文件压缩

package com.email.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

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

public class ZipUtils {
 
       private String comment = ""; 
       public void setComment(String comment) { 
          this.comment = comment; 
       } 
    
      /**
        * @param src：要压缩的目录
        * @param dest：压缩文件存档
        * @throws Exception
        */ 
       public void zip(String src, String dest, List filter) throws Exception { 
           ZipOutputStream out = new ZipOutputStream(new FileOutputStream(dest)); 
           File srcFile = new File(src); 
           zip(out,srcFile,"",filter); 
           out.close(); 
       } 
        
       /**
        * @param out
        * @param srcFile
        * @param base：根路径
        * @param filter：过滤
        * @throws Exception
        */ 
       public void zip(ZipOutputStream out, File srcFile, String base, List filter) throws Exception { 
           if(srcFile.exists()==false) { 
               throw new Exception("压缩目录不存在!"); 
           } 
            
           if(srcFile.isDirectory()) { 
               File[] files = srcFile.listFiles(); 
               base = base.length() == 0 ? "" : base + "/"; 
               if (isExist(base, filter)) { 
                   out.putNextEntry(new ZipEntry(base)); 
               } 
               for(int i=0; i<files.length; i++) { 
                   zip(out,files[i],base + files[i].getName(),filter); 
               } 
           } else { 
               if (isExist(base, filter)) { 
                   base = base.length() == 0 ? srcFile.getName() : base ; 
                   ZipEntry zipEntry = new ZipEntry(base); 
                   zipEntry.setComment(comment); 
                   out.putNextEntry(zipEntry); 
                   FileInputStream in = new FileInputStream(srcFile); 
                   int length = 0; 
                   byte[] b = new byte[1024]; 
                   while((length=in.read(b,0,1024))!=-1) { 
                       out.write(b,0,length); 
                   } 
                   in.close(); 
               } 
           } 
       } 
        
      /**
  .      * 过滤出要压缩的文件夹
        * @param base
        * @param list
        * @return
        */ 
       public boolean isExist(String base, List list) { 
           if (list != null && !list.isEmpty()) { 
               for (int i = 0; i < list.size(); i++) { 
                   if (base.indexOf((String) list.get(i)) >= 0) { 
                       return true; 
                   } 
               } 
           } 
           return false; 
       } 
        
       /**
        * @param srcFile：压缩文件路径
        * @param dest：解压到的目录
        * @param deleteFile：解压完成后是否删除文件
       * @throws Exception
        */ 
       public void unZip(String srcFile,String dest,boolean deleteFile)  throws Exception { 
           File file = new File(srcFile); 
           if(!file.exists()) { 
               throw new Exception("解压文件不存在!"); 
          } 
          ZipFile zipFile = new ZipFile(file); 
          Enumeration e = zipFile.getEntries(); 
         while(e.hasMoreElements()) { 
              ZipEntry zipEntry = (ZipEntry)e.nextElement(); 
              if(zipEntry.isDirectory()) { 
                  String name = zipEntry.getName(); 
                  name = name.substring(0,name.length()-1); 
                 File f = new File(dest + name); 
                  f.mkdirs(); 
             } else { 
                  File f = new File(dest + zipEntry.getName()); 
                  f.getParentFile().mkdirs(); 
                  f.createNewFile(); 
                  InputStream is = zipFile.getInputStream(zipEntry); 
                  FileOutputStream fos = new FileOutputStream(f); 
                  int length = 0; 
                  byte[] b = new byte[1024]; 
                  while((length=is.read(b, 0, 1024))!=-1) { 
                      fos.write(b, 0, length); 
                  } 
                 is.close(); 
                  fos.close(); 
              } 
          } 
           
          if (zipFile != null) { 
              zipFile.close(); 
          } 
           
          if(deleteFile) { 
              file.deleteOnExit(); 
          } 
      } 
       
      /**
       * 获取Zip文件的注释信息
       * @param srcFile
       * @return
       */ 
      public static String getZipComment(String srcFile) { 
          String comment = ""; 
          try { 
              ZipFile zipFile = new ZipFile(srcFile); 
              Enumeration e = zipFile.getEntries(); 
   
              while (e.hasMoreElements()) { 
                  ZipEntry ze = (ZipEntry) e.nextElement(); 
   
                  comment = ze.getComment(); 
                  if (comment != null && !comment.equals("") 
                          && !comment.equals("null")) { 
                      break; 
                  } 
              } 
   
              zipFile.close(); 
          } catch (Exception e) { 
              System.out.println("获取zip文件注释信息失败:" + e.getMessage()); 
          } 
   
          return comment; 
      } 
   
      public static void main(String[] args) throws Exception { 
//           long begin = System.currentTimeMillis(); 
//           ZipUtils zu = new ZipUtils(); 
////           List<String> filter = new ArrayList<String>();
////           File f = new File("f:/手册");
////           for(File ff : f.listFiles()){
////           //System.out.println(ff.getName());
////           filter.add(ff.getName());
////           }
//          
//           //filter.add("《JavaScript 语言参考》中文版.chm");
//           //filter.add("CSS 2.0样式表中文手册.chm");
//           //filter.add("3RDPARTY"); 
//           //filter.add("BANNER.GIF"); 
//           //zu.setComment("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"); 
//          // zu.zip("f:/手册", "f:/手册.zip",filter); 
//           //System.out.println(ZipUtils.getZipComment("c:/hh.zip")); 
//           //new ZipUtils().unZip("f:/手册.zip", "f:/ccc/", true); 
//           //File f = new File("c:/hh.zip"); 
//           //f.deleteOnExit(); 
//           long end = System.currentTimeMillis(); 
//          System.out.println(end-begin); 
      }
}