JS+Struts2多文件上传实例详解

<%@ page language="java" pageEncoding="UTF-8"%>  
<%@ taglib prefix="s" uri="/struts-tags"%>  
 
  
  
    
    <%@include file="../../_head.html"%>  
      
      
      
      
      
      
    
    
    <%@ include file="/common/message.jsp"%>  
    
  
      
  
        
  
          文件上传(可同时上传多份文件)  
        
  
        
  
      
  
        
          
        
      
  
        
  
          
  
            
  
              序号  
            
  
            
  
              文件名  
            
  
            
  
              上传时间  
            
  
          
  
        
  
        
  
          
  
            
  
            
  
            
  
            
  
            
  
            
  
          
  
        
  
      
  
    
  
    
 

//uploadFile对应页面 
private List uploadFile;  
//文件名对应uploadFile+“FileName”，要不获取不到文件名 
private List uploadFileFileName;   
// 文件上传  
public String mUploadFile() {  
  if (null == uploadFile) {  
  this.addActionError("请上传文件!");  
  } else {  
  String fileName = "";  
   try {  
           //在自己代码中控制文件上传的服务器目录 
     String directory = ServletActionContext.getServletContext().getRealPath("/uploads");  
           //判断该目录是否存在，不存在则创建 
           FileUtil.makeDir(directory);  
           //循环处理上传的文件 
      for(int i=0,j=uploadFile.size();i

public class FileUtil {
 
 private static final int BUFFER_SIZE = 16 * 1024;
 
 public static void uploadFile(File src, File dst) throws IOException {
 
 InputStream in = null;
 OutputStream out = null;
 try {
  in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);
  out = new BufferedOutputStream(new FileOutputStream(dst),
   BUFFER_SIZE);
  byte[] buffer = new byte[BUFFER_SIZE];
  while (in.read(buffer) > 0) {
  out.write(buffer);
  }
 } finally {
  if (null != in) {
  in.close();
  }
  if (null != out) {
  out.close();
  }
 }
 
 }
 
 public static String getExtention(String fileName) {
 int pos = fileName.lastIndexOf(".");
 return fileName.substring(pos);
 }
 
 public static void makeDir(String directory) {
 File dir = new File(directory);
 
 if (!dir.isDirectory()) {
  dir.mkdirs();
 }
 
 }
 
 public static String generateFileName(String fileName)
  throws UnsupportedEncodingException {
 DateFormat format = new SimpleDateFormat("yyMMddHHmmss");
 String formatDate = format.format(new Date());
 String extension = fileName.substring(fileName.lastIndexOf("."));
 fileName = new String(fileName.getBytes("iso8859-1"), "gb2312");
 return fileName + "_" + formatDate + new Random().nextInt(10000)
  + extension;
 }
 
}