上传功能（前后端代码）

直接上代码：

JSP页面代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="../../css/bootstrapcss/bootstrap.min.css">

<script type="text/javascript" src="../../js/jquery-1.11.3.js"></script>
<script type="text/javascript" src="../../js/bootstrapjs/bootstrap.min.js"></script>
<title>Insert title here</title>
</head>

<body>
    <form action="http://10.10.0.158:8080/newBeginning//ajaxfileupload/upload2.do" method="post" enctype="multipart/form-data">
        <input type="file" name="file" id="upfile"  multiple="multiple"/> 
        <input type="submit" value="Submit" />
    </form>
    <table>
</table>
</body>

<script type="text/javascript">   
   
</script>
</html>

后台Java springMVC代码：（注意，此处除了springMVC的一般jar包外，还需要com.springsource.org.apache.commons.fileupload-1.2.0.jar和com.springsource.org.apache.commons.io-1.4.0.jar）

package com.sxdx.ajaxfileupload.action;

import java.io.File;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
@Controller
@RequestMapping(value="/ajaxfileupload")
public class ajaxfileupload {
    @RequestMapping(value="/upload2.do")
    public void upload2(HttpServletRequest request,HttpServletResponse response) throws Exception{
        System.out.println("dsaf");
        //创建一个通用的多部分解析器
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
        //判断request是否有文件需要上传
        if(multipartResolver.isMultipart(request)){
            //转换成多部分request
            MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
            
            List<MultipartFile> fileList = multiRequest.getFiles("file");    
            for (MultipartFile mf : fileList) {
                if(!mf.isEmpty()){
                    //取得当前上传文件的名称
                    String myFileName = mf.getOriginalFilename();
                    //如果名称不为""，说明该文件存在，否则说明文件不存在。
                    if(myFileName.trim()!=""){
                        System.out.println(myFileName);
                        //重命名上传后的文件
                        String filename = "demoupload"+mf.getOriginalFilename();
                        //定义上传路劲
                        String path = "E:/"+filename;
                        File localFile = new File(path);
                        mf.transferTo(localFile);
                    }   
                }    
            }
            //return "/success";
        }else{
            //return "/error";
        }
    }
}

效果截图：

上传到了E盘的文件：

JSP显示页面：

控制台：