); 1995 binStr = getBinaryString(Integer.valueOf(hexStr, 16)); 1996 binaryStr += binStr; 1997 } 1998 // convert unicode to utf-8 1999 String s1 = "1110" + binaryStr.substring(0, 4); 2000 String s2 = "10" + binaryStr.substring(4, 10); 2001 String s3 = "10" + binaryStr.substring(10, 16); 2002 byte[] bs = new byte[3]; 2003 bs[0] = Integer.valueOf(s1, 2).byteValue(); 2004 bs[1] = Integer.valueOf(s2, 2).byteValue(); 2005 bs[2] = Integer.valueOf(s3, 2).byteValue(); 2006 String ss = new String(bs, "UTF-8"); 2007 sb.append(ss); 2008 } else { 2009 sb.append(s); 2010 } 2011 } 2012 return sb.toString(); 2013 } 2014 2015 private static String getHexString(byte b) { 2016 String hexStr = Integer.toHexString(b); 2017 int m = hexStr.length(); 2018 if (m < 2) { 2019 hexStr = "0" + hexStr; 2020 } else { 2021 hexStr = hexStr.substring(m - 2); 2022 } 2023 return hexStr; 2024 } 2025 2026 private static String getBinaryString(int i) { 2027 String binaryStr = Integer.toBinaryString(i); 2028 int length = binaryStr.length(); 2029 for (int l = 0; l < 8 - length; l++) { 2030 binaryStr = "0" + binaryStr; 2031 } 2032 return binaryStr; 2033 } 2034 } 2035 2036 2037 56.UTF-8文件转GB2312格式 2038 private String utf8Togb2312(String str){ 2039 StringBuffer sb = new StringBuffer(); 2040 for(int i=0; i<str.length(); i++) { 2041 char c = str.charAt(i); 2042 switch (c) { 2043 case '+': 2044 sb.append(' '); 2045 break; 2046 case '%': 2047 try { 2048 sb.append((char)Integer.parseInt( 2049 str.substring(i+1,i+3),16)); 2050 } 2051 catch (NumberFormatException e) { 2052 throw new IllegalArgumentException(); 2053 } 2054 i += 2; 2055 break; 2056 default: 2057 sb.append(c); 2058 break; 2059 } 2060 } 2061 // Undo conversion to external encoding 2062 String result = sb.toString(); 2063 String res=null; 2064 try{ 2065 byte[] inputBytes = result.getBytes("8859_1"); 2066 res= new String(inputBytes,"UTF-8"); 2067 } 2068 catch(Exception e){} 2069 return res; 2070 } 2071 2072 57.获取文件路径的父路径 2073 String %%2=%%1.substring(0,%%1.lastIndexOf("\")); 2074 2075 58.Unicode文件转UTF-8格式 2076 try { 2077 // Convert from Unicode to UTF-8 2078 String string = "abcu5639u563b"; 2079 byte[] utf8 = string.getBytes("UTF-8"); 2080 // Convert from UTF-8 to Unicode 2081 string = new String(utf8, "UTF-8"); 2082 } catch (UnsupportedEncodingException e) { 2083 } 2084 /** 2085 * unicode 转换成 utf-8 2086 * @author fanhui 2087 * 2007-3-15 2088 * @param theString 2089 * @return 2090 */ 2091 public static String unicodeToUtf8(String theString) { 2092 char aChar; 2093 int len = theString.length(); 2094 StringBuffer outBuffer = new StringBuffer(len); 2095 for (int x = 0; x < len;) { 2096 aChar = theString.charAt(x++); 2097 if (aChar == '\') { 2098 aChar = theString.charAt(x++); 2099 if (aChar == 'u') { 2100 // Read the xxxx 2101 int value = 0; 2102 for (int i = 0; i < 4; i++) { 2103 aChar = theString.charAt(x++); 2104 switch (aChar) { 2105 case '0': 2106 case '1': 2107 case '2': 2108 case '3': 2109 case '4': 2110 case '5': 2111 case '6': 2112 case '7': 2113 case '8': 2114 case '9': 2115 value = (value << 4) + aChar - '0'; 2116 break; 2117 case 'a': 2118 case 'b': 2119 case 'c': 2120 case 'd': 2121 case 'e': 2122 case 'f': 2123 value = (value << 4) + 10 + aChar - 'a'; 2124 break; 2125 case 'A': 2126 case 'B': 2127 case 'C': 2128 case 'D': 2129 case 'E': 2130 case 'F': 2131 value = (value << 4) + 10 + aChar - 'A'; 2132 break; 2133 default: 2134 throw new IllegalArgumentException( 2135 "Malformed \uxxxx encoding."); 2136 } 2137 } 2138 outBuffer.append((char) value); 2139 } else { 2140 if (aChar == 't') 2141 aChar = ' '; 2142 else if (aChar == 'r') 2143 aChar = ' '; 2144 else if (aChar == 'n') 2145 aChar = ' '; 2146 else if (aChar == 'f') 2147 aChar = 'f'; 2148 outBuffer.append(aChar); 2149 } 2150 } else 2151 outBuffer.append(aChar); 2152 } 2153 return outBuffer.toString(); 2154 } 2155 2156 59.CRC循环冗余校验 2157 /* 2158 import java.nio.*; 2159 import java.util.zip.*; 2160 */ 2161 try { 2162 FileInputStream in = new FileInputStream(%%1); 2163 FileChannel channel = in.getChannel(); 2164 CRC32 crc = new CRC32(); 2165 int length = (int)channel.size(); 2166 MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, length); 2167 for(int i = 0;i<length;i++) 2168 { 2169 int c = buffer.get(i); 2170 crc.update(c); 2171 } 2172 System.out.println("crc校验和:"+(Long.toHexString(crc.getValue())).toUpperCase()); 2173 } catch (Exception e) { 2174 e.printStackTrace(); 2175 } 2176 2177 60.判断是否为空文件 2178 //import java.io.*; 2179 FileReader fr=new FileReader(%%1); 2180 if(fr.read()==1) 2181 //空白文件 2182 2183 61.终止程序 2184 Runtime.exec("taskkill /F /IM %%1.exe"); 2185 2186 62.定时关机 2187 import java.awt.*; 2188 import java.awt.event.*; 2189 import java.awt.geom.*; 2190 import java.util.*; 2191 import javax.swing.*; 2192 2193 public class ClockFrame extends JFrame { 2194 private JComboBox hourBox, minuteBox, secondBox; 2195 2196 private int hour, minute, second, totalSeconds, currentSeconds; 2197 2198 private long argue; 2199 2200 private GregorianCalendar calendar; 2201 2202 private boolean change = true; 2203 2204 private static final int WIDTH = 200; 2205 2206 private static final int HEIGHT = 150; 2207 2208 public ClockFrame() { 2209 2210 setTitle("关机定时"); 2211 setSize(200, 150); 2212 2213 Container contentPanel = getContentPane(); 2214 2215 JPanel timePanel = new JPanel(); 2216 timePanel.setLayout(new GridLayout(4, 2)); 2217 2218 JLabel minuteLable = new JLabel("设置分钟"); 2219 timePanel.add(minuteLable); 2220 minuteBox = new JComboBox(); 2221 timePanel.add(minuteBox); 2222 for (int i = 0; i < 60; i++) { 2223 minuteBox.addItem(i); 2224 } 2225 minuteBox.addActionListener(new ActionListener() { 2226 public void actionPerformed(ActionEvent evt) { 2227 minute = ((Integer) minuteBox.getSelectedItem()).intValue(); 2228 } 2229 }); 2230 2231 JLabel secondLable = new JLabel("设置秒钟"); 2232 timePanel.add(secondLable); 2233 secondBox = new JComboBox(); 2234 timePanel.add(secondBox); 2235 for (int i = 0; i < 60; i++) { 2236 secondBox.addItem(i); 2237 } 2238 secondBox.addActionListener(new ActionListener() { 2239 public void actionPerformed(ActionEvent evt) { 2240 second = ((Integer) secondBox.getSelectedItem()).intValue(); 2241 } 2242 }); 2243 contentPanel.add(timePanel, BorderLayout.CENTER); 2244 2245 JButton check = new JButton("确定"); 2246 contentPanel.add(check, BorderLayout.SOUTH); 2247 check.addActionListener(new ActionListener() { 2248 public void actionPerformed(ActionEvent evt) { 2249 JButton check=(JButton) evt.getSource(); 2250 if (check.getText().equals("确定")) { 2251 calendar = new GregorianCalendar(); 2252 int currentSeconds = calendar.get(Calendar.HOUR_OF_DAY) 2253 * 3600 + calendar.get(Calendar.MINUTE) * 60 2254 + calendar.get(Calendar.SECOND); 2255 totalSeconds = hour * 3600 + minute * 60 + second; 2256 2257 if (totalSeconds - currentSeconds >= 0) { 2258 argue = (totalSeconds - currentSeconds) * 1000; 2259 JOptionPane.showMessageDialog(ClockFrame.this, 2260 "您设置的时间为 " + hour + ":" + minute + ":" + second 2261 + " 程序将在后台运行,并在此时自动关闭计算机!", "设置成功", 2262 JOptionPane.INFORMATION_MESSAGE); 2263 hideFrame(); 2264 } 2265 try { 2266 // Thread.sleep(argue);//这句没用 2267 Runtime.getRuntime().exec( 2268 "shutdown.exe -s -c "我要关机了噢!不好意思!" -t " 2269 + totalSeconds); 2270 check.setText("取消"); 2271 } catch (Exception e) { 2272 e.printStackTrace(); 2273 } 2274 }else{ 2275 try { 2276 Runtime.getRuntime().exec("shutdown.exe -a"); 2277 check.setText("确定"); 2278 } catch (Exception e) { 2279 e.printStackTrace(); 2280 } 2281 } 2282 } 2283 }); 2284 } 2285 2286 private void hideFrame() { 2287 this.setVisible(false); 2288 } 2289 2290 public static void main(String[] args) { 2291 JFrame frame = new ClockFrame(); 2292 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 2293 frame.setLocationByPlatform(true); 2294 frame.show(); 2295 } 2296 } 2297 2298 63.显示进程列表 2299 //import java.io.*; 2300 BufferedReader br=null; 2301 try { 2302 Process proc=Runtime.getRuntime().exec("tasklist"); 2303 br=new BufferedReader(new InputStreamReader(proc.getInputStream())); 2304 @SuppressWarnings("unused") 2305 String line=null; 2306 while((line=br.readLine())!=null){ 2307 //br.readLine() 2308 } 2309 } catch (IOException e) { 2310 e.printStackTrace(); 2311 }finally{ 2312 if(br!=null){ 2313 try { 2314 br.close(); 2315 } catch (Exception e) { 2316 e.printStackTrace(); 2317 } 2318 } 2319 } 2320 2321 64.遍历文件夹列出文件大小 2322 2323 65.目录下所有文件移动到整合操作 2324 /* 2325 import java.io.*; 2326 import java.util.*; 2327 import javax.swing.*; 2328 */ 2329 JFileChooser Jfc = new JFileChooser("请选择源路径"); // 建立选择档案对话方块盒 Jfc 2330 Jfc.showDialog(null, %%1); 2331 if (!Jfc.getSelectedFile() != null) { 2332 return; 2333 } 2334 String %%1 = Jfc.getSelectedFile().getParent(); 2335 Jfc = new JFileChooser("请选择目标路径"); // 建立选择档案对话方块盒 Jfc 2336 Jfc.showDialog(null, %%1); 2337 if (!Jfc.getSelectedFile() != null) { 2338 return; 2339 } 2340 String %%2 = Jfc.getSelectedFile().getParent(); 2341 2342 66.对目标压缩文件解压缩到指定文件夹 2343 /* 2344 import java.io.*; 2345 import java.util.zip.*; 2346 */ 2347 String zipFileName=%%1; 2348 String extPlace=%%2; 2349 File myFolderPath = new File(extPlace); 2350 try { 2351 if (!myFolderPath.exists()) { 2352 myFolderPath.mkdir(); 2353 } 2354 } catch (Exception e) { 2355 //新建目录操作出错 2356 e.printStackTrace(); 2357 return; 2358 } 2359 try { 2360 ZipInputStream in = new ZipInputStream(new FileInputStream( 2361 zipFileName)); 2362 ZipEntry entry = null; 2363 while ((entry = in.getNextEntry()) != null) { 2364 String entryName = entry.getName(); 2365 File file = new File(extPlace , entryName); 2366 if (entry.isDirectory()) { 2367 file.mkdirs(); 2368 } else { 2369 FileOutputStream os = new FileOutputStream(file); 2370 // Transfer bytes from the ZIP file to the output 2371 // file 2372 byte[] buf = new byte[10240]; 2373 int len; 2374 while ((len = in.read(buf)) > 0) { 2375 os.write(buf, 0, len); 2376 } 2377 os.close(); 2378 in.closeEntry(); 2379 } 2380 } 2381 } catch (IOException e) { 2382 e.printStackTrace(); 2383 } 2384 2385 67.创建目录副本整合操作 2386 /* 2387 import java.io.*; 2388 import java.util.*; 2389 import javax.swing.*; 2390 */ 2391 JFileChooser Jfc = new JFileChooser("请选择源路径"); // 建立选择档案对话方块盒 Jfc 2392 Jfc.showDialog(null, %%1); 2393 if (!Jfc.getSelectedFile() != null) { 2394 return; 2395 } 2396 String %%1 = Jfc.getSelectedFile().getParent(); 2397 Jfc = new JFileChooser("请选择目标路径"); // 建立选择档案对话方块盒 Jfc 2398 Jfc.showDialog(null, %%1); 2399 if (!Jfc.getSelectedFile() != null) { 2400 return; 2401 } 2402 String %%2 = Jfc.getSelectedFile().getParent(); 2403 2404 68.打开网页 2405 //import java.io.*; 2406 try{ 2407 String command = "C:\Program Files\Internet Explorer\Iexplore.exe "+%%1; 2408 Runtime.getRuntime().exec(command); 2409 } catch (IOException ex) { 2410 ex.printStackTrace(); 2411 } 2412 2413 69.删除空文件夹整合操作 2414 /* 2415 import java.io.*; 2416 import java.util.*; 2417 import javax.swing.*; 2418 */ 2419 2420 70.获取磁盘所有分区,把结果放在数组drives中 2421 String root; //root代表盘符路径 2422 for(i=0;i<20;i++) //0-20代表最大的盘符数 2423 { 2424 root.Format("%c:\",allfenqu[i]); 2425 if(GetDriveType(root)==5) 2426 allfenqu[i]=' '; 2427 } 2428 2429 但我用这样的代码时结果却无法去掉光驱盘符,allfenqu[]中还是会包含光驱盘符: 2430 String root; 2431 for(i=0;i<20;i++) 2432 { 2433 root=allfenqu[i]+":\"; 2434 if(GetDriveType(root)==5) 2435 allfenqu[i]=' '; 2436 } 2437 2438 71.激活一个程序或程序关联的文件 2439 //import java.io.*; 2440 try { 2441 Runtime.getRuntime().exec(%%1); 2442 } catch (IOException e) { 2443 e.printStackTrace(); 2444 } 2445 2446 72.MP3播放 2447 //必须下载 jmf包 2448 //import javax.media.bean.playerbean.MediaPlayer; //必须下载 jmf 媒体播放包 2449 MediaPlayer player; 2450 player = new MediaPlayer(); 2451 setLayout(new FlowLayout()); 2452 try{ 2453 player.setMediaLocation("file:/F:\音乐\mp3\黑白配.mp3");// <<file:/>>不能删除 音频文件路径 2454 } catch (Exception e) { 2455 System.err.println("文件不存在"); 2456 } 2457 player.start(); 2458 player.stop(); 2459 2460 73.WAV播放 2461 /* 2462 import javax.sound.sampled.*; 2463 import java.io.*; 2464 */ 2465 private AudioFormat format; 2466 private byte[] samples; 2467 private String filename; 2468 try { 2469 // open the audio input stream 2470 AudioInputStream stream =AudioSystem.getAudioInputStream(new File(filename)); 2471 format = stream.getFormat(); 2472 // get the audio samples 2473 samples = getSamples(stream); 2474 } 2475 catch (UnsupportedAudioFileException ex) { 2476 ex.printStackTrace(); 2477 } 2478 catch (IOException ex) { 2479 ex.printStackTrace(); 2480 } 2481 2482 private byte[] getSamples(AudioInputStream audioStream) { 2483 // get the number of bytes to read 2484 int length = (int)(audioStream.getFrameLength() * format.getFrameSize()); 2485 2486 // read the entire stream 2487 byte[] samples = new byte[length]; 2488 DataInputStream is = new DataInputStream(audioStream); 2489 try { 2490 is.readFully(samples); 2491 } 2492 catch (IOException ex) { 2493 ex.printStackTrace(); 2494 } 2495 2496 // return the samples 2497 return samples; 2498 } 2499 2500 public void play(InputStream source) { 2501 2502 // use a short, 100ms (1/10th sec) buffer for real-time 2503 // change to the sound stream 2504 int bufferSize = format.getFrameSize() * 2505 Math.round(format.getSampleRate() / 10); 2506 byte[] buffer = new byte[bufferSize]; 2507 2508 // create a line to play to 2509 SourceDataLine line; 2510 try { 2511 DataLine.Info info = 2512 new DataLine.Info(SourceDataLine.class, format); 2513 line = (SourceDataLine)AudioSystem.getLine(info); 2514 line.open(format, bufferSize); 2515 } 2516 catch (LineUnavailableException ex) { 2517 ex.printStackTrace(); 2518 return; 2519 } 2520 2521 // start the line 2522 line.start(); 2523 2524 // copy data to the line 2525 try { 2526 int numBytesRead = 0; 2527 while (numBytesRead != -1) { 2528 numBytesRead = 2529 source.read(buffer, 0, buffer.length); 2530 if (numBytesRead != -1) { 2531 line.write(buffer, 0, numBytesRead); 2532 } 2533 } 2534 } 2535 catch (IOException ex) { 2536 ex.printStackTrace(); 2537 } 2538 2539 // wait until all data is played, then close the line 2540 line.drain(); 2541 line.close(); 2542 } 2543 2544 throws Exception 2545 String filename=%%1; 2546 InputStream stream =new ByteArrayInputStream(sound.getSamples()); 2547 // play the sound 2548 sound.play(stream); 2549 2550 74.写图像到剪切板 2551 /* 2552 import java.awt.*; 2553 import java.awt.datatransfer.*; 2554 import java.io.*; 2555 private final Image image; 2556 */ 2557 Transferable trans = new Transferable() { 2558 public DataFlavor[] getTransferDataFlavors() { 2559 return new DataFlavor[] { DataFlavor.imageFlavor }; 2560 } 2561 2562 public boolean isDataFlavorSupported(DataFlavor flavor) { 2563 return DataFlavor.imageFlavor.equals(flavor); 2564 } 2565 2566 public Object getTransferData(DataFlavor flavor) 2567 throws UnsupportedFlavorException, IOException { 2568 if (isDataFlavorSupported(flavor)) 2569 return image; 2570 throw new UnsupportedFlavorException(flavor); 2571 } 2572 }; 2573 Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans, 2574 null); 2575 2576 75.从剪贴板复制图像到窗体 2577 2578 76.删除文件夹下的所有文件且不删除文件夹下的文件夹 2579 /* 2580 import java.io.*; 2581 import java.util.*; 2582 */ 2583 LinkedList<String> folderList = new LinkedList<String>(); 2584 folderList.add(%%1); 2585 while (folderList.size() > 0) { 2586 File file = new File((String)folderList.poll()); 2587 File[] files = file.listFiles(); 2588 ArrayList<File> fileList = new ArrayList<File>(); 2589 for (int i = 0; i < files.length; i++) { 2590 if (files[i].isDirectory()) { 2591 folderList.add(files[i].getPath()); 2592 } else { 2593 fileList.add(files[i]); 2594 } 2595 } 2596 for (File f : fileList) { 2597 f.delete(); 2598 } 2599 } 2600 2601 78.Unicode文件转GB2312格式 2602 private static boolean isNeedConvert(char para){ 2603 return ((para&(0x00FF))!=para); 2604 } 2605 String dataStr=%%1;"\u9009 \u5173"; 2606 int index = 0; 2607 StringBuffer buffer = new StringBuffer(); 2608 while(index<dataStr.length()) { 2609 if(!"\u".equals(dataStr.substring(index,index+2))){ 2610 buffer.append(dataStr.charAt(index)); 2611 index++; 2612 continue; 2613 } 2614 String charStr = ""; 2615 charStr = dataStr.substring(index+2,index+6); 2616 char letter = (char) Integer.parseInt(charStr, 16 ); 2617 buffer.append(letter); 2618 index+=6; 2619 } 2620 String %%2=buffer.toString(); 2621 2622 79.开源程序库Xercesc-C++代码工程中内联 2623 import java.io.*; 2624 import java.util.*; 2625 import java.util.regex.*; 2626 public class InlineXercesc { 2627 private final String filter = ".cpp"; 2628 2629 private ArrayList<String> all = new ArrayList<String>(); 2630 2631 private LinkedList<String> fal2 = new LinkedList<String>(); 2632 2633 private static String CurDir = System.getProperty("user.dir"); 2634 2635 private void doSearch(String path) { 2636 File filepath = new File(path); 2637 if (filepath.exists() && filepath.isDirectory()) { 2638 File[] fileArray = filepath.listFiles(); 2639 for (File f : fileArray) { 2640 if (f.isDirectory()) { 2641 doSearch(f.getPath()); 2642 } else { 2643 if (f.getName().indexOf(filter) >= 0) { 2644 for (String file : all) { 2645 if (file.substring(file.lastIndexOf("\") + 1) 2646 .equals(f.getName())) { 2647 fal2.add(f.getAbsolutePath()); 2648 } 2649 } 2650 } 2651 } 2652 } 2653 } 2654 } 2655 2656 public InlineXercesc(String lib) throws IOException { 2657 String SourceLib = "D:\Desktop\大项目\xerces-c-3.0.1\src"; 2658 Pattern pattern = Pattern.compile("include.*?" + lib + ".*?>"); // 第一个参数为需要匹配的字符串 2659 Matcher matcher = pattern.matcher(""); 2660 LinkedList<String> fal = new LinkedList<String>(); 2661 File delfile = new File(CurDir); 2662 File[] files2 = delfile.listFiles(); 2663 for (int l = 0; l < files2.length; l++) { 2664 if (files2[l].isDirectory()) { 2665 String enumDir = CurDir + "\" + files2[l].getName() + "\"; 2666 LinkedList<String> folderList = new LinkedList<String>(); 2667 folderList.add(files2[l].getAbsolutePath()); 2668 while (folderList.size() > 0) { 2669 File file = new File((String)folderList.poll()); 2670 File[] files = file.listFiles(); 2671 for (int i = 0; i < files.length; i++) { 2672 if (files[i].isDirectory()) { 2673 folderList.add(files[i].getPath()); 2674 } else { 2675 String fileStr = files[i].getAbsolutePath(); // 第2个参数开始,均为文件名。 2676 BufferedReader br = null; 2677 String line; 2678 try { 2679 br = new BufferedReader(new FileReader(fileStr)); // 打开文件 2680 } catch (IOException e) { 2681 // 没有打开文件,则产生异常 2682 System.err.println("Cannot read '" + fileStr 2683 + "': " + e.getMessage()); 2684 continue; 2685 } 2686 StringBuilder sb = new StringBuilder(2048); 2687 while ((line = br.readLine()) != null) { // 读入一行,直到文件结束 2688 matcher.reset(line); // 匹配字符串 2689 if (matcher.find()) { // 如果有匹配的字符串,则输出 2690 sb.append(line.replace( 2691 line.substring(line.indexOf("<"), 2692 line.lastIndexOf("/") + 1), 2693 """).replace('>', '"')); 2694 line = line.substring( 2695 line.indexOf("<") + 1, 2696 line.lastIndexOf(">")).replace('/', 2697 '\'); 2698 fal.add(SourceLib + "\" + line); 2699 } else { 2700 sb.append(line); 2701 } 2702 sb.append(" "); 2703 } 2704 br.close(); // 关闭文件 2705 FileWriter fw2 = new FileWriter(fileStr); 2706 fw2.write(sb.toString()); 2707 fw2.flush(); 2708 fw2.close(); 2709 } 2710 } 2711 } 2712 while (fal.size() > 0) { 2713 String file = fal.poll(); // 第2个参数开始,均为文件名。 2714 String targetPath = enumDir 2715 + file.substring(file.lastIndexOf("\") + 1); 2716 if (!new File(targetPath).exists()) { 2717 BufferedReader br = null; 2718 String line; 2719 try { 2720 br = new BufferedReader(new FileReader(file)); // 打开文件 2721 } catch (IOException e) { 2722 // 没有打开文件,则产生异常 2723 System.err.println("Cannot read '" + file + "': " 2724 + e.getMessage()); 2725 continue; 2726 } 2727 FileWriter fw = new FileWriter(targetPath); 2728 while ((line = br.readLine()) != null) { // 读入一行,直到文件结束 2729 matcher.reset(line); // 匹配字符串 2730 if (matcher.find()) { // 如果有匹配的字符串,则输出 2731 fal.add(SourceLib 2732 + "\" 2733 + line.substring(line.indexOf("<") + 1, 2734 line.lastIndexOf(">")).replace( 2735 '/', '\')); 2736 line = line.replace(line.substring(line 2737 .indexOf("<"), 2738 line.lastIndexOf("/") + 1), """); 2739 line = line.replace(">", """); 2740 2741 } 2742 fw.write(line + " "); 2743 } 2744 fw.flush(); 2745 fw.close(); 2746 br.close(); // 关闭文件 2747 2748 } 2749 } 2750 LinkedList<String> folderListArr = new LinkedList<String>(); 2751 folderListArr.add(CurDir); 2752 while (folderListArr.size() > 0) { 2753 File file = new File(folderListArr.poll()); 2754 File[] files = file.listFiles(); 2755 for (int i = 0; i < files.length; i++) { 2756 if (files[i].isDirectory()) { 2757 folderListArr.add(files[i].getPath()); 2758 } else { 2759 if (files[i].getName().substring( 2760 files[i].getName().lastIndexOf('.')) 2761 .equals(".hpp")) 2762 all.add(files[i].getAbsoluteFile().toString() 2763 .replace(".hpp", ".cpp")); 2764 } 2765 } 2766 } 2767 int count = 1; 2768 while (count > 0) { 2769 doSearch(SourceLib); 2770 all.clear(); 2771 while (fal2.size() > 0) { 2772 String file1 = fal2.poll(); // 第2个参数开始,均为文件名。 2773 String targetPath = enumDir 2774 + file1.substring(file1.lastIndexOf("\") + 1); 2775 if (!new File(targetPath).exists()) { 2776 BufferedReader br = null; 2777 String line; 2778 try { 2779 br = new BufferedReader(new FileReader(file1)); // 打开文件 2780 } catch (IOException e) { 2781 // 没有打开文件,则产生异常 2782 System.err.println("Cannot read '" + file1 2783 + "': " + e.getMessage()); 2784 continue; 2785 } 2786 FileWriter fw; 2787 try { 2788 fw = new FileWriter(targetPath); 2789 while ((line = br.readLine()) != null) { // 读入一行,直到文件结束 2790 matcher.reset(line); // 匹配字符串 2791 if (matcher.find()) { // 如果有匹配的字符串,则输出 2792 fal2.add(SourceLib 2793 + "\" 2794 + line.substring( 2795 line.indexOf('<') + 1, 2796 line.lastIndexOf('>')) 2797 .replace('/', '\')); 2798 all.add(fal2.getLast().replace(".hpp", 2799 ".cpp")); 2800 line = line.replace(line.substring(line 2801 .indexOf('<'), line 2802 .lastIndexOf('/') + 1), """); 2803 line = line.replace('>', '"'); 2804 } 2805 fw.write(line + " "); 2806 } 2807 fw.flush(); 2808 fw.close(); 2809 br.close(); // 关闭文件 2810 } catch (IOException e) { 2811 e.printStackTrace(); 2812 } 2813 } 2814 } 2815 count = all.size(); 2816 } 2817 } 2818 } 2819 } 2820 2821 public static void main(String[] args) { 2822 try { 2823 new InlineXercesc("xercesc"); 2824 // 将数据写入文件 2825 try { 2826 FileWriter fw = new FileWriter(CurDir + "\DetailCpp.cmd"); 2827 fw.write("copy StdAfx.cpp+*.c+*.cpp " + CurDir 2828 + "\StdAfx.cpp && del *.c && del *.cpp"); 2829 fw.flush(); 2830 fw.close(); 2831 } catch (IOException e) { 2832 e.printStackTrace(); 2833 } 2834 } catch (IOException e) { 2835 } 2836 } 2837 } 2838 2839 80.提取包含头文件列表 2840 import java.io.*; 2841 import java.util.regex.*; 2842 import java.util.*; 2843 public class InlineExt { 2844 private String CurDir = System.getProperty("user.dir"); 2845 public InlineExt() { 2846 Pattern pattern = Pattern.compile("include.*?".*?.hpp""); // 第一个参数为需要匹配的字符串 2847 Matcher matcher = pattern.matcher(""); 2848 File delfile = new File(CurDir); 2849 File[] files2 = delfile.listFiles(); 2850 for (int l = 0; l < files2.length; l++) { 2851 if (files2[l].isDirectory()) { 2852 Set<String> ts = new LinkedHashSet<String>(); 2853 File file = new File(files2[l].getPath(), "StdAfx.cpp"); 2854 BufferedReader br = null; 2855 FileWriter fw = null; 2856 String line; 2857 try { 2858 br = new BufferedReader(new FileReader(file)); // 打开文件 2859 while ((line = br.readLine()) != null) { 2860 matcher.reset(line); // 匹配字符串 2861 if (matcher.find()) { // 如果有匹配的字符串,则输出 2862 ts.add(line.substring(line.indexOf('"') + 1, line 2863 .lastIndexOf('"'))); 2864 } 2865 } 2866 Iterator<String> it = ts.iterator(); 2867 File file2 = new File(files2[l], "ReadMe.txt"); 2868 if (file2.exists()) { 2869 fw = new FileWriter(file2); 2870 while (it.hasNext()) { 2871 fw.write("#include "" + it.next() + "" "); 2872 } 2873 } 2874 } catch (IOException e) { 2875 // 没有打开文件,则产生异常 2876 System.err.println("Cannot read '" + file + "': " 2877 + e.getMessage()); 2878 continue; 2879 } finally { 2880 try { 2881 if (br != null) 2882 br.close(); 2883 if (fw != null) 2884 fw.close(); 2885 } catch (IOException e) { 2886 e.printStackTrace(); 2887 } 2888 } 2889 } 2890 } 2891 } 2892 public static void main(String[] args) { 2893 new InlineExt(); 2894 } 2895 } 2896 2897 81.GB2312文件转Unicode格式 2898 2899 2900 82.Java程序打包 2901 /* 2902 import java.io.*; 2903 import java.util.*; 2904 private static String className; 2905 private static File myFilePath; 2906 */ 2907 String path=%%1; 2908 ProcessBuilder pb = null; 2909 myFilePath = new File(path, "conf.txt"); 2910 LinkedList<String> folderList = new LinkedList<String>(); 2911 folderList.add(path); 2912 while (folderList.size() > 0) { 2913 File file = new File((String)folderList.poll()); 2914 File[] files = file.listFiles(); 2915 for (int i = 0; i < files.length; i++) { 2916 if (files[i].isDirectory()) { 2917 folderList.add(files[i].getPath()); 2918 } else { 2919 if (files[i].getName().substring(2).contains(".") 2920 && files[i].getName().substring( 2921 files[i].getName().lastIndexOf('.')) 2922 .equals(".java")) { 2923 2924 try { 2925 className = files[i].getName().substring(0, 2926 files[i].getName().lastIndexOf('.')); 2927 if (!myFilePath.exists()) 2928 myFilePath.createNewFile(); 2929 FileWriter resultFile = new FileWriter(myFilePath); 2930 PrintWriter myFile = new PrintWriter(resultFile); 2931 myFile.println("Main-Class:" + className); 2932 myFile.flush(); 2933 myFile.close(); 2934 resultFile.close(); 2935 pb = new ProcessBuilder("javac", files[i] 2936 .getAbsolutePath() 2937 + " && jar cmf " 2938 + myFilePath.getAbsolutePath() 2939 + " " 2940 + className 2941 + ".jar " 2942 + className 2943 + ".class"); 2944 pb.start(); 2945 } catch (IOException e) { 2946 e.printStackTrace(); 2947 } 2948 } 2949 } 2950 } 2951 } 2952 folderList = new LinkedList<String>(); 2953 folderList.add(path); 2954 while (folderList.size() > 0) { 2955 File file = new File((String)folderList.poll()); 2956 File[] files = file.listFiles(); 2957 for (int i = 0; i < files.length; i++) { 2958 if (files[i].isDirectory()) { 2959 folderList.add(files[i].getPath()); 2960 } else { 2961 if (files[i].getName().substring(2).contains(".") 2962 && files[i].getName().substring( 2963 files[i].getName().lastIndexOf('.')) 2964 .equals(".class")) { 2965 files[i].delete(); 2966 } 2967 } 2968 } 2969 } 2970 2971 83.UTF-8文件转Unicode格式 2972 /** 2973 * utf-8 转换成 unicode 2974 * @author fanhui 2975 * 2007-3-15 2976 * @param inStr 2977 * @return 2978 */ 2979 public static String utf8ToUnicode(String inStr) { 2980 char[] myBuffer = inStr.toCharArray(); 2981 2982 StringBuffer sb = new StringBuffer(); 2983 for (int i = 0; i < inStr.length(); i++) { 2984 UnicodeBlock ub = UnicodeBlock.of(myBuffer[i]); 2985 if(ub == UnicodeBlock.BASIC_LATIN){ 2986 //英文及数字等 2987 sb.append(myBuffer[i]); 2988 }else if(ub == UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS){ 2989 //全角半角字符 2990 int j = (int) myBuffer[i] - 65248; 2991 sb.append((char)j); 2992 }else{ 2993 //汉字 2994 short s = (short) myBuffer[i]; 2995 String hexS = Integer.toHexString(s); 2996 String unicode = "\u"+hexS; 2997 sb.append(unicode.toLowerCase()); 2998 } 2999 } 3000 return sb.toString(); 3001 } 3002 3003 84.创建PDF文档 3004 /* 3005 http://www.lowagie.com/iText/ 3006 http://jaist.dl.sourceforge.net/sourceforge/itext/itext-1.4.jar 3007 http://itextdocs.lowagie.com/downloads/iTextAsian.jar 3008 http://itextdocs.lowagie.com/downloads/iTextAsianCmaps.jar 3009 import java.io.*; 3010 import com.lowagie.text.*; 3011 import com.lowagie.text.pdf.PdfWriter; 3012 */ 3013 Document document = new Document(); 3014 try 3015 { 3016 PdfWriter.getInstance(document, new FileOutputStream(%%1)); //"HelloWorld.pdf" 3017 // 添加PDF文档的一些信息 3018 document.addTitle("Hello World example"); 3019 document.addAuthor("Bruno Lowagie"); 3020 document.addSubject("This example explains how to add metadata."); 3021 document.addKeywords("iText, Hello World, step 3, metadata"); 3022 document.addCreator("My program using iText"); 3023 document.open(); 3024 // 插入一个段落 3025 document.add(new Paragraph("Hello World!")); 3026 3027 } 3028 catch (DocumentException de) 3029 { 3030 System.err.println(de.getMessage()); 3031 } 3032 catch (IOException ioe) 3033 { 3034 System.err.println(ioe.getMessage()); 3035 } 3036 3037 // 关闭打开的文档 3038 document.close(); 3039 3040 三、中文问题: 3041 3042 由于iText不支持东亚语言,我们下载了iTextAsian.jar 以后,就可以在PDF里面写中文: 3043 3044 /** 3045 * AsianTest.java 3046 */ 3047 import java.io.*; 3048 import com.lowagie.text.*; 3049 import com.lowagie.text.pdf.*; 3050 import java.awt.*; 3051 3052 public class AsianTest{ 3053 3054 public static void main(String[] args) { 3055 3056 // 创建一个Document对象 3057 Document document = new Document(); 3058 3059 try 3060 { 3061 3062 // 生成名为 AsianTest.pdf 的文档 3063 PdfWriter.getInstance(document, new FileOutputStream("AsianTest.pdf")); 3064 3065 /** 新建一个字体,iText的方法 3066 * STSongStd-Light 是字体,在iTextAsian.jar 中以property为后缀 3067 * UniGB-UCS2-H 是编码,在iTextAsian.jar 中以cmap为后缀 3068 * H 代表文字版式是 横版, 相应的 V 代表 竖版 3069 */ 3070 BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", false); 3071 3072 Font fontChinese = new Font(bfChinese, 12, Font.NORMAL, Color.GREEN); 3073 3074 // 打开文档,将要写入内容 3075 document.open(); 3076 3077 // 插入一个段落 3078 Paragraph par = new Paragraph("我们",fontChinese); 3079 3080 document.add(par); 3081 3082 } 3083 catch (DocumentException de) 3084 { 3085 System.err.println(de.getMessage()); 3086 } 3087 catch (IOException ioe) 3088 { 3089 System.err.println(ioe.getMessage()); 3090 } 3091 3092 // 关闭打开的文档 3093 document.close(); 3094 } 3095 } 3096 3097 就可以显示中文了。 3098 3099 3100 四、其他问题:(应导入相应的包) 3101 3102 1. 换页: 3103 3104 document.newPage(); 3105 3106 2. 表格: 3107 3108 // 设置 Table 3109 Table aTable = new Table(3); 3110 int width[] = {25,25,50}; 3111 aTable.setWidths(width); 3112 aTable.setWidth(80); // 占页面宽度 80% 3113 3114 aTable.setDefaultHorizontalAlignment(Element.ALIGN_LEFT); 3115 aTable.setDefaultVerticalAlignment(Element.ALIGN_MIDDLE); 3116 aTable.setAutoFillEmptyCells(true); //自动填满 3117 aTable.setPadding(1); 3118 aTable.setSpacing(1); 3119 aTable.setDefaultCellBorder(0); 3120 aTable.setBorder(0); 3121 3122 Cell cell = new Cell(new Phrase("这是一个测试的 3*3 Table 数据", fontChinese )); 3123 cell.setVerticalAlignment(Element.ALIGN_TOP); 3124 cell.setRowspan(3); 3125 aTable.addCell(cell); 3126 3127 aTable.addCell(new Cell("#1")); 3128 aTable.addCell(new Cell("#2")); 3129 aTable.addCell(new Cell("#3")); 3130 3131 aTable.addCell(new Cell("#4")); 3132 aTable.addCell(new Cell("#5")); 3133 aTable.addCell(new Cell("#6")); 3134 3135 document.add(aTable); 3136 3137 3. 图片: 3138 3139 // 可以是绝对路径,也可以是URL 3140 Image img = Image.getInstance("logo.gif"); 3141 3142 // Image image = Image.getInstance(new URL(http://xxx.com/logo.jpg)); 3143 3144 img.setAbsolutePosition(0, 0); 3145 3146 document.add(img); 3147 3148 五、参考文档: 3149 3150 iText 3151 http://www.lowagie.com/iText/ 3152 3153 iText API: 3154 http://itext.sourceforge.net/docs/ 3155 3156 http://www.sentom.net/list.asp?id=42 3157 3158 85.创建Word文档 3159 /* 3160 import java.awt.*; 3161 import java.io.*; 3162 import com.lowagie.text.*; 3163 import com.lowagie.text.pdf.*; 3164 import com.lowagie.text.rtf.*; 3165 */ 3166 public void createDocContext(String file) throws DocumentException, 3167 IOException { 3168 // 设置纸张大小 3169 Document document = new Document(PageSize.A4); 3170 // 建立一个书写器(Writer)与document对象关联,通过书写器(Writer)可以将文档写入到磁盘中 3171 RtfWriter2.getInstance(document, new FileOutputStream(file)); 3172 document.open(); 3173 // 设置中文字体 3174 BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", 3175 "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); 3176 // 标题字体风格 3177 Font titleFont = new Font(bfChinese, 12, Font.BOLD); 3178 // 正文字体风格 3179 Font contextFont = new Font(bfChinese, 10, Font.NORMAL); 3180 Paragraph title = new Paragraph("标题"); 3181 // 设置标题格式对齐方式 3182 title.setAlignment(Element.ALIGN_CENTER); 3183 title.setFont(titleFont); 3184 document.add(title); 3185 3186 String contextString = "iText是一个能够快速产生PDF文件的java类库。" 3187 + " "// 换行 3188 + "iText的java类对于那些要产生包含文本," 3189 + "表格,图形的只读文档是很有用的。它的类库尤其与java Servlet有很好的给合。" 3190 + "使用iText与PDF能够使你正确的控制Servlet的输出。"; 3191 Paragraph context = new Paragraph(contextString); 3192 // 正文格式左对齐 3193 context.setAlignment(Element.ALIGN_LEFT); 3194 context.setFont(contextFont); 3195 // 离上一段落(标题)空的行数 3196 context.setSpacingBefore(5); 3197 // 设置第一行空的列数 3198 context.setFirstLineIndent(20); 3199 document.add(context); 3200 3201 //利用类FontFactory结合Font和Color可以设置各种各样字体样式 3202 /** 3203 * Font.UNDERLINE 下划线,Font.BOLD 粗体 3204 */ 3205 Paragraph underline = new Paragraph("下划线的实现", FontFactory.getFont( 3206 FontFactory.HELVETICA_BOLDOBLIQUE, 18, Font.UNDERLINE, 3207 new Color(0, 0, 255))); 3208 document.add(underline); 3209 3210 // 设置 Table 表格 3211 Table aTable = new Table(3); 3212 int width[] = {25,25,50}; 3213 aTable.setWidths(width);//设置每列所占比例 3214 aTable.setWidth(90); // 占页面宽度 90% 3215 3216 aTable.setAlignment(Element.ALIGN_CENTER);//居中显示 3217 aTable.setAlignment(Element.ALIGN_MIDDLE);//纵向居中显示 3218 aTable.setAutoFillEmptyCells(true); //自动填满 3219 aTable.setBorderWidth(1); //边框宽度 3220 aTable.setBorderColor(new Color(0, 125, 255)); //边框颜色 3221 aTable.setPadding(2);//衬距,看效果就知道什么意思了 3222 aTable.setSpacing(3);//即单元格之间的间距 3223 aTable.setBorder(2);//边框 3224 3225 //设置表头 3226 /** 3227 * cell.setHeader(true);是将该单元格作为表头信息显示; 3228 * cell.setColspan(3);指定了该单元格占3列; 3229 * 为表格添加表头信息时,要注意的是一旦表头信息添加完了之后, 3230 * 必须调用 endHeaders()方法,否则当表格跨页后,表头信息不会再显示 3231 */ 3232 Cell haderCell = new Cell("表格表头"); 3233 haderCell.setHeader(true); 3234 haderCell.setColspan(3); 3235 aTable.addCell(haderCell); 3236 aTable.endHeaders(); 3237 3238 Font fontChinese = new Font(bfChinese, 12, Font.NORMAL, Color.GREEN); 3239 Cell cell = new Cell(new Phrase("这是一个测试的 3*3 Table 数据", fontChinese )); 3240 cell.setVerticalAlignment(Element.ALIGN_TOP); 3241 cell.setBorderColor(new Color(255, 0, 0)); 3242 cell.setRowspan(2); 3243 aTable.addCell(cell); 3244 3245 aTable.addCell(new Cell("#1")); 3246 aTable.addCell(new Cell("#2")); 3247 aTable.addCell(new Cell("#3")); 3248 aTable.addCell(new Cell("#4")); 3249 Cell cell3 = new Cell(new Phrase("一行三列数据", fontChinese )); 3250 cell3.setColspan(3); 3251 cell3.setVerticalAlignment(Element.ALIGN_CENTER); 3252 aTable.addCell(cell3); 3253 3254 document.add(aTable); 3255 document.add(new Paragraph(" ")); 3256 //添加图片 3257 Image img=Image.getInstance("d:\img01800.jpg"); 3258 img.setAbsolutePosition(0, 0); 3259 img.setAlignment(Image.RIGHT);//设置图片显示位置 3260 img.scaleAbsolute(12,35);//直接设定显示尺寸 3261 img.scalePercent(50);//表示显示的大小为原尺寸的50% 3262 img.scalePercent(25, 12);//图像高宽的显示比例 3263 img.setRotation(30);//图像旋转一定角度 3264 document.add(img); 3265 3266 document.close(); 3267 } 3268 3269 /** 3270 * @param args 3271 */ 3272 public static void main(String[] args) { 3273 CreateWordDemo word = new CreateWordDemo(); 3274 String file = "c:/demo1.doc"; 3275 try { 3276 word.createDocContext(file); 3277 } catch (DocumentException e) { 3278 e.printStackTrace(); 3279 } catch (IOException e) { 3280 e.printStackTrace(); 3281 } 3282 } 3283 3284 /* 内部线程类 */ 3285 class Son extends Thread 3286 { 3287 private ICallBack event; 3288 public Son(ICallBack callback) 3289 { 3290 event=callback; 3291 } 3292 public void run() 3293 { 3294 try 3295 { 3296 java.text.SimpleDateFormat fmt=new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 3297 while(true) 3298 { 3299 Thread.currentThread().sleep(3000); 3300 event.output(fmt.format(new java.util.Date())); 3301 Thread.currentThread().sleep(3000); 3302 } 3303 } 3304 catch (Exception e) 3305 { 3306 } 3307 } 3308 } 3309 3310 /* 回调接口 */ 3311 interface ICallBack 3312 { 3313 public void output(); 3314 } 3315 3316 86.快速高效的文件加密 3317 /* 3318 import java.util.*; 3319 import java.io.*; 3320 import javax.swing.*; 3321 */ 3322 private static final String CharSet = "0123456789ABCDEF"; 3323 private static final int a[] = { 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3324 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 }; 3325 private static final int b[] = { 3, 3, 3, 5, 5, 3, 3, 3, 5, 3, 5, 3, 7, 3, 3326 11, 7, 11, 3, 5, 3, 3, 3, 7, 5, 5, 3, 7, 3, 11, 13, 3 }; 3327 private static final int c[] = { 3, 5, 7, 5, 7, 11, 13, 19, 17, 29, 19, 31, 3328 17, 41, 11, 19, 13, 47, 29, 53, 59, 67, 29, 41, 43, 71, 31, 73, 23, 3329 23, 101 }; 3330 private static final int d[] = { 5, 7, 11, 13, 17, 17, 19, 29, 43, 43, 47, 3331 47, 59, 61, 61, 67, 71, 71, 73, 79, 89, 101, 101, 103, 107, 107, 3332 109, 109, 127, 149, 151 }; 3333 private static int ka, kb, kc, kd; 3334 3335 private static void init() { 3336 Date t1 = new Date(); 3337 Date t2 = new Date(79, 8, 23, 8, 30, 0); // "9-23-1979 8:30" 3338 int GetDays = 0; 3339 int result = 0; 3340 Calendar start = new GregorianCalendar(); 3341 Calendar end = new GregorianCalendar(); 3342 start.setTime(t2); 3343 end.setTime(t1); 3344 Calendar startCalendar = start; 3345 int startYear = start.get(Calendar.YEAR); 3346 int startMonth = start.get(Calendar.MONTH); 3347 int startDayOfM = start.get(Calendar.DAY_OF_MONTH); 3348 int startDayOfY = start.get(Calendar.DAY_OF_YEAR); 3349 3350 Calendar endCalendar = end; 3351 int endYear = end.get(Calendar.YEAR); 3352 int endMonth = end.get(Calendar.MONTH); 3353 int endDayOfM = end.get(Calendar.DAY_OF_MONTH); 3354 int endDayOfY = end.get(Calendar.DAY_OF_YEAR); 3355 int startLastYear = 0, startLastDayOfY = 0; 3356 if (endYear == startYear) { 3357 startLastYear = endDayOfY < startDayOfY ? startYear : endYear; 3358 startLastDayOfY = endDayOfY < startDayOfY ? startDayOfY : endDayOfY; 3359 } else if (endYear < startYear) { 3360 startLastYear = startYear; 3361 startLastDayOfY = startDayOfY; 3362 } else { 3363 startLastYear = endYear; 3364 startLastDayOfY = endDayOfY; 3365 } 3366 3367 if ((endYear == startYear && endDayOfY == startDayOfY) 3368 || (startLastYear == startYear && startLastDayOfY == startDayOfY)) { 3369 GetDays = result; 3370 } else if (startYear == endYear) { 3371 GetDays = endDayOfY - startDayOfY; 3372 } else { 3373 Calendar tmp = Calendar.getInstance(); 3374 result = startCalendar.getActualMaximum(Calendar.DAY_OF_YEAR) 3375 - startDayOfY; 3376 for (int i = startYear + 1; i < endYear; i++) { 3377 tmp.set(i, tmp.get(Calendar.MONTH), tmp 3378 .get(Calendar.DAY_OF_MONTH)); 3379 result += tmp.getActualMaximum(Calendar.DAY_OF_YEAR); 3380 } 3381 result += end.get(Calendar.DAY_OF_YEAR); 3382 GetDays = result; 3383 } 3384 Random rand = new Random(GetDays * 8 - 55); 3385 int r = rand.nextInt(GetDaysInMoths(t2.getMonth() + 1)); 3386 r=0; 3387 ka = a[r]; 3388 kb = b[r]; 3389 kc = c[r]; 3390 kd = d[r]; 3391 } 3392 3393 private static int GetDaysInMoths(int nMoths) { 3394 switch (nMoths) { 3395 case 2: { 3396 int nYear = new Date().getYear() + 1900; 3397 if ((nYear % 4 == 0) && (nYear % 400) != 0) { 3398 return 29; 3399 } else { 3400 return 28; 3401 } 3402 } 3403 case 1: 3404 case 3: 3405 case 5: 3406 case 7: 3407 case 8: 3408 case 10: 3409 case 12: 3410 return 31; 3411 case 4: 3412 case 6: 3413 case 9: 3414 case 11: 3415 return 30; 3416 default: 3417 return -1; 3418 } 3419 } 3420 3421 private static int niyuan(int m, int n) { 3422 int a, b, c, d, t, yu = 0, shang, mod; 3423 a = m; 3424 b = n; 3425 mod = a; 3426 c = 0; 3427 d = 1; 3428 while (b < 0) 3429 b += a; 3430 if (a % b == 0 || b % 2 == 0) 3431 return 0; 3432 while (b != 1) { 3433 t = a % b; 3434 shang = a / b; 3435 a = b; 3436 b = t; 3437 yu = c - shang * d; 3438 c = d; 3439 d = yu; 3440 } 3441 if (yu < 0) 3442 yu += mod; 3443 return yu; 3444 } 3445 JFileChooser chooser = new JFileChooser(); 3446 chooser.setCurrentDirectory(new File("E:")); 3447 chooser 3448 .addChoosableFileFilter(new javax.swing.filechooser.FileFilter() { 3449 public boolean accept(File f) { 3450 return f.getName().toLowerCase().endsWith(".zip") 3451 || f.isDirectory(); 3452 } 3453 3454 public String getDescription() { 3455 return "Compress Files(*.zip)"; 3456 } 3457 }); 3458 chooser 3459 .addChoosableFileFilter(new javax.swing.filechooser.FileFilter() { 3460 public boolean accept(File f) { 3461 return f.getName().toLowerCase().endsWith(".txt") 3462 || f.isDirectory(); 3463 } 3464 3465 public String getDescription() { 3466 return "Text Files(*.txt)"; 3467 } 3468 }); 3469 chooser 3470 .addChoosableFileFilter(new javax.swing.filechooser.FileFilter() { 3471 public boolean accept(File f) { 3472 return f.getName().toLowerCase().endsWith(".exe") 3473 || f.isDirectory(); 3474 } 3475 3476 public String getDescription() { 3477 return "Executeable Files(*.exe)"; 3478 } 3479 }); 3480 if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { 3481 String name = chooser.getSelectedFile().getPath(); 3482 JFileChooser chooser2 = new JFileChooser(); 3483 chooser2.setCurrentDirectory(new File("E:")); 3484 if (name.substring(name.lastIndexOf('.')).equals(".txt")) { 3485 char[] sRead = new char[10240]; 3486 char[] hexstr = new char[10240]; 3487 char[] pbuf = new char[20480]; 3488 char[] rRead = new char[20480]; 3489 char[] out2 = new char[10240]; 3490 chooser2 3491 .addChoosableFileFilter(new javax.swing.filechooser.FileFilter() { 3492 public boolean accept(File f) { 3493 return f.getName().toLowerCase().endsWith( 3494 ".zip") 3495 || f.isDirectory(); 3496 } 3497 3498 public String getDescription() { 3499 return "Compress Files(*.zip)"; 3500 } 3501 }); 3502 chooser2 3503 .addChoosableFileFilter(new javax.swing.filechooser.FileFilter() { 3504 public boolean accept(File f) { 3505 return f.getName().toLowerCase().endsWith( 3506 ".exe") 3507 || f.isDirectory(); 3508 } 3509 3510 public String getDescription() { 3511 return "Executeable Files(*.exe)"; 3512 } 3513 }); 3514 if (chooser2.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { 3515 init(); 3516 FileOutputStream fw = null; 3517 try { 3518 FileInputStream fis = new FileInputStream(chooser 3519 .getSelectedFile()); 3520 fw = new FileOutputStream(chooser2.getSelectedFile()); 3521 byte[] buffer = new byte[20480]; 3522 int js = 0, tmp; 3523 int aany, ddny; 3524 int r00 = ka * kc * kd; 3525 int r01 = -ka * kb * kc; 3526 int r10 = -kb * kc * kc; 3527 int r11 = ka * kb * kc; 3528 int x00 = ka * ka * kc * kd - ka * kb * kc * kc; 3529 int x11 = ka * kb * kc * kd - kb * kb * kc * kc; 3530 while (x00 % 2 == 0) { 3531 x00 /= 2; 3532 r00 /= 2; 3533 r01 /= 2; 3534 } 3535 while (x11 % 2 == 0) { 3536 x11 /= 2; 3537 r10 /= 2; 3538 r11 /= 2; 3539 } 3540 aany = x00; 3541 ddny = x11; 3542 if (niyuan(1024, aany) != 0 && niyuan(1024, ddny) != 0) { 3543 int kn00 = r00 * niyuan(1024, x00); 3544 int kn01 = r01 * niyuan(1024, x00); 3545 int kn10 = r10 * niyuan(1024, x11); 3546 int kn11 = r11 * niyuan(1024, x11); 3547 ka = kn00; 3548 kb = kn01; 3549 kc = kn10; 3550 kd = kn11; 3551 } else { 3552 JOptionPane.showMessageDialog(null, "无逆矩阵!"); 3553 System.exit(0); 3554 } 3555 while (ka < 0) 3556 ka += 1024; 3557 while (kb < 0) 3558 kb += 1024; 3559 while (kc < 0) 3560 kc += 1024; 3561 while (kd < 0) 3562 kd += 1024; 3563 ka %= 1024; 3564 kb %= 1024; 3565 kc %= 1024; 3566 kd %= 1024; 3567 try { 3568 int byteread; 3569 while ((byteread = fis.read(buffer)) != -1) { 3570 int nLen = byteread / 2; 3571 byte[] sming = new byte[nLen]; 3572 String chs = new String(buffer, "US-ASCII"); 3573 for (int i = 0; i < nLen; i++) { 3574 byte bTmp; 3575 if (byteread < 2) 3576 bTmp = -1; 3577 bTmp = (byte) (CharSet.indexOf(chs 3578 .substring(i * 2, i * 2 + 1)) * 16 + CharSet 3579 .indexOf(chs.substring(i * 2 + 1, 3580 i * 2 + 2))); 3581 sming[i] = bTmp; 3582 } 3583 if (nLen % 2 != 0) 3584 js = 1; 3585 for (int i = 0; i < nLen - 1; i += 2) { 3586 char c1 = (char) sming[i]; 3587 char c2 = (char) sming[i + 1]; 3588 tmp = ka * c1 + kc * c2; 3589 while (tmp < 0) 3590 tmp += 1024; 3591 char s1 = (char) (tmp % 1024); 3592 fw.write(s1); 3593 tmp = kb * c1 + kd * c2; 3594 while (tmp < 0) 3595 tmp += 1024; 3596 char s2 = (char) (tmp % 1024); 3597 fw.write(s2); 3598 } 3599 if (js == 1) { 3600 char c3 = (char) ((sming[nLen - 1] - 4) % 1024); 3601 fw.write(c3); 3602 } 3603 } 3604 fw.flush(); 3605 } catch (IOException e) { 3606 e.printStackTrace(); 3607 } finally { 3608 try { 3609 fis.close(); 3610 fw.close(); 3611 } catch (IOException e) { 3612 e.printStackTrace(); 3613 } 3614 } 3615 } catch (FileNotFoundException e1) { 3616 e1.printStackTrace(); 3617 } 3618 if(!chooser2.getFileFilter().accept(chooser2.getSelectedFile())){ 3619 if(chooser2.getFileFilter().getDescription().equals("Compress Files(*.zip)")) 3620 chooser2.getSelectedFile().renameTo(new File(chooser2.getSelectedFile().getAbsolutePath()+".zip")); 3621 else if(chooser2.getFileFilter().getDescription().equals("Executeable Files(*.exe)")) 3622 chooser2.getSelectedFile().renameTo(new File(chooser2.getSelectedFile().getAbsolutePath()+".exe")); 3623 } 3624 3625 } 3626 } else { 3627 chooser2 3628 .setFileFilter(new javax.swing.filechooser.FileFilter() { 3629 public boolean accept(File f) { 3630 return f.getName().toLowerCase().endsWith( 3631 ".txt") 3632 || f.isDirectory(); 3633 } 3634 3635 public String getDescription() { 3636 return "Text Files"; 3637 } 3638 }); 3639 if (chooser2.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { 3640 3641 if (chooser2.getSelectedFile() != null) { 3642 init(); 3643 File oldfile = chooser.getSelectedFile(); 3644 FileInputStream inStream = null; 3645 FileWriter fw = null; 3646 try { 3647 if (oldfile.exists()) { 3648 inStream = new FileInputStream(oldfile); 3649 fw = new FileWriter(chooser2.getSelectedFile()); 3650 byte[] sRead = new byte[10240]; 3651 int byteread; 3652 while ((byteread = inStream.read(sRead)) != -1) { 3653 StringBuilder smi = new StringBuilder( 3654 byteread * 2); 3655 int js = 0; 3656 if (byteread % 2 != 0) 3657 js = 1; 3658 for (int i = 0; i < byteread - 1; i += 2) { 3659 char c1 = (char) sRead[i]; 3660 char c2 = (char) sRead[i + 1]; 3661 int tmp = ka * c1 + kc * c2; 3662 while (tmp < 0) 3663 tmp += 1024; 3664 byte s1 = (byte) (tmp % 1024); 3665 int js1 = (int) s1 >> 4 & 0xf; 3666 smi.append(CharSet.substring(js1, 3667 js1 + 1)); 3668 int ks1 = s1 & 0xf; 3669 smi.append(CharSet.substring(ks1, 3670 ks1 + 1)); 3671 tmp = kb * c1 + kd * c2; 3672 while (tmp < 0) 3673 tmp += 1024; 3674 byte s2 = (byte) (tmp % 1024); 3675 int js2 = (int) s2 >> 4 & 0xf; 3676 smi.append(CharSet.substring(js2, 3677 js2 + 1)); 3678 int ks2 = s2 & 0xf; 3679 smi.append(CharSet.substring(ks2, 3680 ks2 + 1)); 3681 } 3682 if (js == 1) { 3683 byte s3 = (byte) ((sRead[byteread - 1] - 4) % 1024); 3684 int js3 = (int) s3 >> 4 & 0xf; 3685 smi.append(CharSet.substring(js3, 3686 js3 + 1)); 3687 int ks3 = (int) s3 & 0xf; 3688 smi.append(CharSet.substring(ks3, 3689 ks3 + 1)); 3690 } 3691 fw.write(smi.toString()); 3692 } 3693 fw.flush(); 3694 } 3695 } catch (IOException e) { 3696 e.printStackTrace(); 3697 } finally { 3698 try { 3699 fw.close(); 3700 inStream.close(); 3701 } catch (IOException e) { 3702 e.printStackTrace(); 3703 } 3704 } 3705 if(!chooser2.getFileFilter().accept(chooser2.getSelectedFile())) 3706 chooser2.getSelectedFile().renameTo(new File(chooser2.getSelectedFile().getAbsolutePath()+".txt")); 3707 } 3708 } 3709 } 3710 } 3711 3712 87.菜单勾选/取消开机自启动程序 3713 3714 88.菜单勾选/取消自动登录系统 3715 3716 89.模拟键盘输入字符串 3717 /* 3718 import java.awt.*; 3719 import java.awt.event.*; 3720 throws Exception{ 3721 */ 3722 static Robot robot; 3723 static{ 3724 try { 3725 robot = new Robot(); 3726 } catch (AWTException e) {} 3727 } 3728 3729 static void sendKey(String ks){ 3730 KeyStore k = KeyStore.findKeyStore(ks); 3731 if(k!=null){ 3732 if(k.upCase) 3733 upCase(k.v); 3734 else 3735 sendKey(k.v); 3736 } 3737 else{ 3738 for(int i=0; i<ks.length(); i++){ 3739 char c = ks.charAt(i); 3740 if(c>='0'&&c<='9'){ 3741 sendKey(c); 3742 } 3743 else if(c>='a'&&c<='z'){ 3744 sendKey(c-32); 3745 } 3746 else if(c>='A'&&c<='Z'){ 3747 upCase(c); 3748 } 3749 } 3750 } 3751 } 3752 private static void upCase(int kc){ 3753 robot.keyPress(KeyEvent.VK_SHIFT); 3754 robot.keyPress(kc); 3755 robot.keyRelease(kc); 3756 robot.keyRelease(KeyEvent.VK_SHIFT); 3757 } 3758 private static void sendKey(int kc){ 3759 robot.keyPress(kc); 3760 robot.keyRelease(kc); 3761 } 3762 static class KeyStore{ 3763 //special keys 3764 final static KeyStore[] sp = { 3765 new KeyStore("{Tab}",KeyEvent.VK_TAB),//tab 3766 new KeyStore("{Enter}",KeyEvent.VK_ENTER),//enter 3767 new KeyStore("{PUp}",KeyEvent.VK_PAGE_UP),//page up 3768 new KeyStore("{<}",KeyEvent.VK_LESS),//< 3769 new KeyStore("{Up}",KeyEvent.VK_UP),//up key 3770 new KeyStore("{At}",KeyEvent.VK_AT,true),//@ 3771 new KeyStore("{Dollar}",KeyEvent.VK_DOLLAR,true),//$ 3772 }; 3773 3774 String k; 3775 int v; 3776 boolean upCase; 3777 KeyStore(String k,int v){ 3778 this(k,v,false); 3779 } 3780 3781 KeyStore(String s,int i,boolean up){ 3782 k=s; 3783 v=i; 3784 upCase=up; 3785 } 3786 static KeyStore findKeyStore(String k){ 3787 for(int i=0; i<sp.length; i++){ 3788 if(sp[i].k.equals(k)) 3789 return sp[i]; 3790 } 3791 return null; 3792 } 3793 } 3794 Thread.sleep(1000); 3795 sendKey("{Tab}");//tab 3796 sendKey("{<}");//< 3797 sendKey("abcd123AHahahAA");//abcd123AHahahAA 3798 sendKey("{At}");//@ 3799 sendKey("{Dollar}");//$ 3800 sendKey("{Up}");//up arrow 3801 3802 90.提取PDF文件中的文本 3803 //http://incubator.apache.org/pdfbox/ 3804 /* 3805 import java.io.*; 3806 import org.pdfbox.pdfparser.*; 3807 import org.pdfbox.pdmodel.*; 3808 import org.pdfbox.util.*; 3809 */ 3810 public class SimplePDFReader { 3811 /** 3812 * simply reader all the text from a pdf file. 3813 * You have to deal with the format of the output text by yourself. 3814 * 2008-2-25 3815 * @param pdfFilePath file path 3816 * @return all text in the pdf file 3817 */ 3818 public static String getTextFromPDF(String pdfFilePath) { 3819 String result = null; 3820 FileInputStream is = null; 3821 PDDocument document = null; 3822 try { 3823 is = new FileInputStream(pdfFilePath); 3824 PDFParser parser = new PDFParser(is); 3825 parser.parse(); 3826 document = parser.getPDDocument(); 3827 PDFTextStripper stripper = new PDFTextStripper(); 3828 result = stripper.getText(document); 3829 } catch (FileNotFoundException e) { 3830 // TODO Auto-generated catch block 3831 e.printStackTrace(); 3832 } catch (IOException e) { 3833 // TODO Auto-generated catch block 3834 e.printStackTrace(); 3835 } finally { 3836 if (is != null) { 3837 try { 3838 is.close(); 3839 } catch (IOException e) { 3840 // TODO Auto-generated catch block 3841 e.printStackTrace(); 3842 } 3843 } 3844 if (document != null) { 3845 try { 3846 document.close(); 3847 } catch (IOException e) { 3848 // TODO Auto-generated catch block 3849 e.printStackTrace(); 3850 } 3851 } 3852 } 3853 return result; 3854 } 3855 } 3856 得到PDF的文本内容之后,自己根据文件的格式,取得想要的文本(这里我找的就是文章的标题,在文本中恰巧都是文件的第一行的内容),然后通过java的File相关api,对文件进行更名操作。 3857 import java.io.File; 3858 import java.io.FilenameFilter; 3859 3860 public class PaperNameMender { 3861 public static void changePaperName(String filePath) { 3862 //使用SimplePDFReader得到pdf文本 3863 String ts = SimplePDFReader.getTextFromPDF(filePath); 3864 //取得一行内容 3865 String result = ts.substring(0, ts.indexOf(' ')); 3866 //得到源文件名中的最后一个逗点.的位置 3867 int index = filePath.indexOf('.'); 3868 int nextIndex = filePath.indexOf('.', index + 1); 3869 while(nextIndex != -1) { 3870 index = nextIndex; 3871 nextIndex = filePath.indexOf('.', index + 1); 3872 } 3873 //合成新文件名 3874 String newFilename = filePath.substring(0, index) + " " + 3875 result.trim() + ".pdf"; 3876 File originalFile = new File(filePath); 3877 //修改文件名 3878 originalFile.renameTo(new File(newFilename)); 3879 } 3880 } 3881 3882 3883 91.操作内存映射文件 3884 /* 3885 import java.io.*; 3886 import java.nio.*; 3887 import java.nio.channels.*; 3888 */ 3889 private static int length = 0x8FFFFFF; // 128 Mb 3890 MappedByteBuffer out = 3891 new RandomAccessFile("test.dat", "rw").getChannel() 3892 .map(FileChannel.MapMode.READ_WRITE, 0, length); 3893 for(int i = 0; i < length; i++) 3894 out.put((byte)'x'); 3895 for(int i = length/2; i < length/2 + 6; i++) 3896 //(char)out.get(i); 3897 3898 92.重定向windows控制台程序的输出信息 3899 92.1 取得Runtime.getRuntime().exec("cmd /c dir")的输入输出 3900 //import java.io.*; 3901 try { 3902 String command = "cmd /c dir"; 3903 Process proc = Runtime.getRuntime().exec(command); 3904 InputStreamReader ir = new InputStreamReader(proc.getInputStream()); 3905 LineNumberReader lnr = new LineNumberReader(ir); 3906 String line; 3907 while( (line = lnr.readLine()) != null) 3908 { 3909 //line 3910 } 3911 } catch (IOException e) { 3912 e.printStackTrace(); 3913 } 3914 3915 92.2 利用ProcessBuilder来创建Process对象,执行外部可执行程序 3916 // //Eg1: 3917 // String address = null; 3918 // 3919 // String os = System.getProperty("os.name"); 3920 // System.out.println(os); 3921 // 3922 // if (os != null) { 3923 // if (os.startsWith("Windows")) { 3924 // try { 3925 // ProcessBuilder pb = new ProcessBuilder("ipconfig", "/all"); 3926 // Process p = pb.start(); 3927 // 3928 // BufferedReader br = new BufferedReader( 3929 // new InputStreamReader(p.getInputStream())); 3930 // 3931 // String line; 3932 // while ((line = br.readLine()) != null) { 3933 // if (line.indexOf("Physical Address") != -1) { 3934 // int index = line.indexOf(":"); 3935 // address = line.substring(index + 1); 3936 // break; 3937 // } 3938 // } 3939 // br.close(); 3940 // address = address.trim(); 3941 // } catch (IOException e) { 3942 // // TODO Auto-generated catch block 3943 // e.printStackTrace(); 3944 // } 3945 // } else if (os.startsWith("Linux")) { 3946 // try { 3947 // ProcessBuilder pb = new ProcessBuilder( 3948 // 3949 // "ifconfig", "/all"); 3950 // 3951 // Process p = pb.start(); 3952 // BufferedReader br = new BufferedReader( 3953 // new InputStreamReader(p.getInputStream())); 3954 // String line; 3955 // while ((line = br.readLine()) != null) { 3956 // int index = line.indexOf("硬件地址"); 3957 // if (index != -1) { 3958 // address = line.substring(index + 4); 3959 // break; 3960 // } 3961 // } 3962 // br.close(); 3963 // address = address.trim(); 3964 // } catch (IOException e) { 3965 // e.printStackTrace(); 3966 // } 3967 // } 3968 // } 3969 3970 // //Eg2: 3971 // try { 3972 // Process proc; 3973 // proc = Runtime.getRuntime().exec("cmd.exe"); 3974 // BufferedReader read = new BufferedReader(new InputStreamReader(proc 3975 // .getInputStream())); 3976 // new Thread(new Echo(read)).start(); 3977 // 3978 // PrintWriter out = new PrintWriter(new OutputStreamWriter(proc 3979 // .getOutputStream())); 3980 // BufferedReader in = new BufferedReader(new InputStreamReader( 3981 // System.in)); 3982 // String instr = in.readLine(); 3983 // while (!"exit".equals(instr)) { 3984 // instr = in.readLine(); 3985 // out.println(instr); 3986 // out.flush(); 3987 // } 3988 // 3989 // in.readLine(); 3990 // read.close(); 3991 // out.close(); 3992 // } catch (IOException e) { 3993 // // TODO Auto-generated catch block 3994 // e.printStackTrace(); 3995 // } 3996 3997 } 3998 } 3999 4000 class Echo implements Runnable { 4001 private BufferedReader read; 4002 4003 public Echo(BufferedReader read) { 4004 read = read; 4005 } 4006 4007 public void run() { 4008 try { 4009 String line = read.readLine(); 4010 while (line != null) { 4011 //line 4012 line = read.readLine(); 4013 } 4014 } catch (IOException ex) { 4015 ex.printStackTrace(); 4016 } 4017 } 4018 } 4019 4020 93.序列化 4021 //import java.io.*; 4022 class tree implements Serializable{ 4023 public tree left; 4024 public tree right; 4025 public int id; 4026 public int level; 4027 4028 private static int count = 0 ; 4029 4030 public tree( int depth) { 4031 id = count ++ ; 4032 level = depth; 4033 if (depth > 0 ) { 4034 left = new tree(depth - 1 ); 4035 right = new tree(depth - 1 ); 4036 } 4037 } 4038 4039 public void print( int levels) { 4040 for ( int i = 0 ; i < level; i ++ ) 4041 System.out.print( " " ); 4042 System.out.println( " node " + id); 4043 4044 if (level <= levels && left != null ) 4045 left.print(levels); 4046 4047 if (level <= levels && right != null ) 4048 right.print(levels); 4049 } 4050 } 4051 try { 4052 /**/ /* 创建一个文件写入序列化树。 */ 4053 FileOutputStream ostream = new FileOutputStream(%%1); 4054 /**/ /* 创建输出流 */ 4055 ObjectOutputStream p = new ObjectOutputStream(ostream); 4056 4057 /**/ /* 创建一个二层的树。 */ 4058 tree base = new tree( 2 ); 4059 4060 p.writeObject(base); // 将树写入流中。 4061 p.writeObject( " LiLy is 惠止南国 " ); 4062 p.flush(); 4063 ostream.close(); // 关闭文件。 4064 } catch (Exception ex) { 4065 ex.printStackTrace(); 4066 } 4067 } 4068 4069 94.反序列化 4070 //import java.io.*; 4071 class tree implements Serializable{ 4072 public tree left; 4073 public tree right; 4074 public int id; 4075 public int level; 4076 4077 private static int count = 0 ; 4078 4079 public tree( int depth) { 4080 id = count ++ ; 4081 level = depth; 4082 if (depth > 0 ) { 4083 left = new tree(depth - 1 ); 4084 right = new tree(depth - 1 ); 4085 } 4086 } 4087 4088 public void print( int levels) { 4089 for ( int i = 0 ; i < level; i ++ ) 4090 System.out.print( " " ); 4091 System.out.println( " node " + id); 4092 4093 if (level <= levels && left != null ) 4094 left.print(levels); 4095 4096 if (level <= levels && right != null ) 4097 right.print(levels); 4098 } 4099 } 4100 try { 4101 FileInputStream istream = new FileInputStream(%%1); 4102 ObjectInputStream q = new ObjectInputStream(istream); 4103 4104 /**/ /* 读取树对象,以及所有子树 */ 4105 tree new_tree = (tree)q.readObject(); 4106 4107 new_tree.print( 2 ); // 打印出树形结构的最上面 2级 4108 String name = (String)q.readObject(); 4109 System.out.println( " " + name); 4110 } catch (Exception ex) { 4111 ex.printStackTrace(); 4112 } 4113 } 4114 4115 95.报表相关 4116 //http://www.jfree.org/jfreechart/ 4117 /* 4118 import java.io.*; 4119 import java.awt.*; 4120 import org.jfree.chart.*; 4121 import org.jfree.chart.title.TextTitle; 4122 import org.jfree.data.general.*; 4123 */ 4124 String title = "梦泽科技员工学历情况统计"; 4125 DefaultPieDataset piedata = new DefaultPieDataset(); 4126 piedata.setValue("大专", 8.1); 4127 piedata.setValue("大学", 27.6); 4128 piedata.setValue("硕士", 53.2); 4129 piedata.setValue("博士及以上", 19.2); 4130 piedata.setValue("大专以下", 1.9); 4131 JFreeChart chart = ChartFactory.createPieChart(title, piedata, true, true, true); 4132 chart.setTitle(new TextTitle(title, new Font("宋体", Font.BOLD, 25))); 4133 chart.addSubtitle(new TextTitle("最后更新日期:2005年5月19日", new Font("楷书", Font.ITALIC, 18))); 4134 chart.setBackgroundPaint(Color.white); 4135 try { 4136 ChartUtilities.saveChartAsJPEG(new File("PieChart.jpg"), chart, 360, 300); 4137 } catch (IOException exz) { 4138 System.err.print("....Cant′t Create image File"); 4139 } 4140 4141 96.全屏幕截取 4142 /* 4143 import java.awt.*; 4144 import java.awt.image.*; 4145 import java.io.*; 4146 import javax.imageio.*; 4147 */ 4148 try{ 4149 Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); 4150 BufferedImage screenshot = (new Robot()) 4151 .createScreenCapture(new Rectangle(0, 0, 4152 (int) d.getWidth(), (int) d.getHeight())); 4153 // 根据文件前缀变量和文件格式变量,自动生成文件名 4154 String name = %%1 + "." 4155 + %%2; //"png" 4156 File f = new File(name); 4157 ImageIO.write(screenshot, %%2, f); 4158 } catch (Exception ex) { 4159 ex.printStackTrace(); 4160 } 4161 4162 97.区域截屏 4163 /* 4164 import java.awt.*; 4165 import java.awt.image.*; 4166 import java.io.*; 4167 import java.util.*; 4168 import javax.imageio.*; 4169 */ 4170 interface ImageType { 4171 public final static String JPG = "JPG"; 4172 public final static String PNG = "PNG"; 4173 public final static String GIF = "GIF"; 4174 } 4175 public class ScreenDumpHelper { 4176 /** ScreenDumpHelper 静态对象 */ 4177 private static ScreenDumpHelper defaultScreenDumpHelper; 4178 public static ScreenDumpHelper getDefaultScreenDumpHelper() { 4179 if (defaultScreenDumpHelper == null) 4180 return new ScreenDumpHelper(); 4181 return defaultScreenDumpHelper; 4182 } 4183 public ScreenDumpHelper() { 4184 Dimension dime = Toolkit.getDefaultToolkit().getScreenSize(); 4185 setScreenArea(new Rectangle(dime)); 4186 } 4187 private Rectangle screenArea; 4188 4189 public Rectangle getScreenArea() { 4190 return screenArea; 4191 } 4192 4193 public void setScreenArea(Rectangle screenArea) { 4194 screenArea = screenArea; 4195 } 4196 4197 public void setScreenArea(int x, int y, int width, int height) { 4198 screenArea = new Rectangle(x, y, width, height); 4199 } 4200 private BufferedImage getBufferedImage() throws AWTException { 4201 BufferedImage imgBuf = null; 4202 ; 4203 imgBuf = (new Robot()).createScreenCapture(getScreenArea()); 4204 return imgBuf; 4205 } 4206 4207 /** 4208 * 将 图像数据写到 输出流中去,方便再处理 4209 * 4210 * @param fileFormat 4211 * @param output 4212 * @return 4213 */ 4214 public boolean saveToOutputStream(String fileFormat, OutputStream output) { 4215 try { 4216 ImageIO.write(getBufferedImage(), fileFormat, output); 4217 } catch (AWTException e) { 4218 return false; 4219 // e.printStackTrace(); 4220 } catch (IOException e) { 4221 return false; 4222 // e.printStackTrace(); 4223 } 4224 return true; 4225 } 4226 4227 /** 4228 * 根据文件格式 返回随机文件名称 4229 * 4230 * @param fileFormat 4231 * @return 4232 */ 4233 public String getRandomFileName(String fileFormat) { 4234 return "screenDump_" + (new Date()).getTime() + "." + fileFormat; 4235 } 4236 4237 /** 4238 * 抓取 指定区域的截图 到指定格式的文件中 -- 这个函数是核心,所有的都是围绕它来展开的 * 图片的编码并不是以后缀名来判断: 比如s.jpg 4239 * 如果其采用png编码,那么这个图片就是png格式的 4240 * 4241 * @param fileName 4242 * @param fileFormat 4243 * @return boolean 4244 */ 4245 public boolean saveToFile(String fileName, String fileFormat) { 4246 if (fileName == null) 4247 fileName = getRandomFileName(fileFormat); 4248 try { 4249 FileOutputStream fos = new FileOutputStream(fileName); 4250 saveToOutputStream(fileFormat, fos); 4251 } catch (FileNotFoundException e) { 4252 System.err.println("非常规文件或不能创建抑或覆盖此文件: " + fileName); 4253 } 4254 return true; 4255 } 4256 4257 /** 4258 * 抓取 指定 Rectangle 区域的截图 到指定格式的文件中 4259 * 4260 * @param fileName 4261 * @param fileFormat 4262 * @param screenArea 4263 * @return 4264 */ 4265 public boolean saveToFile(String fileName, String fileFormat, 4266 Rectangle screenArea) { 4267 setScreenArea(screenArea); 4268 return saveToFile(fileName, fileFormat); 4269 } 4270 4271 /** 4272 * 抓取 指定区域的截图 到指定格式的文件中 4273 * 4274 * @param fileName 4275 * @param fileFormat 4276 * @param x 4277 * @param y 4278 * @param width 4279 * @param height 4280 */ 4281 public boolean saveToFile(String fileName, String fileFormat, int x, int y, 4282 int width, int height) { 4283 setScreenArea(x, y, width, height); 4284 return saveToFile(fileName, fileFormat); 4285 } 4286 4287 /** 4288 * 将截图使用 JPG 编码 4289 * 4290 * @param fileName 4291 */ 4292 public void saveToJPG(String fileName) { 4293 saveToFile(fileName, ImageType.JPG); 4294 } 4295 4296 public void saveToJPG(String fileName, Rectangle screenArea) { 4297 saveToFile(fileName, ImageType.JPG, screenArea); 4298 } 4299 4300 public void saveToJPG(String fileName, int x, int y, int width, int height) { 4301 saveToFile(fileName, ImageType.JPG, x, y, width, height); 4302 } 4303 4304 /** 4305 * 将截图使用 PNG 编码 4306 * 4307 * @param fileName 4308 */ 4309 public void saveToPNG(String fileName) { 4310 saveToFile(fileName, ImageType.PNG); 4311 } 4312 4313 public void saveToPNG(String fileName, Rectangle screenArea) { 4314 saveToFile(fileName, ImageType.PNG, screenArea); 4315 } 4316 4317 public void saveToPNG(String fileName, int x, int y, int width, int height) { 4318 saveToFile(fileName, ImageType.PNG, x, y, width, height); 4319 } 4320 4321 public void saveToGIF(String fileName) { 4322 throw new UnsupportedOperationException("不支持保存到GIF文件"); 4323 // saveToFile(fileName, ImageType.GIF); 4324 } 4325 4326 /** 4327 * @param args 4328 */ 4329 public static void main(String[] args) { 4330 for (int i = 0; i < 5; i++) 4331 ScreenDumpHelper.getDefaultScreenDumpHelper().saveToJPG(null, 4332 i * 150, i * 150, 400, 300); 4333 } 4334 } 4335 4336 98.计算文件MD5值 4337 /* 4338 import java.io.*; 4339 import java.math.*; 4340 import java.security.*; 4341 import java.util.*; 4342 */ 4343 File file=new File(%%1); 4344 if (!file.isFile()){ 4345 return null; 4346 } 4347 MessageDigest digest = null; 4348 FileInputStream in=null; 4349 byte buffer[] = new byte[1024]; 4350 int len; 4351 try { 4352 digest = MessageDigest.getInstance("MD5"); 4353 in = new FileInputStream(file); 4354 while ((len = in.read(buffer, 0, 1024)) != -1) { 4355 digest.update(buffer, 0, len); 4356 } 4357 in.close(); 4358 } catch (Exception e) { 4359 e.printStackTrace(); 4360 return null; 4361 } 4362 BigInteger bigInt = new BigInteger(1, digest.digest()); 4363 return bigInt.toString(16); 4364 } 4365 4366 99.计算获取文件夹中文件的MD5值 4367 /* 4368 import java.io.*; 4369 import java.math.*; 4370 import java.security.*; 4371 import java.util.*; 4372 */ 4373 public static String getFileMD5(File file) { 4374 if (!file.isFile()){ 4375 return null; 4376 } 4377 MessageDigest digest = null; 4378 FileInputStream in=null; 4379 byte buffer[] = new byte[1024]; 4380 int len; 4381 try { 4382 digest = MessageDigest.getInstance("MD5"); 4383 in = new FileInputStream(file); 4384 while ((len = in.read(buffer, 0, 1024)) != -1) { 4385 digest.update(buffer, 0, len); 4386 } 4387 in.close(); 4388 } catch (Exception e) { 4389 e.printStackTrace(); 4390 return null; 4391 } 4392 BigInteger bigInt = new BigInteger(1, digest.digest()); 4393 return bigInt.toString(16); 4394 } 4395 /** 4396 * 获取文件夹中文件的MD5值 4397 * @param file 4398 * @param listChild ;true递归子目录中的文件 4399 * @return 4400 */ 4401 public static Map<String, String> getDirMD5(File file,boolean listChild) { 4402 if(!file.isDirectory()){ 4403 return null; 4404 } 4405 //<filepath,md5> 4406 Map<String, String> map=new HashMap<String, String>(); 4407 String md5; 4408 File files[]=file.listFiles(); 4409 for(int i=0;i<files.length;i++){ 4410 File f=files[i]; 4411 if(f.isDirectory()&&listChild){ 4412 map.putAll(getDirMD5(f, listChild)); 4413 } else { 4414 md5=getFileMD5(f); 4415 if(md5!=null){ 4416 map.put(f.getPath(), md5); 4417 } 4418 } 4419 } 4420 return map; 4421 } 4422 getDirMD5(%%1,%%2); 4423 4424 100.复制一个目录下所有文件到一个文件夹中 4425 /* 4426 import java.io.*; 4427 import java.util.*; 4428 */ 4429 LinkedList<String> folderList = new LinkedList<String>(); 4430 folderList.add(%%1); 4431 LinkedList<String> folderList2 = new LinkedList<String>(); 4432 folderList2.add(%%2+ %%1.substring(%%1.lastIndexOf("\"))); 4433 while (folderList.size() > 0) { 4434 File folders = new File(folderList.peek()); 4435 String[] file = folders.list(); 4436 File temp = null; 4437 try { 4438 for (int i = 0; i < file.length; i++) { 4439 if (folderList.peek().endsWith(File.separator)) { 4440 temp = new File(folderList.peek() + File.separator 4441 + file[i]); 4442 } else { 4443 temp = new File(folderList.peek() + File.separator 4444 + file[i]); 4445 } 4446 if (temp.isFile()) { 4447 FileInputStream input = new FileInputStream(temp); 4448 FileOutputStream output = new FileOutputStream( 4449 new File(%%2,temp.getName())); 4450 byte[] b = new byte[10240]; 4451 int len; 4452 while ((len = input.read(b)) != -1) { 4453 output.write(b, 0, len); 4454 } 4455 output.flush(); 4456 output.close(); 4457 input.close(); 4458 } 4459 if (temp.isDirectory()) {// 如果是子文件夹 4460 for (File f : temp.listFiles()) { 4461 if (f.isDirectory()) { 4462 folderList.add(f.getPath()); 4463 folderList2.add(folderList2.peek() 4464 + File.separator + f.getName()); 4465 } 4466 } 4467 } 4468 } 4469 } catch (IOException e) { 4470 System.err.println("复制整个文件夹内容操作出错"); 4471 } 4472 folderList.removeFirst(); 4473 folderList2.removeFirst(); 4474 } 4475 4476 101.移动一个目录下所有文件到一个文件夹中 4477 /* 4478 import java.io.*; 4479 import java.util.*; 4480 */ 4481 LinkedList<String> folderList = new LinkedList<String>(); 4482 folderList.add(%%1); 4483 LinkedList<String> folderList2 = new LinkedList<String>(); 4484 folderList2.add(%%2 + %%1.substring(%%1.lastIndexOf("\"))); 4485 while (folderList.size() > 0) { 4486 File folders = new File(folderList.peek()); 4487 String[] file = folders.list(); 4488 File temp = null; 4489 try { 4490 for (int i = 0; i < file.length; i++) { 4491 if (folderList.peek().endsWith(File.separator)) { 4492 temp = new File(folderList.peek() + File.separator 4493 + file[i]); 4494 } else { 4495 temp = new File(folderList.peek() + File.separator 4496 + file[i]); 4497 } 4498 if (temp.isFile()) { 4499 FileInputStream input = new FileInputStream(temp); 4500 FileOutputStream output = new FileOutputStream( 4501 new File(%%2,temp.getName())); 4502 byte[] b = new byte[10240]; 4503 int len; 4504 while ((len = input.read(b)) != -1) { 4505 output.write(b, 0, len); 4506 } 4507 output.flush(); 4508 output.close(); 4509 input.close(); 4510 if (!temp.delete()) 4511 //删除单个文件操作出错 4512 } 4513 if (temp.isDirectory()) {// 如果是子文件夹 4514 for (File f : temp.listFiles()) { 4515 if (f.isDirectory()) { 4516 folderList.add(f.getPath()); 4517 folderList2.add(folderList2.peek() 4518 + File.separator + f.getName()); 4519 } 4520 } 4521 } 4522 } 4523 } catch (Exception e) { 4524 //复制整个文件夹内容操作出错 4525 e.printStackTrace(); 4526 } 4527 folderList.removeFirst(); 4528 folderList2.removeFirst(); 4529 } 4530 File f = new File(%%1); 4531 if (!f.delete()) { 4532 for (File file : f.listFiles()) { 4533 if (file.list().length == 0) { 4534 file.delete(); 4535 } 4536 } 4537 } 4538 4539 102.文件RSA高级加密 4540 /* 4541 import javax.crypto.*; 4542 import java.security.*; 4543 import java.security.spec.*; 4544 import java.security.interfaces.*; 4545 import java.io.*; 4546 import java.math.BigInteger; 4547 */ 4548 /** 4549 4550 * 生成密钥对 4551 4552 * @return KeyPair 4553 4554 * @throws EncryptException 4555 4556 */ 4557 4558 public static KeyPair generateKeyPair() throws EncryptException { 4559 4560 try { 4561 4562 KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA", 4563 4564 new org.bouncycastle.jce.provider.BouncyCastleProvider()); 4565 4566 final int KEY_SIZE = 1024;//没什么好说的了,这个值关系到块加密的大小,可以更改,但是不要太大,否则效率会低 4567 4568 keyPairGen.initialize(KEY_SIZE, new SecureRandom()); 4569 4570 KeyPair keyPair = keyPairGen.genKeyPair(); 4571 4572 return keyPair; 4573 4574 } catch (Exception e) { 4575 4576 throw new EncryptException(e.getMessage()); 4577 4578 } 4579 4580 } 4581 4582 /** 4583 4584 * 生成公钥 4585 4586 * @param modulus 4587 4588 * @param publicExponent 4589 4590 * @return RSAPublicKey 4591 4592 * @throws EncryptException 4593 4594 */ 4595 4596 public static RSAPublicKey generateRSAPublicKey(byte[] modulus, byte[] publicExponent) throws EncryptException { 4597 4598 KeyFactory keyFac = null; 4599 4600 try { 4601 4602 keyFac = KeyFactory.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider()); 4603 4604 } catch (NoSuchAlgorithmException ex) { 4605 4606 throw new EncryptException(ex.getMessage()); 4607 4608 } 4609 4610 RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(new BigInteger(modulus), new BigInteger(publicExponent)); 4611 4612 try { 4613 4614 return (RSAPublicKey) keyFac.generatePublic(pubKeySpec); 4615 4616 } catch (InvalidKeySpecException ex) { 4617 4618 throw new EncryptException(ex.getMessage()); 4619 4620 } 4621 4622 } 4623 /** 4624 4625 * 生成私钥 4626 4627 * @param modulus 4628 4629 * @param privateExponent 4630 4631 * @return RSAPrivateKey 4632 4633 * @throws EncryptException 4634 4635 */ 4636 4637 public static RSAPrivateKey generateRSAPrivateKey(byte[] modulus, byte[] privateExponent) throws EncryptException { 4638 4639 KeyFactory keyFac = null; 4640 4641 try { 4642 4643 keyFac = KeyFactory.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider()); 4644 4645 } catch (NoSuchAlgorithmException ex) { 4646 4647 throw new EncryptException(ex.getMessage()); 4648 4649 } 4650 4651 RSAPrivateKeySpec priKeySpec = new RSAPrivateKeySpec(new BigInteger(modulus), new BigInteger(privateExponent)); 4652 4653 try { 4654 4655 return (RSAPrivateKey) keyFac.generatePrivate(priKeySpec); 4656 4657 } catch (InvalidKeySpecException ex) { 4658 4659 throw new EncryptException(ex.getMessage()); 4660 4661 } 4662 4663 } 4664 4665 /** 4666 4667 * 加密 4668 4669 * @param key 加密的密钥 4670 4671 * @param data 待加密的明文数据 4672 4673 * @return 加密后的数据 4674 4675 * @throws EncryptException 4676 4677 */ 4678 4679 public static byte[] encrypt(Key key, byte[] data) throws EncryptException { 4680 4681 try { 4682 4683 Cipher cipher = Cipher.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider()); 4684 4685 cipher.init(Cipher.ENCRYPT_MODE, key); 4686 4687 int blockSize = cipher.getBlockSize();//获得加密块大小,如:加密前数据为128个byte,而key_size=1024 加密块大小为127 byte,加密后为128个byte;因此共有2个加密块,第一个127 byte第二个为1个byte 4688 4689 int outputSize = cipher.getOutputSize(data.length);//获得加密块加密后块大小 4690 4691 int leavedSize = data.length % blockSize; 4692 4693 int blocksSize = leavedSize != 0 ? data.length / blockSize + 1 : data.length / blockSize; 4694 4695 byte[] raw = new byte[outputSize * blocksSize]; 4696 4697 int i = 0; 4698 4699 while (data.length - i * blockSize > 0) { 4700 4701 if (data.length - i * blockSize > blockSize) 4702 4703 cipher.doFinal(data, i * blockSize, blockSize, raw, i * outputSize); 4704 4705 else 4706 4707 cipher.doFinal(data, i * blockSize, data.length - i * blockSize, raw, i * outputSize); 4708 //这里面doUpdate方法不可用,查看源代码后发现每次doUpdate后并没有什么实际动作除了把byte[]放到ByteArrayOutputStream中,而最后doFinal的时候才将所有的byte[]进行加密,可是到了此时加密块大小很可能已经超出了OutputSize所以只好用dofinal方法。 4709 4710 i++; 4711 4712 } 4713 4714 return raw; 4715 4716 } catch (Exception e) { 4717 4718 throw new EncryptException(e.getMessage()); 4719 4720 } 4721 4722 } 4723 4724 /** 4725 4726 * 解密 4727 4728 * @param key 解密的密钥 4729 4730 * @param raw 已经加密的数据 4731 4732 * @return 解密后的明文 4733 4734 * @throws EncryptException 4735 4736 */ 4737 4738 public static byte[] decrypt(Key key, byte[] raw) throws EncryptException { 4739 4740 try { 4741 4742 Cipher cipher = Cipher.getInstance("RSA", new org.bouncycastle.jce.provider.BouncyCastleProvider()); 4743 4744 cipher.init(cipher.DECRYPT_MODE, key); 4745 4746 int blockSize = cipher.getBlockSize(); 4747 4748 ByteArrayOutputStream bout = new ByteArrayOutputStream(64); 4749 4750 int j = 0; 4751 4752 while (raw.length - j * blockSize > 0) { 4753 4754 bout.write(cipher.doFinal(raw, j * blockSize, blockSize)); 4755 4756 j++; 4757 4758 } 4759 4760 return bout.toByteArray(); 4761 4762 } catch (Exception e) { 4763 4764 throw new EncryptException(e.getMessage()); 4765 4766 } 4767 4768 } 4769 4770 4771 File file = new File("test.html"); 4772 4773 FileInputStream in = new FileInputStream(file); 4774 4775 ByteArrayOutputStream bout = new ByteArrayOutputStream(); 4776 4777 byte[] tmpbuf = new byte[1024]; 4778 4779 int count = 0; 4780 4781 while ((count = in.read(tmpbuf)) != -1) { 4782 4783 bout.write(tmpbuf, 0, count); 4784 4785 tmpbuf = new byte[1024]; 4786 4787 } 4788 4789 in.close(); 4790 4791 byte[] orgData = bout.toByteArray(); 4792 4793 KeyPair keyPair = RSAUtil.generateKeyPair(); 4794 4795 RSAPublicKey pubKey = (RSAPublicKey) keyPair.getPublic(); 4796 4797 RSAPrivateKey priKey = (RSAPrivateKey) keyPair.getPrivate(); 4798 4799 byte[] pubModBytes = pubKey.getModulus().toByteArray(); 4800 4801 byte[] pubPubExpBytes = pubKey.getPublicExponent().toByteArray(); 4802 4803 byte[] priModBytes = priKey.getModulus().toByteArray(); 4804 4805 byte[] priPriExpBytes = priKey.getPrivateExponent().toByteArray(); 4806 4807 RSAPublicKey recoveryPubKey = RSAUtil.generateRSAPublicKey(pubModBytes,pubPubExpBytes); 4808 4809 RSAPrivateKey recoveryPriKey = RSAUtil.generateRSAPrivateKey(priModBytes,priPriExpBytes); 4810 4811 byte[] raw = RSAUtil.encrypt(priKey, orgData); 4812 4813 file = new File("encrypt_result.dat"); 4814 4815 OutputStream out = new FileOutputStream(file); 4816 4817 out.write(raw); 4818 4819 out.close(); 4820 4821 byte[] data = RSAUtil.decrypt(recoveryPubKey, raw); 4822 4823 file = new File("decrypt_result.html"); 4824 4825 out = new FileOutputStream(file); 4826 4827 out.write(data); 4828 4829 out.flush(); 4830 4831 out.close(); 4832 4833 103.计算文件大小 4834 /* 4835 import java.io.*; 4836 private final long KB=1024; 4837 private final long MB=1024*KB; 4838 private final long GB=1024*MB; 4839 */ 4840 //文件属性 4841 File file=new File(%%1); 4842 //如果文件存在而且是文件,直接返回文件大小 4843 if(file.exists()&&file.isFile()) 4844 { 4845 long filesize= file.length(); 4846 String showsize; 4847 if(filesize>=GB) 4848 showsize=filesize/GB+" GB"; 4849 else if(filesize>=MB) 4850 showsize=filesize/MB+" MB"; 4851 else if(filesize>=KB) 4852 showsize=filesize/KB+" KB"; 4853 else if(filesize>1) 4854 showsize=filesize/GB+" Bytes"; 4855 else 4856 showsize="1 Byte"; 4857 String %%2=showsize; 4858 } 4859 4860 104.计算文件夹的大小 4861 /* 4862 import java.io.*; 4863 import java.math.*; 4864 //bt字节参考量 4865 private static final long SIZE_BT=1024L; 4866 //KB字节参考量 4867 private static final long SIZE_KB=SIZE_BT*1024L; 4868 //MB字节参考量 4869 private static final long SIZE_MB=SIZE_KB*1024L; 4870 //GB字节参考量 4871 private static final long SIZE_GB=SIZE_MB*1024L; 4872 //TB字节参考量 4873 private static final long SIZE_TB=SIZE_GB*1024L; 4874 private static final int SACLE=2; 4875 //文件大小属性 4876 private static long longSize; 4877 */ 4878 private void getFileSize(File file) { 4879 // 获得文件目录下文件对象数组 4880 File[] fileArray = file.listFiles(); 4881 // 如果文件目录数组不为空或者length!=0,即目录为空目录 4882 if (fileArray != null && fileArray.length != 0) { 4883 // 遍历文件对象数组 4884 for (int i = 0; i < fileArray.length; i++) { 4885 File fileSI = fileArray[i]; 4886 // 如果是目录递归遍历 4887 if (fileSI.isDirectory()) { 4888 // 递归遍历 4889 getFileSize(fileSI); 4890 } 4891 // 如果是文件 4892 if (fileSI.isFile()) { 4893 longSize += fileSI.length(); 4894 } 4895 } 4896 } else { 4897 // 如果文件目录数组为空或者length==0,即目录为空目录 4898 longSize = 0; 4899 } 4900 } 4901 // 文件存在而且是目录,递归遍历文件目录计算文件大小 4902 File file = new File(folderPath); 4903 if (file.exists() && file.isDirectory()) { 4904 getFileSize(file);// 递归遍历 4905 } 4906 String %%2="0 Byte"; 4907 if (longSize == 1) { 4908 %%2="1 Byte"; 4909 } else if (longSize >= 2 && longSize < SIZE_BT) { 4910 %%2=longSize + " Bytes"; 4911 } else if (longSize >= SIZE_BT && longSize < SIZE_KB) { 4912 %%2=longSize / SIZE_BT + " KB"; 4913 } else if (longSize >= SIZE_KB && longSize < SIZE_MB) { 4914 %%2=longSize / SIZE_KB + " MB"; 4915 } else if (longSize >= SIZE_MB && longSize < SIZE_GB) { 4916 BigDecimal longs = new BigDecimal(Double.valueOf(longSize + "") 4917 .toString()); 4918 BigDecimal sizeMB = new BigDecimal(Double.valueOf(SIZE_MB + "") 4919 .toString()); 4920 String result = longs.divide(sizeMB, SACLE, 4921 BigDecimal.ROUND_HALF_UP).toString(); 4922 // double result=longSize/(double)SIZE_MB; 4923 %%2=result + " GB"; 4924 } else { 4925 BigDecimal longs = new BigDecimal(Double.valueOf(longSize + "") 4926 .toString()); 4927 BigDecimal sizeMB = new BigDecimal(Double.valueOf(SIZE_GB + "") 4928 .toString()); 4929 String result = longs.divide(sizeMB, SACLE, 4930 BigDecimal.ROUND_HALF_UP).toString(); 4931 %%2=result + " TB"; 4932 } 4933 4934 105.快速获得当前程序的驱动器、路径、文件名和扩展名 4935 String %%2=%%1.substring(0,%%1.lastIndexOf(":")); 4936 String %%5=%%1.substring(0,%%1.lastIndexOf("\")); 4937 String %%4=%%1.substring(%%1.lastIndexOf("\")+1); 4938 String %%3=%%1.substring(%%1.lastIndexOf('.')); 4939 4940 106.磁盘剩余空间计算 4941 //import java.io.*; 4942 File file = new File(%%1); //"C:" 4943 long %%2 = file.getFreeSpace(); //file.getTotalSpace() 4944 4945 107.获取当前程序进程ID 4946 java是在jvm上跑的,jvm本身作为系统的一个进程在跑, 4947 所以平时见到的都是java多线程,没有进程间通信, 4948 为什么呢,就是因为java中没有进程这一说法, 4949 除非指的是程序本身这个进程。这个进程的话需要用到系统命令或者底层c语言才能够得到。呃,本人jni不是太熟悉,可以参考 4950 http://hi.baidu.com/lff0305/blog/item/4f301a7b20d3d3f20bd187e3.html, 4951 linux下直接调用ps-ef再用管道提取吧。 4952 4953 108.全盘搜索文件 4954 import java.io.*; 4955 //ArrayList fileNames=new ArrayList(); 4956 void listDirectory(String dir) 4957 { 4958 File f=new File(dir); 4959 File[] files=f.listFiles(); 4960 if(files==null) 4961 return; 4962 for(int i=0;i<files.length;i++) 4963 { 4964 if(files[i].isDirectory()) 4965 { 4966 System.out.println("-----------"+files[i]+" is a directory has more files bellow:"); 4967 listDirectory(files[i].getAbsolutePath()); 4968 //listDirectory(files[i].getName()); 4969 //listDirectory(files[i].toString()); 4970 } 4971 4972 else 4973 { 4974 System.out.println(files[i]); 4975 } 4976 } 4977 } 4978 File[] roots=File.listRoots(); 4979 for(int i=0;i<roots.length;i++) 4980 { 4981 System.out.println(roots[i]); 4982 } 4983 } 4984 lrt.listDirectory("D:"+File.separator);