java多线程实现下载图片并压缩

public class PictureTransferJob extends QuartzJobBean 
{ 
 protected void executeInternal(JobExecutionContext arg0) throws JobExecutionException 
 { 
 //实际的FTP配置是读取配置文件获取的 
 //FTP地址 
 String hostName ="192.168.1.112"; 
 //FTP端口 
 int port = 2001; 
 /FTP账号 
 String userName = "test1"; 
 //ftp密码 
 String password = "test1"; 
 //ftp文件存储目录 
 String ftpDowload = "/"; 
 //文件本地存储路径 
 String path = this.getClass().getResource("/").getPath(); 
 //图片地址文件存储目录 
 String addrPath=path.substring(1, path.indexOf("WEB-INF/classes"))+"picAddr"; 
 //实际下载的图片存储目录 
 String picPath=path.substring(1, path.indexOf("WEB-INF/classes"))+"pic"; 
 addrPath = addrPath.replace("%20"," "); 
 picPath = picPath.replace("%20"," "); 
 try 
 { 
 //创建存储图片地址的文件 
 creatFile(addrPath); 
 //创建存储实际图片的文件 
 creatFile(picPath); 
 String oldAddrPath = addrPath; 
 String oldPicPath = picPath; 
 //创建FTP连接 
 FtpUtil2 ftpUtil2 = new FtpUtil2(hostName, port,userName, password, ftpDowload, true); 
 //遍历FTP目录下的文件 
 String[] files = ftpUtil2.ListAllFiles(); 
 //本地数据库会有一个表记录下载过的文件，这里会查询数据库和ftp列出的文件名比较，如果已经下载过的文件就不会下载，避免重复下载。 
 //下面省略比较的过程，循环files数组，在本地创建文件 
 for(int i=0;i<files.length;i++){ 
 creatFile(addrPath+File.separator+fileName); 
 //ftpDowload是ftp服务器存储文件的地址，addrPath是本地存储文件的地址 
 //这里一个返回状态判断文件是否下载成功 
 boolean downloadInvestorFlag = ftpUtil2.downloadFile(ftpDowload, addrPath); 
 //文件下载成功后调读取文件的方法，将需要下载的图片地址存入容器 
 boolean entityState = setPictureDetail(addrPath,picPath,fileNameDate); 
 } 
 }  
 catch (Exception e) 
 { 
  e.printStackTrace(); 
  //调记录错误日志的业务类用于发送下载文件出错的短信 
 } 
} 
  
//这里开始读图片地址 
private boolean setPictureDetail(String addrPath,String picPath,String synDate) 
{ 
 System.out.println("----------进入setPictureDetail方法-----------"); 
 BufferedReader br = null; 
 try 
 { 
  br=new BufferedReader(new InputStreamReader(new FileInputStream(addrPath),"UTF-8")); 
  String row; 
  int count=0; 
 //map中存储每行读取到的图片名称和URL地址 
  Map<String, String> addrMap=new HashMap<String, String>(); 
  while ((row=br.readLine())!=null) 
  { 
  try 
  { 
   count++; 
   if (count==1) 
   { 
   continue; 
   } 
   String[] column = row.split("\\|\\|", -1); 
   addrMap.put(column[0].trim(), column[1].trim()); 
  } 
  catch (Exception e) 
  { 
   e.printStackTrace(); 
  } 
  } 
  System.out.println(new Date()); 
  //这里调用压缩方法，压缩方法中会调用执行下载图片的方法 
  zipPic(picPath,synDate,addrMap); 
  System.out.println(new Date()); 
  System.out.println("----------完成--------------"); 
  return true; 
 } 
 catch (Exception e) 
 { 
  e.printStackTrace(); 
  //调用记录错误日志的业务类 
  return false; 
 }finally { 
  try { 
  if (null != br) 
   br.close(); 
  } catch (IOException e) { 
  e.printStackTrace(); 
  } 
 } 
 } 
 /** 
 * 根据url地址下载图片 
 * @throws IOException 
 */ 
 private boolean downPic(String picPath,List<Entry<String, String>> addrList,List<File> picList)throws IOException{ 
 InputStream is=null; 
 FileOutputStream fos=null; 
 URL url=null; 
 String fileName=null; 
 String picAddr=null; 
 File pic=null; 
 try 
 { 
  for(Map.Entry<String, String> addrEntry:addrList) 
  { 
  fileName=addrEntry.getKey(); 
  picAddr=addrEntry.getValue(); 
  //创建Url对象 
  url=new URL(picAddr); 
  is=url.openStream(); 
  //URLConnection获取到的流通过InputStream直接写入字节数组会缺失数据，导致下载的图片不完整，使用org.apache.commons.io.IOUtils.toByteArray(urlconnection.openstream())可以解决 
  byte[] bytes=IOUtils.toByteArray(is);//new byte[is.available()];获取的字节 
  //流中数据读入字节数组，读入后，流中数据清空 
  pic=new File(picPath+fileName+".jpg"); 
  fos=new FileOutputStream(pic); 
  fos.write(bytes); 
  //将下载的图片存入List，待图片全部下载完成后传入zip方法进行压缩 
  picList.add(pic); 
  fos.flush(); 
  fos.close(); 
  is.close(); 
  } 
  return true; 
 } 
 catch (Exception e) 
 { 
  e.printStackTrace(); 
  return false; 
 } 
 finally{ 
  if (null!=fos) 
  { 
  fos.close(); 
  } 
  if (null!=is) 
  { 
  is.close(); 
  } 
 } 
 } 
 //这里是压缩文件的伪代码 
 private void zipPic(picPath,synDate,addrMap);{ 
 //传入需要压缩的文件列表和压缩文件名 
 ZipUtil.zipByStream(picList,new File(picPath+synDate+".zip")); 
 } 
 /** 
 * 创建文件 
 * @param path 
 */ 
 private void creatFile(String path) 
 { 
 File file = new File(path); 
 if(!file.exists()) 
 { 
  file.mkdirs(); 
 } 
 } 
}

/** 
 * 将下载的图片按天压缩 
 * @throws IOException 
 */ 
private boolean zipPic(String picPath,String synDate,Map<String, String> addrMap) throws IOException{ 
 //这里由于是多线程存储图片流，所以需要使用线程安全的map，因此使用ConcurrentHashMap 
 Map<String,InputStream> pictureList=new ConcurrentHashMap<String,InputStream>(); 
 //这里定义每个线程下载的图片个数 
 int count=400; 
 //存储需要下载的图片地址 
 List<Entry<String, String>> addrList=new ArrayList<Entry<String, String>>(addrMap.entrySet()); 
 //线程数，加一是因为要创建一个线程下载最后不足400个的图片 
 int nThreads=(addrList.size()/count)+1; 
 //CountDownLatch countDownLatch = new CountDownLatch(nThreads); 
 try 
 { 
 boolean downPic=false; 
 //执行多线程下载图片 
 downPic=downPic(picPath,addrList,picList,pictureList,nThreads,count); 
 if (downPic) 
 { 
  ZipUtil.zipByArray(picList,new File(picPath+synDate+".zip")); 
 } 
 return true; 
 } 
 catch (Exception e) 
 { 
 e.printStackTrace(); 
 return false; 
 } 
} 

/** 
 * 根据url地址下载图片 
 * @throws InterruptedException 
 */ 
private boolean downPic(String picPath,List<Entry<String, String>> addrList,Map<String, byte[]> picList,Map<String, InputStream> pictureList,int nThreads,int count)throws IOException, InterruptedException{ 
 ExecutorService threadPool=Executors.newFixedThreadPool(nThreads); 
 // 创建两个个计数器 
 CountDownLatch begin=new CountDownLatch(0); 
 CountDownLatch end=new CountDownLatch(nThreads); 
 // 循环创建线程 
 for (int i = 0; i < nThreads; i++) { 
 List<Entry<String, String>>subAddrList=null; 
 // 计算每个线程执行的数据 
 if ((i + 1) == nThreads) { 
  int startIndex = (i * count); 
  int endIndex = addrList.size(); 
  subAddrList = addrList.subList(startIndex, endIndex); 
 } else { 
  int startIndex = (i * count); 
  int endIndex = (i + 1) * count; 
  subAddrList = addrList.subList(startIndex, endIndex); 
 } 
 // 线程类 
 PicDownload mythead = new PicDownload(picPath,subAddrList,picList,pictureList); 
 // 这里执行线程的方式是调用线程池里的threadPool.execute(mythead)方法。 
 try 
 { 
  threadPool.execute(mythead); 
 } 
 catch (Exception e) 
 { 
  //记录错误日志 
  return false; 
 } 
 } 
 begin.countDown(); 
 end.await(); 
 // 执行完关闭线程池 
 threadPool.shutdown(); 
 //这里一定要循环直到线程池中所有线程都结束才能往下走，测试时由于没有这一步导致子线程下载图片还没完成，而主线程已经往下走了，导致压缩包内没有图片 
 //也可以使用CountDownLatch实现 
 /*while (true) 
 { 
 if (threadPool.isTerminated()) 
 { 
  System.out.println("所有子线程已结束！"); 
  break; 
 } 
 }*/ 
 return true; 
} 

class PicDownload implements Runnable{ 
 //下载图片的地址列表 
 List<Entry<String, String>> addrList; 
 //装载下载成功的图片列表 
 Map<String, byte[]> picList; 
 Map<String, InputStream> pictureList; 
 //图片本地存储路径 
 String picPath; 
 
 CountDownLatch begin,end; 
 public PicDownload(String picPath,List<Entry<String, String>> addrList,Map<String, InputStream> picList,CountDownLatch begin,CountDownLatch end){ 
 this.addrList=addrList; 
 this.picList=picList; 
 this.picPath=picPath; 
 this.begin=begin; 
 this.end=end; 
 } 
 @Override 
 public void run() 
 { 
 try 
 { 
  System.out.println(Thread.currentThread().getName()+"------"+Thread.currentThread().getId()); 
  downPicture(addrList); 
  //System.out.println(countDownLatch.getCount()); 
  begin.await(); 
 } 
 catch (Exception e) 
 { 
  e.printStackTrace(); 
 }finally{ 
  end.countDown(); 
  //countDownLatch.countDown(); 
 } 
 } 
 public boolean downPicture(List<Entry<String, String>> addrList) throws Exception{ 
 InputStream is=null; 
 FileOutputStream fos=null; 
 URL url=null; 
 String fileName=null; 
 String picAddr=null; 
 File pic=null; 
 try 
 { 
  for(Map.Entry<String, String> addrEntry:addrList) 
  { 
  fileName=addrEntry.getKey(); 
  picAddr=addrEntry.getValue(); 
  //创建Url对象 
  url=new URL(picAddr); 
  is=url.openStream(); 
  //URLConnection获取到的流通过InputStream直接写入字节数组会缺失数据，导致下载的图片不完整，使用org.apache.commons.io.IOUtils.toByteArray(urlconnection.openstream())可以解决 
  //byte[] bytes=IOUtils.toByteArray(is);//new byte[is.available()];获取的字节 
  //流中数据读入字节数组，读入后，流中数据清空 
  picList.put(fileName+".jpg", is); 
  //这时候由于没有把流写入文件，一定不能关闭流，否则流中的数据就会丢失 
  //is.close(); 
  } 
  return true; 
 } 
 catch (Exception e) 
 { 
  e.printStackTrace(); 
  return false; 
 } 
 finally{ 
  //不能关闭流 
  /*if (null!=is) 
  { 
  is.close(); 
  }*/ 
 } 
 } 
} 

/** 
*使用容器存储下载的图片字节数组 
*/ 
public boolean downPicture(List<Entry<String, String>> addrList) throws Exception{ 
 InputStream is=null; 
 FileOutputStream fos=null; 
 URL url=null; 
 String fileName=null; 
 String picAddr=null; 
 File pic=null; 
 try 
 { 
 for(Map.Entry<String, String> addrEntry:addrList) 
 { 
  fileName=addrEntry.getKey(); 
  picAddr=addrEntry.getValue(); 
  //创建Url对象 
  url=new URL(picAddr); 
  //打开连接，创建java.net.URLConnection对象，该对象没有关闭连接的方法，可以转为它的子类HttpURLConnection调用disconnect方法关闭连接。 
  //java.net.URLConnection和java.net.HttpURLConnection都有设置超时时间的方法关闭连接 
  //HttpURLConnection uc=(HttpURLConnection)url.openConnection(); 
  is=uc.getInputStream(); 
  //URLConnection获取到的流通过InputStream直接写入字节数组会缺失数据，导致下载的图片不完整，使用org.apache.commons.io.IOUtils.toByteArray(urlconnection.openstream())可以解决 
  byte[] bytes=IOUtils.toByteArray(is);//new byte[is.available()];获取的字节 
  //流中数据读入字节数组，读入后，流中数据清空 
  //is.read(bytes); 
  picList.put(fileName+".jpg",bytes); 
  is.close(); 
 } 
 return true; 
 } 
 catch (Exception e) 
 { 
 e.printStackTrace(); 
 return false; 
 } 
 finally{ 
 if (null!=is) 
 { 
  is.close(); 
 } 
 } 
}

import java.io.BufferedInputStream; 
import java.io.BufferedOutputStream; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
 
import org.apache.commons.net.ftp.FTPClient; 
import org.apache.commons.net.ftp.FTPClientConfig; 
import org.apache.commons.net.ftp.FTPConnectionClosedException; 
import org.apache.commons.net.ftp.FTPReply; 
 
public class FtpUtil2 { 
 private FTPClient ftpClient = null; 
 
 // ftp服务器地址 
 private String hostName; 
 
 // ftp服务器默认端口 
 public static int defaultport = 21; 
 
 // 登录名 
 private String userName; 
 
 // 登录密码 
 private String password; 
 
 // 需要访问的远程目录 
 private String remoteDir; 
 
 
 /** 
 * @param hostName 
 *  主机地址 
 * @param port 
 *  端口号 
 * @param userName 
 *  用户名 
 * @param password 
 *  密码 
 * @param remoteDir 
 *  默认工作目录 
 * @param is_zhTimeZone 
 *  是否是中文FTP Server端 
 * @return 
 * @return 
 */ 
 
 /** 
 * 新增方法 
 */ 
 public FtpUtil2() 
 { 
 PropConfig config = PropConfig.loadConfig("system.properties"); 
 String hostName = config.getConfig("ftpAddress"); 
 String port = config.getConfig("ftpPort"); 
 String userName = config.getConfig("ftpUserName"); 
 String password = config.getConfig("ftpPassword"); 
 String remoteDir = config.getConfig("remoteFilePath"); 
 boolean is_zhTimeZone= true; 
 this.hostName = hostName; 
 this.userName = userName; 
 this.password = password; 
 this.remoteDir = remoteDir == null ? "" : remoteDir; 
 this.ftpClient = new FTPClient(); 
 if (is_zhTimeZone) { 
  this.ftpClient.configure(FtpUtil2.Config()); 
  this.ftpClient.setControlEncoding("GBK"); 
 } 
 // 登录 
 this.login(); 
 // 切换目录 
 this.changeDir(this.remoteDir); 
 this.setFileType(FTPClient.BINARY_FILE_TYPE); 
 ftpClient.setDefaultPort(Integer.parseInt(port));  
 } 
 public FtpUtil2(String hostName, int port, String userName, 
  String password, String remoteDir, boolean is_zhTimeZone) { 
 this.hostName = hostName; 
 this.userName = userName; 
 this.password = password; 
 defaultport=port; 
 this.remoteDir = remoteDir == null ? "" : remoteDir; 
 this.ftpClient = new FTPClient(); 
 if (is_zhTimeZone) { 
  this.ftpClient.configure(FtpUtil2.Config()); 
  this.ftpClient.setControlEncoding("GBK"); 
 
 } 
 // 登录 
 this.login(); 
 // 切换目录 
 this.changeDir(this.remoteDir); 
 this.setFileType(FTPClient.ASCII_FILE_TYPE); 
 ftpClient.setDefaultPort(port); 
 
 } 
 
 /** 
 * 登录FTP服务器 
 */ 
 public boolean login() { 
 boolean success = false; 
 try { 
  ftpClient.connect(this.hostName,defaultport); 
  ftpClient.login(this.userName, this.password); 
  int reply; 
  reply = ftpClient.getReplyCode(); 
  if (!FTPReply.isPositiveCompletion(reply)) { 
  ftpClient.disconnect(); 
  return success; 
  } 
 } catch (FTPConnectionClosedException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } 
 success = true; 
 System.out.println("连接到ftp服务器：" + this.hostName + " 成功..开始登录"); 
 return success; 
 } 
 
 private static FTPClientConfig Config() { 
 FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_UNIX); 
 conf.setRecentDateFormatStr("MM月dd日 HH:mm"); 
 // conf.setRecentDateFormatStr("(YYYY年)?MM月dd日( HH:mm)?"); 
 return conf; 
 } 
 
 /** 
 * 变更工作目录 
 * 
 * @param remoteDir 
 * 
 */ 
 public void changeDir(String remoteDir) { 
 try { 
  this.remoteDir = remoteDir; 
  ftpClient.changeWorkingDirectory(remoteDir); 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } 
 System.out.println("变更工作目录为:" + remoteDir); 
 } 
 
 /** 
 * 返回上一级目录(父目录) 
 */ 
 public void toParentDir() { 
 try { 
  ftpClient.changeToParentDirectory(); 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 列出当前工作目录下所有文件 
 */ 
 public String[] ListAllFiles() { 
 String[] names = this.ListFiles("*"); 
 return this.sort(names); 
 } 
 
 /** 
 * 列出指定工作目录下的匹配文件 
 * 
 * @param dir 
 *  exp: /cim/ 
 * @param file_regEx 
 *  通配符为* 
 */ 
 public String[] ListAllFiles(String dir, String file_regEx) { 
 String[] names = this.ListFiles(dir + file_regEx); 
 return this.sort(names); 
 } 
 
 /** 
 * 列出匹配文件 
 * 
 * @param file_regEx 
 *  匹配字符,通配符为* 
 */ 
 public String[] ListFiles(String file_regEx) { 
 try { 
  /** 
   * FTPFile[] remoteFiles = ftpClient.listFiles(file_regEx); 
   * //System.out.println(remoteFiles.length); String[] name = new 
   * String[remoteFiles.length]; if(remoteFiles != null) { for(int 
   * i=0;i<remoteFiles.length;i++) { if(remoteFiles[i] == null) 
   * name[i] = ""; else 
   * if(remoteFiles[i].getName()==null||remoteFiles 
   * [i].getName().equals 
   * (".")||remoteFiles[i].getName().equals("..")) { name[i] = ""; 
   * } else name[i] = remoteFiles[i].getName(); 
   * System.out.println(name[i]); } } 
   */ 
  ftpClient.enterLocalPassiveMode(); 
  String[] name = ftpClient.listNames(file_regEx);; 
  if (name == null) 
  return new String[0]; 
 
  return this.sort(name); 
 
 } catch (Exception e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } 
 return new String[0]; 
 } 
 
 public void Lists(String reg) { 
 try { 
  String[] a = ftpClient.listNames(reg); 
  if (a != null) { 
  for (String b : a) { 
   System.out.println(b); 
  } 
  } 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 设置传输文件的类型[文本文件或者二进制文件] 
 * 
 * @param fileType 
 *  --BINARY_FILE_TYPE,ASCII_FILE_TYPE 
 */ 
 public void setFileType(int fileType) { 
 try { 
  ftpClient.setFileType(fileType); 
 } catch (IOException e) { 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 上传文件 
 * 
 * @param localFilePath 
 *  --本地文件路径+文件名 
 * @param newFileName 
 *  --新的文件名 
 */ 
 public void uploadFile(String localFilePath, String newFileName) { 
 // 上传文件 
 this.ftpClient.enterLocalPassiveMode();// 被动模式连接 
 BufferedInputStream buffIn = null; 
 try { 
  buffIn = new BufferedInputStream(new FileInputStream(localFilePath)); 
  boolean ifUpload = ftpClient.storeFile(newFileName, buffIn); 
  if (!ifUpload) { 
  System.out.println("上传文件失败。。。"); 
  } else { 
  System.out.println("上传文件成功。。。"); 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } finally { 
  try { 
  if (buffIn != null) 
   buffIn.close(); 
  } catch (Exception e) { 
  e.printStackTrace(); 
  } 
 } 
 } 
 
 /** 
 * 上传文件2 
 * 
 * @param file 
 *  --FileInputStream的文件 
 * @param newFileName 
 *  --新的文件名 
 */ 
 public void newUploadFile(FileInputStream file, String newFileName) { 
 // 上传文件 
 this.ftpClient.enterLocalPassiveMode();// 被动模式连接 
 BufferedInputStream buffIn = null; 
 try { 
  buffIn = new BufferedInputStream(file); 
  boolean ifUpload = ftpClient.storeFile(newFileName, buffIn); 
  if (!ifUpload) { 
  System.out.println("上传文件失败。。。"); 
  } else { 
  System.out.println("上传文件成功。。。"); 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } finally { 
  try { 
  if (buffIn != null) 
   buffIn.close(); 
  } catch (Exception e) { 
  e.printStackTrace(); 
  } 
 } 
 } 
 
 /** 
 * 下载文件(单个) 
 * 
 * @param remoteFileName 
 *  --服务器上的文件名 
 * @param localFileName 
 *  --本地文件名 
 */ 
 public boolean downloadFile(String remoteFileName, String localFileName) { 
 this.ftpClient.enterLocalPassiveMode();// 被动模式连接 
 BufferedOutputStream buffOut = null; 
 try { 
  buffOut = new BufferedOutputStream(new FileOutputStream( 
   localFileName)); 
  boolean ifDownload = ftpClient 
   .retrieveFile(remoteFileName, buffOut); 
  if (!ifDownload) { 
  System.out.println("下载文件失败。。。"); 
  return false; 
  } else { 
  System.out.println("下载文件成功。。。"); 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
  return false; 
 } finally { 
  try { 
  if (buffOut != null) 
   buffOut.close(); 
  } catch (Exception e) { 
  e.printStackTrace(); 
  } 
 } 
 return true; 
 } 
 
 /** 
 * 关闭FTP连接 
 */ 
 public void close() { 
 try { 
  if (ftpClient != null) { 
  ftpClient.logout(); 
  ftpClient.disconnect(); 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 冒泡排序字符串(从大到小) 
 */ 
 public String[] sort(String[] str_Array) { 
 if (str_Array == null) { 
  throw new NullPointerException("The str_Array can not be null!"); 
 } 
 String tmp = ""; 
 for (int i = 0; i < str_Array.length; i++) { 
  for (int j = 0; j < str_Array.length - i - 1; j++) { 
  if (str_Array[j].compareTo(str_Array[j + 1]) < 0) { 
   tmp = str_Array[j]; 
   str_Array[j] = str_Array[j + 1]; 
   str_Array[j + 1] = tmp; 
  } 
  } 
 } 
 return str_Array; 
 } 
 
 public static void main(String[] strs) { 
 FtpUtil2 FtpUtil2 = new FtpUtil2("192.168.1.112", 20011, "test1", 
  "test1", "/", true); 
 FtpUtil2.downloadFile("test.txt", "d:\\test.txt"); 
 } 
 
} 

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.util.ArrayList; 
import java.util.Enumeration; 
import java.util.List; 
import java.util.Map; 
import java.util.zip.ZipEntry; 
import java.util.zip.ZipFile; 
import java.util.zip.ZipOutputStream; 
 
import org.apache.commons.io.IOUtils; 
 
import com.ibatis.common.logging.Log; 
import com.ibatis.common.logging.LogFactory; 
 
public class ZipUtil { 
 private static final Log log = LogFactory.getLog(ZipUtil.class); 
 
 
 /** 
 * 压缩文件 
 * 
 * @param srcfile File[] 需要压缩的文件列表 
 * @param zipfile File 压缩后的文件 
 */ 
 public static OutputStream zipFiles(List<File> srcfile, OutputStream outputStream) { 
 byte[] buf = new byte[1024]; 
 try {    
  // Create the ZIP file 
  ZipOutputStream out = new ZipOutputStream(outputStream); 
  // Compress the files 
  for (int i = 0; i < srcfile.size(); i++) { 
  File file = srcfile.get(i); 
  FileInputStream in = new FileInputStream(file); 
  // Add ZIP entry to output stream. 
  out.putNextEntry(new ZipEntry(file.getName())); 
   
  // Transfer bytes from the file to the ZIP file 
  int len; 
  while ((len = in.read(buf)) > 0) { 
   //System.out.println(len+"=============="); 
   
   out.write(buf, 0, len); 
  } 
  // Complete the entry 
  out.closeEntry(); 
  in.close(); 
  } 
  // Complete the ZIP file 
  out.close(); 
 } catch (IOException e) { 
  log.error("ZipUtil zipFiles exception:"+e); 
 } 
 return outputStream; 
 } 
 
 
 /** 
 * 压缩文件 
 * 
 * @param srcfile File[] 需要压缩的文件列表 
 * @param zipfile File 压缩后的文件 
 */ 
 public static void zipFiles(List<File> srcfile, File zipfile) { 
 byte[] buf = new byte[1024]; 
 try { 
  // Create the ZIP file 
  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile)); 
  // Compress the files 
  for (int i = 0; i < srcfile.size(); i++) { 
  File file = srcfile.get(i); 
  FileInputStream in = new FileInputStream(file); 
  // Add ZIP entry to output stream. 
  out.putNextEntry(new ZipEntry(file.getName())); 
  // Transfer bytes from the file to the ZIP file 
  int len; 
  while ((len = in.read(buf)) > 0) { 
   out.write(buf, 0, len); 
  } 
  // Complete the entry 
  out.closeEntry(); 
  in.close(); 
  } 
  // Complete the ZIP file 
  out.close(); 
 } catch (IOException e) { 
  log.error("ZipUtil zipFiles exception:"+e); 
 } 
 } 
 
 
 /** 
 * 压缩文件 
 * srcfile:key:文件名,value:文件对应的输入流 
 * @param srcfile 
 * @param zipfile 
 * @see 
 */ 
 public static void zipByStream(Map<String,InputStream> srcfile, File zipfile) { 
 try { 
  // Create the ZIP file 
  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile)); 
  // Compress the files 
  System.out.println(srcfile.entrySet().size()); 
  for (Map.Entry<String, InputStream> fileEntry:srcfile.entrySet()) { 
  InputStream in = fileEntry.getValue(); 
  // Add ZIP entry to output stream. 
  System.out.println(in.available()); 
  out.putNextEntry(new ZipEntry(fileEntry.getKey())); 
  // Transfer bytes from the file to the ZIP file 
  byte[] bytes=IOUtils.toByteArray(in); 
  out.write(bytes); 
  out.closeEntry(); 
  in.close(); 
  } 
  // Complete the ZIP file 
  out.close(); 
 } catch (IOException e) { 
  log.error("ZipUtil zipFiles exception:"+e); 
  System.out.println(e.getMessage()); 
 } 
 } 
 
 
 /** 
 * 压缩文件 
 * srcfile:key:文件名,value:文件对应的字节数组 
 * @param srcfile 
 * @param zipfile 
 * @see 
 */ 
 public static void zipByArray(Map<String,byte[]> srcfile, File zipfile) { 
 byte[] buf = new byte[1024]; 
 try { 
  // Create the ZIP file 
  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile)); 
  // Compress the files 
  System.out.println(srcfile.entrySet().size()); 
  for (Map.Entry<String, byte[]> fileEntry:srcfile.entrySet()) { 
  //InputStream in = fileEntry.getValue(); 
  // Add ZIP entry to output stream. 
  out.putNextEntry(new ZipEntry(fileEntry.getKey())); 
  // Transfer bytes from the file to the ZIP file 
  byte[] bytes=fileEntry.getValue();//IOUtils.toByteArray(in); 
  out.write(bytes); 
  out.closeEntry(); 
  //in.close(); 
  } 
  // Complete the ZIP file 
  out.close(); 
 } catch (IOException e) { 
  log.error("ZipUtil zipFiles exception:"+e); 
  System.out.println(e.getMessage()); 
 } 
 } 
 
 /** 
 * 解压缩 
 * 
 * @param zipfile File 需要解压缩的文件 
 * @param descDir String 解压后的目标目录 
 */ 
 public static void unZipFiles(File zipfile, String descDir) { 
 try { 
  // Open the ZIP file 
  ZipFile zf = new ZipFile(zipfile); 
  for (Enumeration entries = zf.entries(); entries.hasMoreElements();) { 
  // Get the entry name 
  ZipEntry entry = ((ZipEntry) entries.nextElement()); 
  String zipEntryName = entry.getName(); 
  InputStream in = zf.getInputStream(entry); 
  // System.out.println(zipEntryName); 
  OutputStream out = new FileOutputStream(descDir + zipEntryName); 
  byte[] buf1 = new byte[1024]; 
  int len; 
  while ((len = in.read(buf1)) > 0) { 
   out.write(buf1, 0, len); 
  } 
  // Close the file and stream 
  in.close(); 
  out.close(); 
  } 
 } catch (IOException e) { 
  log.error("ZipUtil unZipFiles exception:"+e); 
 } 
 } 
 
 /** 
 * Main 
 * 
 * @param args 
 */ 
 public static void main(String[] args) { 
 List<File> srcfile=new ArrayList<File>(); 
 srcfile.add(new File("d:\\1.jpg")); 
 srcfile.add(new File("d:\\2.jpg")); 
 srcfile.add(new File("d:\\3.jpg")); 
 srcfile.add(new File("d:\\4.jpg")); 
 File zipfile = new File("d:\\pic.zip"); 
 ZipUtil.zipFiles(srcfile, zipfile); 
 } 
}