use strict;
use IO::Dir;
use Data::Dumper;

decompile(".");

sub decompile() {
  my ($base) = @_;  
  my $dir;
  tie %$dir, "IO::Dir", $base;
  foreach (keys %$dir) {
    my $f = $base."\\".$_;    
    if(-d $f) { #是目录
      if ( ($_ ne '.') && ($_ ne '..') ) {        
        #print "$f\n";
        decompile($f);
      }
    }      
    else { 
      my $pos = rindex($_ ,'.');
      my $filename = substr($_,0,$pos);
      my $ext      = substr($_,$pos+1);      
      if( $ext eq 'class' ) { #是类文件
         print $f,"\n";
         #print $base."\\$filename.java\n";
         `e:\\tools\\jad\\jad -noctor -space -t -i -radix10 -lradix10 -d $base $f`;         
      }
    }  
  }  
}

rainman wrote:
呵呵，不知道啊。

package org.fsword.util;

import java.util.*;
import java.util.zip.*;
import java.util.jar.*;
import java.io.*;

public class JarTool{
    
    String targetStr = "";
    
    private void execute(){
        String jarFileStr = "C:\\javasoft\\jdk1.3.1\\lib\\dt.jar";
        execute(jarFileStr);
    }

    private void execute(String jarFileStr){
        String classFileOutDirStr = "C:\\temp";
        execute(jarFileStr,classFileOutDirStr);
    }

    private void execute(String jarFileStr,String classFileOutDirStr){
        String jadFileStr = "C:\\javasoft\\jad\\jad.exe";
        execute(jarFileStr,classFileOutDirStr,jadFileStr);
    }

    JarTool(){
        execute();
    }

    JarTool(String jarFileStr){
        execute(jarFileStr);
    }

    JarTool(String jarFileStr,String classFileOutDirStr){
        execute(jarFileStr,classFileOutDirStr);
    }

    JarTool(String jarFileStr,String classFileOutDirStr,String jadFileStr){
        execute(jarFileStr,classFileOutDirStr,jadFileStr);
    }

    private void execute(String jarFileStr,String classFileOutDirStr,String jadFileStr){
        try{
            Vector vts = new Vector();
            JarFile jarFile = new JarFile(jarFileStr);
            Enumeration enu;
            ZipEntry entryTemp;
            BufferedInputStream in;
            FileOutputStream fo;
            int i=0;
            enu = jarFile.entries();
            while(enu.hasMoreElements()){
                String entryName = enu.nextElement().toString();
                if(entryName.endsWith(".class")){
                    in= new BufferedInputStream(jarFile.getInputStream(jarFile.getEntry(entryName)));
                    String foName = classFileOutDirStr + "\\" + entryName.replace('/','\\');
                    File nDir = new File(foName);
                    nDir.getParentFile().mkdirs();
                    fo = new FileOutputStream(foName);
                    do{
                        fo.write(in.read());
                    }while(in.available()>0);
                    fo.close();
                    vts.add(i++,foName);
                }
            }

            System.out.println(vts.size());
            Runtime rt = Runtime.getRuntime();
            for(i=0; i<vts.size(); i++){
                rt.exec(jadFileStr + " -s java -r -f -o " + vts.get(i).toString(););
            }
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }
    
    public static void main(String[] str){
        JarTool jt;
        switch (str.length) {
            case 1:jt = new JarTool(str[0]); break;
            case 2:jt = new JarTool(str[0],str[1]); break;
            default : System.out.println("usage: java org.fsword.util.JarTool JarFileFullPath ClassOutputPath");
        }
    }
}