java 使用org.apache.tools.zip实现zip压缩和解压
压缩[*]import java.io.*;
[*]import org.apache.tools.zip.*;
[*]import java.util.Enumeration;
[*]/**
[*]*功能:zip压缩、解压(支持中文文件名)
[*]*说明:本程序通过使用Apache Ant里提供的zip工具org.apache.tools.zip实现了zip压缩和解压功能.
[*]* 解决了由于java.util.zip包不支持汉字的问题。
[*]* 使用java.util.zip包时,当zip文件中有名字为中文的文件时,
[*]* 就会出现异常:"Exception in thread "main " java.lang.IllegalArgumentException
[*]* at java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:285)
[*]*注意:
[*]* 1、使用时把ant.jar放到classpath中,程序中使用import org.apache.tools.zip.*;
[*]* 2、Apache Ant 下载地址:http://ant.apache.org/
[*]* 3、Ant ZIPAPI:http://www.jajakarta.org/ant/ant ... g/apache/tools/zip/
[*]* 4、本程序使用Ant 1.7.1 中的ant.jar
[*]*
[*]*仅供编程学习参考.
[*]*
[*]*@author Winty
[*]*@date 2008-8-3
[*]*@Usage:
[*]* 压缩:java AntZip -zip "directoryName"
[*]* 解压:java AntZip -unzip "fileName.zip"
[*]*/
[*]
[*]public class AntZip{
[*]private ZipFile zipFile;
[*]private ZipOutputStream zipOut;//压缩Zip
[*]private ZipEntry zipEntry;
[*]private static int bufSize;//size of bytes
[*]private byte[] buf;
[*]private int readedBytes;
[*]
[*]public AntZip(){
[*]this(512);
[*]}
[*]
[*]public AntZip(int bufSize){
[*]this.bufSize = bufSize;
[*]this.buf = new byte;
[*]}
[*]
[*]//压缩文件夹内的文件
[*]public void doZip(String zipDirectory){//zipDirectoryPath:需要压缩的文件夹名
[*]File file;
[*]File zipDir;
[*]
[*]zipDir = new File(zipDirectory);
[*]String zipFileName = zipDir.getName() + ".zip";//压缩后生成的zip文件名
[*]
[*]try{
[*]this.zipOut = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFileName)));
[*]handleDir(zipDir , this.zipOut);
[*]this.zipOut.close();
[*]}catch(IOException ioe){
[*]ioe.printStackTrace();
[*]}
[*]}
[*]
[*]//由doZip调用,递归完成目录文件读取
[*]private void handleDir(File dir , ZipOutputStream zipOut)throws IOException{
[*]FileInputStream fileIn;
[*]File[] files;
[*]
[*]files = dir.listFiles();
[*]
[*]if(files.length == 0){//如果目录为空,则单独创建之.
[*]//ZipEntry的isDirectory()方法中,目录以"/"结尾.
[*]this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/"));
[*]this.zipOut.closeEntry();
[*]}
[*]else{//如果目录不为空,则分别处理目录和文件.
[*]for(File fileName : files){
[*]//System.out.println(fileName);
[*]
[*]if(fileName.isDirectory()){
[*]handleDir(fileName , this.zipOut);
[*]}
[*]else{
[*]fileIn = new FileInputStream(fileName);
[*]this.zipOut.putNextEntry(new ZipEntry(fileName.toString()));
[*]
[*]while((this.readedBytes = fileIn.read(this.buf))>0){
[*]this.zipOut.write(this.buf , 0 , this.readedBytes);
[*]}
[*]
[*]this.zipOut.closeEntry();
[*]}
[*]}
[*]}
[*]}
[*]
[*]//解压指定zip文件
[*]public void unZip(String unZipfileName){//unZipfileName需要解压的zip文件名
[*]FileOutputStream fileOut;
[*]File file;
[*]InputStream inputStream;
[*]
[*]try{
[*]this.zipFile = new ZipFile(unZipfileName);
[*]
[*]for(Enumeration entries = this.zipFile.getEntries(); entries.hasMoreElements();){
[*]ZipEntry entry = (ZipEntry)entries.nextElement();
[*]file = new File(entry.getName());
[*]
[*]if(entry.isDirectory()){
[*]file.mkdirs();
[*]}
[*]else{
[*]//如果指定文件的目录不存在,则创建之.
[*]File parent = file.getParentFile();
[*]if(!parent.exists()){
[*]parent.mkdirs();
[*]}
[*]
[*]inputStream = zipFile.getInputStream(entry);
[*]
[*]fileOut = new FileOutputStream(file);
[*]while(( this.readedBytes = inputStream.read(this.buf) ) > 0){
[*]fileOut.write(this.buf , 0 , this.readedBytes );
[*]}
[*]fileOut.close();
[*]
[*]inputStream.close();
[*]}
[*]}
[*]this.zipFile.close();
[*]}catch(IOException ioe){
[*]ioe.printStackTrace();
[*]}
[*]}
[*]
[*]//设置缓冲区大小
[*]public void setBufSize(int bufSize){
[*]this.bufSize = bufSize;
[*]}
[*]
[*]//测试AntZip类
[*]public static void main(String[] args)throws Exception{
[*]if(args.length==2){
[*]String name = args;
[*]AntZip zip = new AntZip();
[*]
[*]if(args.equals("-zip"))
[*]zip.doZip(name);
[*]else if(args.equals("-unzip"))
[*]zip.unZip(name);
[*]}
[*]else{
[*]System.out.println("Usage:");
[*]System.out.println("压缩:java AntZip -zip directoryName");
[*]System.out.println("解压:java AntZip -unzip fileName.zip");
[*]throw new Exception("Arguments error!");
[*]}
[*]}
[*]}
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