1...pom.xml
1 <dependency> 2 <groupId>commons-fileupload</groupId> 3 <artifactId>commons-fileupload</artifactId> 4 <version>1.3.1</version> 5 </dependency>
2...上传xml 配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 12 <!--开启注解 扫描包--> 13 <context:component-scan base-package="com.wsc"></context:component-scan> 14 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 15 <property name="prefix" value="/WEB-INF/"></property> 16 <property name="suffix" value=".jsp"></property> 17 </bean> 18 <!-- 引入注解驱动--> 19 <mvc:annotation-driven></mvc:annotation-driven> 20 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 21 <property name="maxUploadSize" value="5242880"/> 22 23 </bean> 24 </beans>
3...web.xml
1 <!DOCTYPE web-app PUBLIC 2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 <web-app> 5 <display-name>Archetype Created Web Application</display-name> 6 <filter> 7 <filter-name>characterEncodingFilter</filter-name> 8 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 9 <init-param> 10 <param-name>encoding</param-name> 11 <param-value>utf-8</param-value> 12 </init-param> 13 </filter> 14 <filter-mapping> 15 <filter-name>characterEncodingFilter</filter-name> 16 <url-pattern>/*</url-pattern> 17 </filter-mapping> 18 <servlet> 19 <servlet-name>DispatcherServlet</servlet-name> 20 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 21 <init-param> 22 <param-name>contextConfigLocation</param-name> 23 <param-value>classpath:springmvc.xml</param-value> 24 </init-param> 25 <!-- 启动tomcat按照顺序加载--> 26 <load-on-startup>1</load-on-startup> 27 </servlet> 28 <servlet-mapping> 29 <servlet-name>DispatcherServlet</servlet-name> 30 <url-pattern>/</url-pattern> 31 </servlet-mapping> 32 33 </web-app>
4...jsp 代码
1 <%-- 2 Created by IntelliJ IDEA. 3 User: Administrator 4 Date: 2019/7/9 5 Time: 10:10 6 To change this template use File | Settings | File Templates. 7 --%> 8 <%@ page isELIgnored="false" contentType="text/html;charset=UTF-8" language="java" %> 9 <html> 10 <head> 11 <title>Title</title> 12 </head> 13 <body> 14 <a href="${pageContext.request.contextPath}/test/student1">请求1</a> 15 <a href="${pageContext.request.contextPath}/test/student">请求2</a> 16 <form action="${pageContext.request.contextPath}/test/student" method="post"> 17 <input type="hidden" name="id" value="1"><br> 18 <input type="submit" value="提交"> 19 </form> 20 <form action="${pageContext.request.contextPath}/test/testUpload" method="post" enctype="multipart/form-data"><!--必须设置enctype="multipart/form-data"-->
21 姓名：<input type="text" name="userName"><br/>
22 <input type="file" name="uploadFile"><br/>
23 <input type="submit" value="上传"><br/>
24 </form>
25 </body>
26 </html>
name值与java代码的参数一致
5...java代码
1 package com.wsc.servlet; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 import org.springframework.web.multipart.MultipartFile; 6 7 import javax.servlet.http.HttpServletRequest; 8 import java.io.File; 9 import java.io.IOException; 10 import java.util.UUID; 11 12 /** 13 * @version 1.0 14 * @ClassName UploadController 15 * @Description TODO 16 * @Author WSC 17 * @Date 2019/7/11 10:16 18 **/ 19 @Controller 20 @RequestMapping("/test") 21 public class UploadController { 22 @RequestMapping("/testUpload") 23 public String testUpload(String userName, MultipartFile uploadFile, HttpServletRequest request){ 24 // 1 路径 25 String realPath = request.getSession().getServletContext().getRealPath("/upload"); 26 File realFile = new File(realPath); 27 if(!realFile.exists()){ 28 realFile.mkdirs(); 29 } 30 //2 文件的名称 31 String replace = UUID.randomUUID().toString().replace("-", ""); 32 // 获取文件的真实名字 33 String originalFilename = uploadFile.getOriginalFilename(); 34 System.out.println(originalFilename); 35 // 唯一的名字 36 String realName=replace+originalFilename; 37 System.out.println(realName); 38 try { 39 // 文件上传 40 uploadFile.transferTo(new File(realFile,realName)); 41 } catch (IOException e) { 42 e.printStackTrace(); 43 } 44 return "show"; 45 } 46 }