java 使用org.apache.tools.zip实现zip压缩和解压

yanfangsheng123

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[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!"); } } } [color=#0099CC!important]复制代码