java 批量上传文件

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需要自行下载 commons的包

jsp 部分

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<html>
<head>
<title>文件批量上传</title>
<script type="text/javascript" src="js/jquery-1.8.3.min.js"></script>
</head>

<body>
      <form id="batchUploadRiskFileForm" action="../testy/queryCheckDataList" method="Post" enctype="multipart/form-data">
   选择文件：<input type="file" name="updateFiles" multiple="multiple" />
   <input type="submit" />
   <p>请在浏览文件时选取至少一个文件</p>
   </form>
   </body>
</html>

Java 部分

package com.yihuacomputer.yhcloud.web.action.hr.check;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.disk.DiskFileItem;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import com.yihuacomputer.yhcloud.service.common.base.action.BaseController;

@Controller
@Scope("prototype")
@RequestMapping(value = "testy")
public class UploadAction extends BaseController
{

   @RequestMapping(value = "/queryCheckDataList", method = RequestMethod.POST)
   @ResponseBody
   public ModelMap batchUpdateRiskRule(@RequestParam("updateFiles") MultipartFile[] updateFiles, HttpServletRequest request)
   throws IOException
   {
       ModelMap result = new ModelMap();
       Map map = new HashMap();
        // 判断文件是否为空
        if (!(updateFiles.length==0)) {
            try {
               for (int i = 0; i < updateFiles.length; i++) {
                   /* // 文件保存路径
                    String filePath = request.getSession().getServletContext().getRealPath("/") + "upload/"
                            + updateFiles[i].getOriginalFilename(); */

                    //这个updateFiles[i]是MultipartFile的
                   //MultipartFile 转换成 File 这里主要是把多文件单独一个一个提取出来单独处理
                   //不需要单独处理直接批量上传使用 updateFiles 就可以了
                    CommonsMultipartFile cf= (CommonsMultipartFile)updateFiles[i];
                    DiskFileItem fi = (DiskFileItem)cf.getFileItem();

//获取流中的单个文件

File file = fi.getStoreLocation();

                    result.put("0","上传成功");

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
       return result;
   }
}

serlve.xml 配置

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="52428800" />
</bean>

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