Java解压Zip文件实战-优快云博客

近日,在别的Java论坛上看到有人贴出的Java解压Zip的源码，据说是有问题，小弟昨日小做测试，没有问题.

现在,我贴出经过测试后的源码供大家研究学习:

package com.hand;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class Zip {

/**
* @param args
*/
public static int iCompressLevel; //压缩比取值范围为0~9
public static boolean bOverWrite; //是否覆盖同名文件取值范围为True和False
private static ArrayList allFiles = new ArrayList();
public static String sErrorMessage;
public static ArrayList Ectract(String sZipPathFile, String sDestPath){
  ArrayList allFileName = new ArrayList();
  try{
   //先指定压缩档的位置和档名，建立FileInputStream对象
   FileInputStream fins = new FileInputStream(sZipPathFile);
   //将fins传入ZipInputStream中
   ZipInputStream zins = new ZipInputStream(fins);
   ZipEntry ze = null;
   byte ch[] = new byte[256];
   while((ze = zins.getNextEntry()) != null){
    File zfile = new File(sDestPath + ze.getName());
    File fpath = new File(zfile.getParentFile().getPath());
    if(ze.isDirectory()){
     if(!zfile.exists())
      zfile.mkdirs();
     zins.closeEntry();
    }else{
     if(!fpath.exists())
      fpath.mkdirs();
     FileOutputStream fouts = new FileOutputStream(zfile);
     int i;
     allFileName.add(zfile.getAbsolutePath());
     while((i = zins.read(ch)) != -1)
      fouts.write(ch,0,i);
     zins.closeEntry();
     fouts.close();
    }
   }
   fins.close();
   zins.close();
   sErrorMessage = "OK";
  }catch(Exception e){
   System.err.println("Extract error:" + e.getMessage());
   sErrorMessage = e.getMessage();
  }
  allFiles.clear();
  return allFileName;
}

public static void main(String[] args) {
  // TODO Auto-generated method stub
  Zip z = new Zip();
  ArrayList a = new ArrayList();
  a = z.Ectract("c:\\src.zip", "c:\\");
  System.out.println(a.size());
}

}

注: 解压C盘根目录下文件src.zip到C盘根目录.

另:附录一将一个字符串分割为子字符串，然后将结果作为字符串数组返回的有用的Java程序.关于split()方法的使用

package com.hand.tools;

public class SplitDemo {

public static String[] ss = new String[20];
public SplitDemo(){
  String s = "The test in String start action success";
  //在每个空格字符处进行分解
  ss = s.split(" ");
}

/**
* @param args
* 将一个字符串分割为子字符串，然后将结果作为字符串数组返回。
* java.lang.string.split
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  SplitDemo demo = new SplitDemo();
  System.out.println("test the length="+ss.length);
  for(int i=0; i < ss.length; i++){
   System.out.println(ss[i]);
  }
  System.out.println("the last element is : "+ ss[6]);
}

}

运行返回结果:

test the length=7
The
test
in
String
start
action
success
the last element is : success