SpringMVC文件上传

1、搭建Web项目

（1）加入文件上传所需依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.springmvc</groupId>    <artifactId>springmvc-demo</artifactId>    <packaging>war</packaging>    <version>1.0-SNAPSHOT</version>    <name>springmvc-demo Maven Webapp</name>    <url>http://maven.apache.org</url>    <dependencies>        <!--使用单元测试所需jar包-->        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.12</version>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>4.3.8.RELEASE</version>        </dependency>        <!--spring相关包-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>4.3.8.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>4.3.8.RELEASE</version>        </dependency>        <!--jstl-->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jstl</artifactId>            <version>1.2</version>        </dependency>        <!--servlet-api-->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>javax.servlet-api</artifactId>            <version>3.1.0</version>        </dependency>        <!--fileupload-->        <dependency>            <groupId>commons-fileupload</groupId>            <artifactId>commons-fileupload</artifactId>            <version>1.3.2</version>        </dependency>    </dependencies>    <build>        <finalName>springmvc-demo</finalName>    </build></project>

（2）web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app 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"         version="3.0">    <servlet>        <servlet-name>springmvc</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <!--配置要加载的XML文件-->            <param-name>contextConfigLocation</param-name>            <param-value>classpath:springmvc-servlet.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping></web-app>

（3）springmvc-servlet.xml文件

<?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: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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">    <!--自动扫描-->    <context:component-scan base-package="com.springmvc.*"></context:component-scan>    <mvc:annotation-driven></mvc:annotation-driven>    <!-- ViewResolver -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>        <property name="prefix" value="/WEB-INF/views/"/>        <property name="suffix" value=".jsp"/>    </bean>    <!--文件上传-->    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <!--编码-->        <property name="defaultEncoding" value="UTF-8"></property>    </bean></beans>

（4）项目结构

2、创建IndexController，创建fileupload方法来接收上传文件的请求，MultipartFile用来接收文件

@Controllerpublic class IndexController {    @RequestMapping("/index")    public String index(){        return "index";    }    @RequestMapping("/fileupload")    public String fileupload(@RequestParam("file") MultipartFile multipartFile , HttpServletRequest request,RedirectAttributes attr){//        String filepath=request.getSession().getServletContext().getRealPath("/");//获取项目绝对路径        String filepath="/Users/shanmenglu/IdeaProjects/springmvc-demo/upload";//文件存储路径        File file=new File(filepath,multipartFile.getOriginalFilename());        try {            multipartFile.transferTo(file);            attr.addFlashAttribute("success","上传成功！");//使用RedirectAttributes在重定向时可以传递参数        } catch (IOException e) {            e.printStackTrace();        }        return "redirect:index";    }}

3、index.jsp

<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %><html><body><h2>fileupload</h2><form method="post" action="/fileupload" enctype="multipart/form-data">    上传图片: <input type="file" name="file">    <input type="submit" value="submit"></form>${success}</body></html>

4.测试

上传文件

到项目下upload目录查看

代码下载：http://download.csdn.net/detail/lom9357bye/9864067