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:[url]http://ant.apache.org/[/url] 
*   3、Ant ZIP API:[url]http://www.jajakarta.org/ant/ant-1.6.1/docs/mix/manual/api/org/apache/tools/zip/[/url] 
*   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!"); 
        } 
    } 
}