忘了从哪找的配置了，先记下来以后用
记得创建工程后先导入springmvc文件上传所用的jar包，以下是我用到的：
目录结构：
web.xml配置：
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3_0" xmlns="http://java.sun.com/xml/ns/javaee http://www.springmodules.org/schema/cache/springmodules-cache.xsd http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd" 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> <!-- 统一编码 --> <filter> <filter-name>charsetEncoding</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>charsetEncoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/springmvc-servlet.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>springmvc-servlet.xml配置：
<?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" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd"> <!-- 扫描路径 --> <context:component-scan base-package="com.test.controller" > <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 配置根视图 --> <mvc:view-controller path="/" view-name="index"/> <!-- 激活基于注解的配置 @RequestMapping, @ExceptionHandler,数据绑定 ,@NumberFormat , @DateTimeFormat ,@Controller ,@Valid ,@RequestBody ,@ResponseBody等 --> <mvc:annotation-driven /> <!-- 静态资源配置 --> <mvc:resources location="/assets/" mapping="/assets/**"></mvc:resources> <!-- 视图层配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 多部分文件上传 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="104857600" /> <property name="maxInMemorySize" value="4096" /> <property name="defaultEncoding" value="UTF-8"></property> </bean> </beans>前端代码： <form action="./uploadFile/upload" method="POST" enctype="multipart/form-data"> 文件1: <input type="file" name="myfiles"/><br/> 文件2: <input type="file" name="myfiles"/><br/> 文件3: <input type="file" name="myfiles"/><br/> <input type="submit" value="上传"/> </form>后端controller内代码;
package com.test.controller; import java.io.File; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import org.apache.commons.io.FileUtils; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; /** * 文件上传处理类 * <功能详细描述> * * @author Administrator * @version [版本号, 2014年3月6日] * @see [相关类/方法] * @since [产品/模块版本] */ @Component @Scope("prototype") @RequestMapping("/uploadFile") public class HelloController { @RequestMapping("/upload") public String upload(@RequestParam MultipartFile[] myfiles,HttpServletRequest request) throws IOException { //如果只是上传一个文件，则只需要MultipartFile类型接收文件即可，而且无需显式指定@RequestParam注解 //如果想上传多个文件，那么这里就要用MultipartFile[]类型来接收文件，并且还要指定@RequestParam注解 //并且上传多个文件时，前台表单中的所有<input type="file"/>的name都应该是myfiles，否则参数里的myfiles无法获取到所有上传的文件 for(MultipartFile myfile : myfiles){ if(myfile.isEmpty()){ System.out.println("文件未上传"); }else{ System.out.println("文件长度: " + myfile.getSize()); System.out.println("文件类型: " + myfile.getContentType()); System.out.println("文件名称: " + myfile.getName()); System.out.println("文件原名: " + myfile.getOriginalFilename()); System.out.println("========================================"); String realPath = request.getSession().getServletContext().getRealPath("/WEB-INF/upload"); //这里不必处理IO流关闭的问题，因为FileUtils.copyInputStreamToFile()方法内部会自动把用到的IO流关掉，我是看它的源码才知道的 FileUtils.copyInputStreamToFile(myfile.getInputStream(), new File(realPath, myfile.getOriginalFilename())); } } return "uploadSuccess"; } } 这里的后端代码中@Component和@Scope("prototype")可以省略换成@Controller
