【转载】用java压缩文件夹/文件

压缩文件夹代码：

import java.io.File;
import org.apache.tools.zip.ZipOutputStream; //这个包在ant.jar里，要到官方网下载
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipEntry;

public class CompressBook {

/**//*
* inputFileName 输入一个文件夹
* zipFileName 输出一个压缩文件夹
*/
public void zip(String inputFileName) throws Exception {
    String zipFileName = "C:\\temp\\"; //打包后文件名字
    if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println(zipFileName);
    zip(zipFileName, new File(inputFileName));
}
public void zipOfName(String inputFileName,String zipFileName) throws Exception {
    zip(zipFileName, new File(inputFileName));
}

private void zip(String zipFileName, File inputFile) throws Exception {
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
    zip(out, inputFile, "");
    if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println("zip done");
    out.close();
}

private void zip(ZipOutputStream out, File f, String base) throws Exception {
    if (f.isDirectory()) {
       File[] fl = f.listFiles();
       out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + "/"));
       base = base.length() == 0 ? "" : base + "/";
       for (int i = 0; i < fl.length; i++) {
       zip(out, fl[i], base + fl[i].getName());
     }
    }else {
       out.putNextEntry(new org.apache.tools.zip.ZipEntry(base));
       FileInputStream in = new FileInputStream(f);
       int b;
       if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println(base);
       while ( (b = in.read()) != -1) {
        out.write(b);
     }
     in.close();
   }
}

public static void main(String [] temp){
    CompressBook book = new CompressBook();
    try {
      // book.zip("E:\\temp\\pes\\temp\\115411B78AF6F2CDD513393FB8F0A8C6");//你要压缩的文件夹
    }catch (Exception ex) {
       ex.printStackTrace();
   }
}
}

文件压缩

 

import java.io.*;
import java.util.zip.*;//ZipOutputStream这个流在这里
import java.util.*;

public class ZipOutputStreamTest
{
     public static void main(String[] args) throws Exception
     {
       File f = new File("a.jpg");
       FileInputStream fis = new FileInputStream(f);
       BufferedInputStream bis = new BufferedInputStream(fis);
       byte[] buf = new byte[1024];
       int len;
       FileOutputStream fos = new FileOutputStream(f.getName()+".zip");
       BufferedOutputStream bos = new BufferedOutputStream(fos);
       ZipOutputStream zos = new ZipOutputStream(bos);//压缩包
       ZipEntry ze = new ZipEntry(f.getName());//这是压缩包名里的文件名
       zos.putNextEntry(ze);//写入新的 ZIP 文件条目并将流定位到条目数据的开始处

       while((len=bis.read(buf))!=-1)
       {
          zos.write(buf,0,len);
          zos.flush();
       }
       bis.close();
       zos.close(); 
     }
}