Java实现解压zip

方式一：

package com.lanyuan.assembly.util;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
/** 
 * 解压Zip文件工具类 
 * @author zhangyongbo 
 * 
 */
public class ZipUtil
{
  private static final int buffer = 2048; 
 /** 
  * 解压Zip文件 
  * @param path 文件目录 
  */
 public static void unZip(String path) 
   { 
    int count = -1; 
    String savepath = ""; 
    File file = null; 
    InputStream is = null; 
    FileOutputStream fos = null; 
    BufferedOutputStream bos = null; 
    savepath = path.substring(0, path.lastIndexOf(".")) + File.separator; //保存解压文件目录 
    new File(savepath).mkdir(); //创建保存目录 
    ZipFile zipFile = null; 
    try
    { 
      zipFile = new ZipFile(path,"gbk"); //解决中文乱码问题 
      Enumeration<?> entries = zipFile.getEntries(); 
      while(entries.hasMoreElements()) 
      { 
        byte buf[] = new byte[buffer]; 
        ZipEntry entry = (ZipEntry)entries.nextElement(); 
        String filename = entry.getName(); 
        boolean ismkdir = false; 
        if(filename.lastIndexOf("/") != -1){ //检查此文件是否带有文件夹 
         ismkdir = true; 
        } 
        filename = savepath + filename; 
        if(entry.isDirectory()){ //如果是文件夹先创建 
         file = new File(filename); 
         file.mkdirs(); 
          continue; 
        } 
        file = new File(filename); 
        if(!file.exists()){ //如果是目录先创建 
         if(ismkdir){ 
         new File(filename.substring(0, filename.lastIndexOf("/"))).mkdirs(); //目录先创建 
         } 
        } 
        file.createNewFile(); //创建文件 
        is = zipFile.getInputStream(entry); 
        fos = new FileOutputStream(file); 
        bos = new BufferedOutputStream(fos, buffer); 
        while((count = is.read(buf)) > -1) 
        { 
          bos.write(buf, 0, count); 
        } 
        bos.flush(); 
        bos.close(); 
        fos.close(); 
        is.close(); 
      } 
      zipFile.close(); 
    }catch(IOException ioe){ 
      ioe.printStackTrace(); 
    }finally{ 
       try{ 
       if(bos != null){ 
         bos.close(); 
       } 
       if(fos != null) { 
         fos.close(); 
       } 
       if(is != null){ 
         is.close(); 
       } 
       if(zipFile != null){ 
         zipFile.close(); 
       } 
       }catch(Exception e) { 
         e.printStackTrace(); 
       } 
     } 
   } 
/*public static void main(String[] args) 
  { 
    unZip("F:\110000002.zip"); 
    String f = "F:\110000002";
    File file = new File(f);
    String[] test=file.list();
    for(int i=0;i<test.length;i++){
      System.out.println(test[i]);
    }
    System.out.println("------------------");
    String fileName = "";
    File[] tempList = file.listFiles();
    for (int i = 0; i < tempList.length; i++) {
      if (tempList[i].isFile()) {
        System.out.println("文   件："+tempList[i]);
        fileName = tempList[i].getName();
        System.out.println("文件名："+fileName);
      }
      if (tempList[i].isDirectory()) {
        System.out.println("文件夹："+tempList[i]);
      }
    }
  } */
}

方式二：

import java.io.*;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
 * Created by wzj on 2016/9/9.
 */
public class UZipFile
{
  /**
   * 解压到指定目录
   */
  public static void unZipFiles(String zipPath,String descDir)throws IOException
  {
    unZipFiles(new File(zipPath), descDir);
  }
  /**
   * 解压文件到指定目录
   */
  @SuppressWarnings("rawtypes")
  public static void unZipFiles(File zipFile,String descDir)throws IOException
  {
    File pathFile = new File(descDir);
    if(!pathFile.exists())
    {
      pathFile.mkdirs();
    }
    //解决zip文件中有中文目录或者中文文件
    ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"));
    for(Enumeration entries = zip.entries(); entries.hasMoreElements();)
    {
      ZipEntry entry = (ZipEntry)entries.nextElement();
      String zipEntryName = entry.getName();
      InputStream in = zip.getInputStream(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 IOException {
    /**
     * 解压文件
     */
    File zipFile = new File("d:/资料.zip");
    String path = "d:/zipfile/";
    unZipFiles(zipFile, path);
  }
}

转载自：https://www.jb51.net/article/127844.htm