springMVC文件上传优化
1. 新建web project
2. 填 jar,注意新加入两个上传文件的jar, commons-io, commons-fileupload
3. 改写web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <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*:config/spring-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <filter> <filter-name>characterEncodingFilter</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>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
4. 新增config包, 新建spring-servlet.xml
新增了上传文件需要的bean
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <!-- 注解扫描包 --> <context:component-scan base-package="com.tgb.web.controller" /> <!-- 开启注解 --> <mvc:annotation-driven/> <!-- 静态资源访问 --> <mvc:resources location="/img/" mapping="/img/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <mvc:resources location="/css/" mapping="/css/**"/> <!-- ViewResolver 视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 上传文件 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="UTF-8"/> <property name="maxUploadSize" value="1048576000"/> <property name="maxInMemorySize" value="40960"/> </bean> </beans>
5. 写controller方法, uploadController.java
package com.tgb.web.controller; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.Iterator; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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; import org.springframework.web.multipart.MultipartHttpServletRequest; import org.springframework.web.multipart.commons.CommonsMultipartFile; import org.springframework.web.multipart.commons.CommonsMultipartResolver; @Controller @RequestMapping("/file") public class UploadController { @RequestMapping("/upload") public String upload(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest request) throws IOException{ System.out.println("filename--->"+file.getOriginalFilename()); if(!file.isEmpty()){ try { FileOutputStream os = new FileOutputStream("D:/"+new Date().getTime()+file.getOriginalFilename()); InputStream in = file.getInputStream(); int b = 0; while((b=in.read())!=-1){ os.write(b); } os.flush(); os.close(); in.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return "/success"; } @RequestMapping("/upload2") public String upload2(HttpServletRequest request, HttpServletResponse response) throws IllegalStateException, IOException{ CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext()); if(multipartResolver.isMultipart(request)){ MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request; Iterator<String> iter = multiRequest.getFileNames(); if(iter.hasNext()){ MultipartFile file = multiRequest.getFile((String)iter.next()); if(file!=null){ String fileName="demoUpload"+file.getOriginalFilename(); String path = "D:/" + fileName; File localFile = new File(path); file.transferTo(localFile); } } } return "/success"; } @RequestMapping("/toUpload") public String toUpload(){ return "/upload"; } }
6. 写jsp文件, upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <script type="text/javascript" src="../js/jquery-1.4.2.min.js"></script> <title>My JSP 'upload.jsp' starting page</title> </head> <body> <h> 添加用户 </h> <br> <form name="fileForm" action="/springMVCUpload/file/upload2" method="post" enctype="multipart/form-data"> 选择文件: <input type="file" name="file"> <input type="submit" value="上传"> </form> </body> </html>
还有succuss.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <script type="text/javascript" src="../js/jquery-1.4.2.min.js"></script> <title></title> </head> <body> 上传文件成功 </body> </html>
7. 地址栏验证
http://localhost:8080/springMVCUpload/file/toUpload