使用Commons进行文件上传

一、下载最新版的uploadify
http://www.uploadify.com/download/
二、将压缩包解压，复制
uploadify.css
uploadify.swf
swfobjects.js
jquery.uploadify.v2.1.0.min.js
cancel.png
jquery-1.3.2.min.js
default.css到项目中。
三、在项目中添加三个jar包
commons-fileupload-1.2.1.jar
commons-logging-1.0.4.jar
commons-io.jar
四、在需要使用上传插件的页页头部导入

Html代码

五、编写js文件
Js代码

 1. $(document).ready(function(){     
  //A文件上传  
    $("#uploadFile").uploadify({  
   'uploader'       : 'images/uploadify.swf',//指定上传控件的主体文件，默认‘uploader.swf’  
   'script'         : 'UploadServlet', //指定服务器端上传处理文件  
   'scriptData'     : {'uploadFile':$('#uploadFile').val()},  
   'cancelImg'      : 'images/cancel.png',  
   'fileDataName'   : 'uploadFile',  
   'fileDesc'       : 'jpg文件或jpeg文件或gif文件',  //出现在上传对话框中的文件类型描述  
  'fileExt'        : '*.jpg;*.jpeg;*.gif',      //控制可上传文件的扩展名，启用本项时需同时声明fileDesc  
  'sizeLimit'      : 512000,           //控制上传文件的大小，单位byte               
  'folder'         : '/uploadImages',  
  'queueID'        : 'fileQueueA',  
  'auto'           : false,  //是否为自动上传
  'multi'          : true  //是否允许多文件上传
 });  
 });       

六、html代码
Html代码

  
     
     
     
     
     
     
     
     
    
    
    
    
    
    
   
  
  
  
  
  
Multiple File Upload
  
   Upload Files | Clear Queue
    
 
  
    
    

七、servlet代码
Java代码

1. package com.aptech.servlet;  
   import java.io.File;  
   import java.io.IOException;  
   import java.util.Iterator;  
   import java.util.List;  
   import javax.servlet.ServletConfig;  
   import javax.servlet.ServletException;  
   import javax.servlet.http.HttpServlet;  
   import javax.servlet.http.HttpServletRequest;  
   import javax.servlet.http.HttpServletResponse;  
   import org.apache.commons.fileupload.FileItem;  
   import org.apache.commons.fileupload.FileUploadException;  
   import org.apache.commons.fileupload.disk.DiskFileItemFactory;  
   import org.apache.commons.fileupload.servlet.ServletFileUpload;  
   import com.aptech.util.FileUploadUtil;    

   public class UploadServlet extends HttpServlet {  
        private static final long serialVersionUID = 1L;  
        private static String     path;  

       @Override  
      protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {     
       // 生成存放文件的路径  
       String savePath = path + "/";  
          File f1 = new File(savePath);  
       if (!f1.exists()) {  
        f1.mkdirs();  
      }  
       DiskFileItemFactory fac = new DiskFileItemFactory();  
      ServletFileUpload upload = new ServletFileUpload(fac);     
       upload.setHeaderEncoding("utf-8");   
      List fileList = null;  
       try {  
         fileList = upload.parseRequest(request);  
       } catch (FileUploadException ex) {  
         return;  
       }  
       Iterator it = fileList.iterator();  
       String name = "";     
       String extName = "";  
       while (it.hasNext()) {   
         FileItem item = it.next();     
         if (!item.isFormField()) {    
          name = item.getName();     
          // 新的文件名  
           String newUploadFileName = FileUploadUtil.getlnstance().getNewFileName(name);     
          // // 扩展名格式：  
          // if (name.lastIndexOf(".") >= 0) {  
          // extName = name.substring(name.lastIndexOf("."));  
           // }  
           File saveFile = new File(savePath + newUploadFileName);  
           try {   
            item.write(saveFile);    
           } catch (Exception e) {    
             e.printStackTrace();    
           }   
         }     
       }  
     }  .   
    @Override  
    public void init(ServletConfig config) throws ServletException {  
      path = config.getServletContext().getRealPath("/uploadImages");  
   }    

 }  

八、配置servlet
Xml代码

  1.   
   2.   
     jquery_upload  
       
        index.html  
        index.htm  
        index.jsp  
        default.html  
        default.htm  
       default.jsp  
       
       
         
       UploadServlet  
       UploadServlet  
       com.aptech.servlet.UploadServlet  
       
       
       UploadServlet  
       /UploadServlet