Springmvc下一次选多个文件上传(一)Form提交

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Eclipse下搭建基本的基于注解的springmvc项目，除了spring的包以外多加2个包：

commons-fileupload和commons-io的jar包，随处可下载：

jsp页面：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%  String path = request.getContextPath();  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.6.4.min.js"></script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Index2</title><script type="text/JavaScript" src="http://apps.bdimg.com/libs/jQuery/1.6.4/jquery.min.js"></script><link href="http://libs.baidu.com/bootstrap/2.3.2/css/bootstrap.min.css" rel="stylesheet"><script src="http://libs.baidu.com/bootstrap/2.3.2/js/bootstrap.min.js"></script></head><body> <form action="<%=basePath%>upload2.htm" method="post" enctype="multipart/form-data">   <input class="filePrew"  tabIndex="3" type="file" size="3" name="graphTheories" multiple/>   <input type="submit" value="提交"/></form>    </body>    </html>

springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><!-- 自动扫描包下面的文件，类上带有@Controller的会注册为bean --><context:component-scan base-package="com.taray.controller"></context:component-scan><!-- 代替处理器映射器、处理器适配器 ,mvc注解驱动--><mvc:annotation-driven/><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 配置jsp路径的前缀，后缀，那样在controller中设置视图时候不需要再加了 --><!-- prefix前缀如果 不添加，那么如果在@controller注解下有一个@requestmapping("name")访问时候会出错--><property name="prefix" value="/"/><property name="suffix" value=".jsp"/></bean> <!-- 支持上传文件，不清楚，这个示例没这玩意一样用 -->      <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>  </beans>

Controller

package com.taray.controller;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.UUID;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.multipart.MultipartFile;@Controller@Scope("prototype")public class UpController {@RequestMapping("load")public String TestOne(HttpServletRequest request,HttpServletResponse response){//request.setAttribute("name", "你好,Siri");return "index2";}    @RequestMapping("upload2")    public String uploadpic(@RequestParam(value="graphTheories") MultipartFile[] graphTheories, HttpServletRequest request) throws Exception{    List<String>newFileNames=this.uploadFileList(graphTheories, request);        for (String newFileName:newFileNames){             System.out.println("newfile"+newFileName);        }        /*for(int i=0;i<graphTheories.length;i++){     String filename=graphTheories[i].getOriginalFilename();     System.out.println(filename);     }*/    return null;    }        /**     * 批量上传文件 返回值为文件的新名字 UUID.randomUUID()+originalFilename     * @param multipartFiles     * @param request     * @return     * @throws IllegalStateException     * @throws IOException     */    public List<String> uploadFileList(MultipartFile multipartFiles[], HttpServletRequest request) throws Exception {        List<String>newFileNames=new ArrayList<>();        try {            for(MultipartFile multipartFile:multipartFiles){                //文件的原始名称                String originalFilename=multipartFile.getOriginalFilename();                String newFileName=null;                if (multipartFile!=null&&originalFilename!=null&&originalFilename.length()>0){                    newFileName= UUID.randomUUID()+originalFilename;                    //存储图片的物理路径                    String pic_path = request.getSession().getServletContext().getRealPath("/upload");                    //如果文件夹不存在则创建                    File file=new File(pic_path);                    if(!file.exists()){                    System.out.println("file not exists");                    file.mkdir();                    }                    /**                     * 获取新文件的File实例,通过spring的org.springframework.web.multipartInterface MultipartFile                     * 下的transferTo方法,这个可以移动文件的文件系统,复制文件系统中的文件或内存内容保存到目标文件.                     * 如果目标文件已经存在,它将被删除。                     */                    //新文件路径实例                    File targetFile = new File(pic_path, newFileName);                    //内存数据读入磁盘                    multipartFile.transferTo(targetFile);                    newFileNames.add(newFileName);                }            }        }catch (IOException e){            throw new Exception();        }        return newFileNames;    }}

简单了解了multiple选中多图片上传的用法，属于form表单提交，无法使用到实际项目中。

下一篇：一次选择多个文件上传：异步提交

http://www.cnblogs.com/kissdodog/archive/2012/12/15/2819025.html

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