使用org.apache.tools.zip实现zip压缩和解压

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 ZIP API:http://www.jajakarta.org/ant/ant-1.6.1/docs/mix/manual/api/org/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[this.bufSize]; 

    } 

     

    //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[1]; 

            AntZip zip = new AntZip(); 

            if(args[0].equals("-zip")) 

                zip.doZip(name); 

            else if(args[0].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!"); 

        } 

    } 

}