复制:
/** * 图片复制 * @param source xx/a.png * @param target xx/b.png * @throws IOException */ public static void copyPicture(String source,String target) throws IOException{ File file = new File(target); if(!file.exists()){ file.getParentFile().mkdirs(); } file.createNewFile(); //创建流对象 DataInputStream dis=new DataInputStream(new FileInputStream(source)); DataOutputStream dos=new DataOutputStream(new FileOutputStream(target)); int temp; //读写数据 while((temp=dis.read())!=-1){//读数据 dos.write(temp); } //关闭流 dis.close(); dos.close(); }
压缩 zip
package zip; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; // Used to zip a file public class FileZipper { private static final int BUFFER = 512; public boolean compressFilesToZip(String[] files,String zipfile) { return rugularZip(files,zipfile); } private boolean rugularZip(String[] fromFiles,String toFile) { File zipFile=new File(toFile); byte[] buffer=new byte[BUFFER]; int readLen=0; try { ZipOutputStream zipOut=new ZipOutputStream(new FileOutputStream(zipFile)) ; int index=0; for(String file:fromFiles) { File fileWillZip=new File(file); if(fileWillZip.exists()) { InputStream inputStream=new BufferedInputStream(new FileInputStream(fileWillZip)); String entryName="#"+index+"_"+fileWillZip.getName();// entryName should be a valid filename,no path seperater allowed zipOut.putNextEntry(new ZipEntry(entryName)); while((readLen=inputStream.read(buffer,0,BUFFER))!=-1) { zipOut.write(buffer,0,readLen); } inputStream.close(); index++; } } zipOut.close(); }catch(Exception e) { e.printStackTrace(); return false; } return true; } public static void main(String[] args) { String[] files= {"D:\wallpaper\5760666873360998521.jpg", "D:\wallpaper\luda1.jpg", "D:\wallpaper\luda2.jpg", "D:\wallpaper\luda3.jpg", "D:\wallpaper\luda4.jpg", "D:\wallpaper\sheeps.jpg"}; String zipfile="D:\wallpaper\result.zip"; FileZipper fz=new FileZipper(); fz.compressFilesToZip(files, zipfile); } }
此文进阶请见:https://www.cnblogs.com/xiandedanteng/p/12155957.html