package com.spring.mvc.zip;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;

import org.apache.tools.zip.ZipFile;

public class zip {

/**
* 解压到指定目录
* @param zipPath
* @param descDir
* @author isea533
*/
public static void unZipFiles(String zipPath,String descDir)throws Exception{
unZipFiles(new File(zipPath), descDir);
}
/**
* 解压文件到指定目录
* @param zipFile
* @param descDir
* @author isea533
*/
@SuppressWarnings("rawtypes")
public static void unZipFiles(File zipFile,String descDir)throws Exception{
File pathFile = new File(descDir);
if(!pathFile.exists()){
pathFile.mkdirs();
}
ZipFile zip = new ZipFile(zipFile,"gbk");
for(Enumeration entries = zip.getEntries();entries.hasMoreElements();){
ZipEntry entry = (ZipEntry)entries.nextElement();
String zipEntryName = entry.getName();
InputStream in = zip.getInputStream((org.apache.tools.zip.ZipEntry) entry);
String outPath = (descDir+zipEntryName).replaceAll("\\*", "/");;
//判断路径是否存在,不存在则创建文件路径
File file = new File(outPath.substring(0, outPath.lastIndexOf(‘/‘)));
if(!file.exists()){
file.mkdirs();
}
//判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
if(new File(outPath).isDirectory()){
continue;
}
//输出文件路径信息
System.out.println(outPath);

OutputStream out = new FileOutputStream(outPath);
byte[] buf1 = new byte[1024];
int len;
while((len=in.read(buf1))>0){
out.write(buf1,0,len);
}
in.close();
out.close();
}
System.out.println("******************解压完毕********************");
}

public static void main(String[] args) throws Exception {

/**
* 解压文件
*/
File zipFile = new File("d://zhouzhiwei.zip"); //压缩包地址
String path = "d://zipfile/"; //被解压到这个路径
unZipFiles(zipFile, path);
}
}

java解压zip压缩包