springMVC的文件上传
一、工程目录结构
二、web.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" 5 version="4.0"> 6 7 8 <!--字符编码过滤器CharacterEncodingFilter,防止提交表单乱码 9 放在最前面，可以对所有的起作用--> 10 11 <filter> 12 <filter-name>encodingFilter</filter-name> 13 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 14 <init-param> 15 <param-name>encoding</param-name> 16 <param-value>utf-8</param-value> 17 </init-param> 18 </filter> 19 20 <filter-mapping> 21 <filter-name>encodingFilter</filter-name> 22 <url-pattern>/*</url-pattern> 23 </filter-mapping> 24 25 26 <!--前端控制器--> 27 28 <servlet> 29 <servlet-name>dispatcherServlet</servlet-name> 30 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 31 <init-param> 32 <param-name>contextConfigLocation</param-name> 33 <param-value>classpath:spring/springMVC.xml</param-value> 34 </init-param> 35 </servlet> 36 <servlet-mapping> 37 <servlet-name>dispatcherServlet</servlet-name> 38 <url-pattern>/</url-pattern> 39 </servlet-mapping> 40 41 </web-app>
三、springMVC.xml
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" xmlns:p="http://www.springframework.org/schema/p" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 6 7 <!--包扫描器--> 8 <context:component-scan base-package="com.wang.mvc.controller"/> 9 10 <!--内部资源视图解析器--> 11 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" 12 p:prefix="/jsp/" p:suffix=".jsp"/> 13 14 <!-- Commons多文件上传处理器 15 注意：一定要写id="multipartResolver"，否则报错--> 16 17 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 18 <property name="maxUploadSize" value="1024000000"/> 19 </bean> 20 21 22 23 </beans>
四、前端页面
1.login.jsp
1 <%-- 2 Created by IntelliJ IDEA. 3 User: 0 4 Date: 2019/1/3 5 Time: 16:10 6 To change this template use File | Settings | File Templates. 7 --%> 8 <%@ page contentType="text/html;charset=UTF-8" language="java" %> 9 <html> 10 <head> 11 <title>Login</title> 12 </head> 13 <body> 14 Login page... 15 <br> 16 ------单文件上传------- 17 <br> 18 <form action="uploadFile" method="post" enctype="multipart/form-data"> 19 username:<input type="text" name="username"/> 20 <br> 21 file:<input type="file" name="uploadFile" /> 22 <br> 23 <input type="submit" value="上传"/> 24 </form> 25 26 <br> 27 ------多文件上传------- 28 <br> 29 <form action="uploadMoreFile" method="post" enctype="multipart/form-data"> 30 username:<input type="text" name="username"/> 31 <br> 32 file1:<input type="file" name="uploadFile" /> 33 <br> 34 file2:<input type="file" name="uploadFile" /> 35 <br> 36 file3:<input type="file" name="uploadFile" /> 37 <br> 38 <input type="submit" value="上传"/> 39 </form> 40 </body> 41 </html>
2.success.jsp
<%-- Created by IntelliJ IDEA. User: 0 Date: 2019/1/3 Time: 16:40 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Success</title> </head> <body> Success page... <br> 文件上传成功！ </body> </html>
五、UploadFile.java
1 package com.wang.mvc.controller; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 import org.springframework.web.bind.annotation.RequestMethod; 6 import org.springframework.web.bind.annotation.RequestParam; 7 import org.springframework.web.multipart.MultipartFile; 8 9 import javax.servlet.http.HttpServletRequest; 10 import java.io.File; 11 import java.io.IOException; 12 import java.text.SimpleDateFormat; 13 import java.util.Date; 14 15 @Controller 16 public class UploadFile { 17 18 @RequestMapping(value = "uploadFile",method = RequestMethod.POST) 19 public String uploadFile(@RequestParam MultipartFile uploadFile, 20 HttpServletRequest request) throws IOException { 21 22 String username = request.getParameter("username"); 23 System.out.println("username = " + username); 24 String fileName = uploadFile.getOriginalFilename(); 25 String targetPath = request.getSession().getServletContext().getRealPath("uploadFile"); 26 SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd-hh-mm-ss"); 27 String datetime = simpleDateFormat.format(new Date()); 28 File file = new File(targetPath,datetime + "_" + System.nanoTime() + "_" + fileName); 29 uploadFile.transferTo(file); 30 return "success"; 31 } 32 33 @RequestMapping(value = "uploadMoreFile",method = RequestMethod.POST) 34 //注意：一定要加上@RequestParam("uploadFile")来关联form表单的name属性值，否则上传文件不起作用 35 public String uploadMoreFile(@RequestParam("uploadFile") MultipartFile[] uploadFiles,HttpServletRequest request) throws IOException { 36 37 String username = request.getParameter("username"); 38 System.out.println("username = " + username); 39 for(MultipartFile uploadFile:uploadFiles){ 40 String fileName = uploadFile.getOriginalFilename(); 41 String realPath = request.getSession().getServletContext().getRealPath("upload/images"); 42 SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd-hh-mm-ss"); 43 String getDateTime = simpleDateFormat.format(new Date()); 44 File file = new File(realPath, getDateTime + "_" + System.nanoTime() + "_" + fileName); 45 uploadFile.transferTo(file); 46 } 47 48 return "success"; 49 } 50 51 52 }
六、效果图
七、测试
1.测试单文件上传
2.多文件上传
八、恭喜你，成功了！
