[导入]使用org.apache.tools.zip实现zip压缩和解压
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-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"
*/
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;
AntZip zip = newAntZip();
if(args.equals("-zip"))
zip.doZip(name);
elseif(args.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
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