Java文件压缩

package com.woxiaoe.study.io;

 

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.zip.Adler32;

import java.util.zip.CheckedOutputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

 

/**

 * 文件压缩

 * @author 小e

 *

 * 2010-5-23 下午09:24:31

 */

public class FileCompress {

public static void compress(String dest,File...files){

FileOutputStream fos = null;

CheckedOutputStream cos = null;

ZipOutputStream zos = null;

BufferedOutputStream bos = null;

try {

fos = new FileOutputStream(dest);

cos = new CheckedOutputStream(fos, new Adler32());

zos = new ZipOutputStream(cos);

bos = new BufferedOutputStream(zos);

// org.apache.tools.zip setEncoding(...) 

zos.setComment("文件压缩测试");

for(File file : files){

BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

zos.putNextEntry(new ZipEntry(file.getName()));

int len;

byte[] buf = new byte[1024];

while((len = bis.read(buf)) != -1){

bos.write(buf, 0, len);

}

bis.close();

bos.flush();

}

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}finally{

if(bos != null){

try {

bos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

if(zos != null){

try {

zos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

if(cos != null){

try {

cos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

if(fos != null){

try {

fos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

 

}