SpringMVC实现文件上传

1.添加FileUpload相关的jar

2.springmvc.xml和web.xml文件中设置

<!-- 配置SpringMVC的前端控制器 -->
  <servlet>
  	<servlet-name>springmvc</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:springmvc.xml</param-value>
  	</init-param>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springmvc</servlet-name>
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
  
  <!-- 配置SpringMVC设置编码方式的过滤器 -->
  <filter>
  	<filter-name>encoding</filter-name>
  	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  	<init-param>
  		<param-name>encoding</param-name>
  		<param-value>utf-8</param-value>
  	</init-param>
  	<init-param>
  		<param-name>forceRequestEncoding</param-name>
  		<param-value>true</param-value>
  	</init-param>
  	<init-param>
  		<param-name>forceResponseEncoding</param-name>
  		<param-value>true</param-value>
  	</init-param>
  </filter>
  <filter-mapping>
  	<filter-name>encoding</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  

3.代码实现

package com.bb.controller;

import java.io.File;
import java.io.IOException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;




@Controller
public class UserController {

	//上传文件
	@RequestMapping("/addUser")
	@ResponseBody
	public String addUser(String name, MultipartFile upload) throws IllegalStateException, IOException{
		System.out.println(name + "---" + upload.getOriginalFilename());
		//创建文件夹
		File file = new File("d:/files");
		file.mkdir();
		//对文件做处理
		upload.transferTo(new File(file, upload.getOriginalFilename()));
		return "ok";
	}

}

4.上传文件jsp页面和下载文件jsp页面

5.运行结果