import java.io.*;
import java.util.zip.*;
/** *//**
*功能:zip壓縮、解壓
*說明:本程序通過ZipOutputStream和ZipInputStream實現了zip壓縮和解壓功能.
*問題:由於java.util.zip包並不支持漢字,當zip文件中有名字為中文的文件時
, author by http://www.bt285.cn http://www.5a520.cn
* 就會出現異常:"Exception in thread "main " java.lang.IllegalArgumentExceptionBR> * at java.util.zip.ZipInputStream.getUTF8String (ZipInputStream.java:285)
*解決:
* 方法1、修改import java.util.zip.ZipInputStream和ZipOutputStream.
* java.util.zip只支持UTF-8,Ant裡面可以指定編碼.
* 方法2、使用Apache Ant裡提供的zip工具。
* 不使用java.util.zip的包,把ant.jar放到classpath中.
* 程序中使用import org.apache.tools.zip.*;
*
*僅供編程學習參考.
*
*@author Winty
*@date 2008-8-3
*@Usage:
* 壓縮:java Zip -zip "directoryName"
* 解壓:java Zip -unzip "fileName.zip"
*/
public class Zip{
private ZipInputStream zipIn; //解壓Zip
private ZipOutputStream zipOut; //壓縮Zip
private ZipEntry zipEntry;
private static int bufSize; //size of bytes
private byte[] buf;
private int readedBytes;
public Zip(){
this(512);
}
public Zip(int bufSize){
this.bufSize = bufSize;
this.buf = new byte[this.bufSize];
}
//壓縮文件夾內的文件
public void doZip(String zipDirectory){//zipDirectoryPath:需要壓縮的文件夾名
File file;
File zipDir;
zipDir = new File(zipDirectory);
String zipFileName = zipDir.getName() + ".zip";//壓縮後生成的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調用,遞歸完成目錄文件讀取
private void handleDir(File dir , ZipOutputStream zipOut)throws IOException{
FileInputStream fileIn;
File[] files;
files = dir.listFiles();
if(files.length == 0){//如果目錄為空,則單獨創建之.
//ZipEntry的isDirectory()方法中,目錄以"/"結尾.
this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/"));
this.zipOut.closeEntry();
}
else{//如果目錄不為空,則分別處理目錄和文件.
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();
}
}
}
}
//解壓指定zip文件
public void unZip(String unZipfileName){//unZipfileName需要解壓的zip文件名
FileOutputStream fileOut;
File file;
try{
this.zipIn = new ZipInputStream (new BufferedInputStream(new FileInputStream(unZipfileName)));
while((this.zipEntry = this.zipIn.getNextEntry()) != null){
file = new File(this.zipEntry.getName());
//System.out.println(file);///
if(this.zipEntry.isDirectory()){
file.mkdirs();
}
else{
//如果指定文件的目錄不存在,則創建之.
File parent = file.getParentFile();
if(!parent.exists()){
parent.mkdirs();
}
fileOut = new FileOutputStream(file);
while(( this.readedBytes = this.zipIn.read(this.buf) ) > 0){
fileOut.write(this.buf , 0 , this.readedBytes );
}
fileOut.close();
}
this.zipIn.closeEntry();
}
}catch(IOException ioe){
ioe.printStackTrace();
}
}
//設置緩沖區大小
public void setBufSize(int bufSize){
this.bufSize = bufSize;
}
//測試Zip類
public static void main(String[] args)throws Exception{
if(args.length==2){
String name = args[1];
Zip zip = new Zip();
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("壓縮:java Zip -zip http://www.bt285.cn /directoryName");
System.out.println("解壓:java Zip -unzip http://www.feng123.com /fileName.zip");
throw new Exception("Arguments error!");
}
}
}