java实现可自己添加文件或文件夹的压缩(转)

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.Vector;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
 

/**
 * 压缩文件类，支持添加文件或文件夹
 * @author Teddy
 *
 */
public class ZipUtil {
 
 /*存放添加的文件集合*/
 private static Vector files = new Vector();
 /*存放所有文件的集合*/
 private static Vector all_files = new Vector();

 
 /**
  * 功能:
     * @param args
     */
    public static void main(String[] args) {
     long a = System.currentTimeMillis();
     System.out.println("开始压缩文件");
     ZipUtil zip = new ZipUtil();
     File f1 = new File("g:\\zip_test\\sogou_pinyin_52c.exe");
     zip.addFile(f1);
     zip.addFile(new File("g:\\xiahps\\主题\\note.Gadget"));
     File ff [] = zip.getListFiles();    
     zip.zipFiles(ff, new File("g:\\abc.zip"), "g:\\");   
     zip.clear();
     long b = System.currentTimeMillis()-a;
     System.out.println("压缩完毕！耗时："+(double)b/1000+"秒");
     System.out.println("开始解压文件");
     zip.unZipFiles("g:\\abc.zip","g:\\zzw");
     long c = System.currentTimeMillis()-a;
     System.out.println("解压完毕！总耗时："+(double)c/1000+"秒");
    }

    
    public ZipUtil(){}
    /**
     * 添加待压缩的文件(支持添加文件夹)
     * @param f
     */
    public static void addFile(File f){
     if(f==null||!f.exists())return;
     if(!files.contains(f)) files.addElement(f);
    }
    
    /**
     * 获取文件列表
     * @return
     */
    public static File [] getListFiles(){
     File list_files [] = null;
     if(files==null||files.size()==0)return null;
     for(int i=0;i<files.size();i++){
      File f = (File)files.get(i);
      refreshFileList(f.getAbsolutePath());
     }
     list_files = new File[all_files.size()];
     for(int i=0;i<all_files.size();i++){      
      list_files[i] = (File)all_files.elementAt(i);
     }
     return list_files;
    }
    
 /**
  * 装载一个目录或文件
  * @param strPath
  */
 public static void refreshFileList(String strPath) { 
  File dir = new File(strPath); 
  //是文件直接装载
  if(dir!=null&&dir.isFile()){all_files.add(dir);return;}
  File[] ff = dir.listFiles(); 
  if (ff == null) 
   return; 
  for (int i = 0; i < ff.length; i++) { 
   if (ff[i].isDirectory()) { 
    refreshFileList(ff[i].getAbsolutePath()); 
   } else { 
    String strFileName = ff[i].getAbsolutePath().toLowerCase();  
    if(!all_files.contains(strFileName))
     all_files.add(ff[i]);
   }
  } 
 }

 
 /**
  * 不替换路径的压缩
  * @param srcfile
  * @param zipfile
  */
 public static void zipFiles(File[] srcfile,File zipfile){
  zipFiles(srcfile,zipfile,null);
 }
 
    /**
     * 功能:压缩多个文件或文件夹成一个zip文件
     * @param srcfile：源文件列表
     * @param zipfile：压缩后的文件
     * @param repstr：绝对路径替换
     */
    public static void zipFiles(File[] srcfile,File zipfile,String repstr){
        byte[] buf=new byte[1024];
        try {
            ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipfile));
            out.setEncoding("GBK");//解决中文问题
            for(int i=0;i<srcfile.length;i++){
             if(srcfile[i].isDirectory())zipFiles(srcfile[i].listFiles(),zipfile,repstr);//是文件夹，递归继续压缩
                FileInputStream in=new FileInputStream(srcfile[i]);         
                if(repstr==null||repstr.equals(""))
                 out.putNextEntry(new ZipEntry(srcfile[i].getAbsolutePath()));
                else
                 out.putNextEntry(new ZipEntry(com.jspsoft.util.StringEx.replace(srcfile[i].getAbsolutePath(), repstr, "")));//处理压缩文件带路径的情况，使用srcfile[i].getAbsolutePath()
                //System.out.println("正在压缩 "+srcfile[i].getAbsolutePath());
                int len;
                //out.write(enstr.getBytes());
                while((len=in.read(buf))>0){
                    out.write(buf,0,len);
                }
                out.closeEntry();
                in.close();
            }
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    
    /**
     * 默认不带解压路径就解压到当前文件夹
     * @param source
     */
    public static void unZipFiles(String source){
     unZipFiles(source,null);
    }
  /**
   * 解压文件
  * @param source：压缩文件
  * @param destination：解压地址
  */
 public static void unZipFiles(String source, String destination){
   try {
   if(destination==null||destination.equals(""))
    destination = new File(source).getParent();
      int buffer=1024;
      ZipFile zipFile = new ZipFile(source);
      Enumeration emu = zipFile.getEntries();
      while (emu.hasMoreElements()) {
     ZipEntry entry = (ZipEntry) emu.nextElement();
     if(destination!=null&&destination.lastIndexOf("\\")!=destination.length()-1)
      destination+="\\";//增强容错性
     //System.out.println("正在解压 "+destination+entry.getName());
     //目录不存在创建目录
     if (entry.isDirectory()) {
       new File(destination + entry.getName()).mkdirs();
       continue;
     }
     BufferedInputStream bis = new BufferedInputStream(zipFile
       .getInputStream(entry));
     File file = new File(destination + entry.getName());
     //文件所在目录如果不存在则创建
     File parent = file.getParentFile();
     if (parent != null && (!parent.exists())) {
      parent.mkdirs();
     }
     FileOutputStream fos = new FileOutputStream(file);
     BufferedOutputStream bos = new BufferedOutputStream(fos, buffer);
     int count;
     byte data[] = new byte[buffer];
     while ((count = bis.read(data, 0, buffer)) != -1) {
      bos.write(data, 0, count);
     }
     bos.flush();
     bos.close();
     bis.close();
       }
       zipFile.close();
  } catch (Exception e) {e.printStackTrace();}
 }

           
    /**
     * 释放资源
     */
    public static void clear(){
     if(all_files!=null&&all_files.size()>0)all_files.removeAllElements();
     if(files!=null&&files.size()>0)files.removeAllElements();
    }
    public static Vector getFiles() {
  return files;
 }

 public static void setFiles(Vector files) {
  ZipUtil.files = files;
 } 

}