[导入]使用org.apache.tools.zip实现zip压缩和解压

yt-summer

importjava.io.*;
importorg.apache.tools.zip.*;
importjava.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 ... 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"
*/

publicclassAntZip{
    privateZipFile         zipFile;
    privateZipOutputStream zipOut;     //压缩Zip
    privateZipEntry        zipEntry;
    privatestaticint      bufSize;    //size of bytes
    privatebyte[]          buf;
    privateint             readedBytes;
    
    publicAntZip(){
        this(512);
    }

    publicAntZip(intbufSize){
        this.bufSize = bufSize;
        this.buf = newbyte[this.bufSize];
    }
    
    //压缩文件夹内的文件
    publicvoiddoZip(String zipDirectory){//zipDirectoryPath:需要压缩的文件夹名
        File file;
        File zipDir;

        zipDir = newFile(zipDirectory);
        String zipFileName = zipDir.getName() + ".zip";//压缩后生成的zip文件名

        try{
            this.zipOut = newZipOutputStream(newBufferedOutputStream(newFileOutputStream(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
    privatevoidhandleDir(File dir , ZipOutputStream zipOut)throwsIOException{
        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(newZipEntry(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 = newFileInputStream(fileName);
                    this.zipOut.putNextEntry(newZipEntry(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
    publicvoidunZip(String unZipfileName){//unZipfileName需要解压的zip文件名
        FileOutputStream fileOut;
        File file;
        InputStream inputStream;

        try{
            this.zipFile = newZipFile(unZipfileName);

            for(Enumeration entries = this.zipFile.getEntries(); entries.hasMoreElements();){
                ZipEntry entry = (ZipEntry)entries.nextElement();
                file = newFile(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 = newFileOutputStream(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
    publicvoidsetBufSize(intbufSize){
        this.bufSize = bufSize;
    }

    //测试AntZip类
    publicstaticvoidmain(String[] args)throwsException{
        if(args.length==2){
            String name = args[1];
            AntZip zip = newAntZip();

            if(args[0].equals("-zip"))
                zip.doZip(name);
            elseif(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");
            thrownewException("Arguments error!");
        }
    }
}

　　
文章来源:http://wintys.blog.iyunv.com/425414/90878