Java实现zip文件解压[到指定目录]

package com.ljheee.ziptool.core;  
  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.nio.charset.Charset;  
import java.util.Enumeration;  
import java.util.zip.ZipEntry;  
import java.util.zip.ZipFile;  
/** 
 * 实现文件[夹]解压 
 * @author ljheee 
 * 
 */  
public class UnZipFile {  
  
    /** 
     * 解压到指定目录 
     * @param zipPath   
     * @param descDir  
     */  
    public static void unZipFiles(String zipPath, String descDir) throws IOException {  
        unZipFiles(new File(zipPath), descDir);  
    }  
  
    /** 
     * 解压文件到指定目录 
     * 解压后的文件名,和之前一致 
     * @param zipFile   待解压的zip文件 
     * @param descDir   指定目录 
     */  
    @SuppressWarnings("rawtypes")  
    public static void unZipFiles(File zipFile, String descDir) throws IOException {  
          
        ZipFile zip = new ZipFile(zipFile,Charset.forName("GBK"));//解决中文文件夹乱码  
        String name = zip.getName().substring(zip.getName().lastIndexOf('\')+1, zip.getName().lastIndexOf('.'));  
          
        File pathFile = new File(descDir+name);  
        if (!pathFile.exists()) {  
            pathFile.mkdirs();  
        }  
          
        for (Enumeration<? extends ZipEntry> entries = zip.entries(); entries.hasMoreElements();) {  
            ZipEntry entry = (ZipEntry) entries.nextElement();  
            String zipEntryName = entry.getName();  
            InputStream in = zip.getInputStream(entry);  
            String outPath = (descDir + name +"/"+ 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);  
  
            FileOutputStream 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********************");  
        return;  
    }  
      
    //测试  
    public static void main(String[] args) {  
        try {  
            unZipFiles(new File("E:/Study/Java.zip"), "E:/Study/abc/");  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
  
}  

完整工程实现界面化,通过界面完成对文件的压缩和解压,如下图:

完整工程:https://github.com/ljheee/MyZip1.0

转载于:https://my.oschina.net/u/2436852/blog/1553258

原文地址:https://www.cnblogs.com/twodog/p/12139156.html