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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
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