这是主要使用到的jar 文件是：spring mvc +apache common-fileuplad
第一步：web.xml 文件。【重点是spring mvc的拦截器和相关监听器】
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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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_2_5.xsd">
<display-name></display-name>
<!-- Spring和mybatis的配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mybatis.xml</param-value>
</context-param>
<!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</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>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止Spring内存溢出监听器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- Spring MVC servlet -->
<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:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
</web-app>
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第二步：spring-mvc 配置文件【重点：spring mvc 视图模式，spring mvc 文件上传限定参数，spring mvc 资源拦截管理和其他】
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<?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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
<context:annotation-config/>
<context:component-scan base-package="com" />
<!--避免IE执行AJAX时，返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->
</list>
</property>
</bean>
<!-- 定义跳转的文件的前后缀 ，视图模式配置-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->
<property name="prefix" value="/backstage/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默认编码 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 文件大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 内存中的最大值 -->
<property name="maxInMemorySize" value="40960" />
</bean>
<!-- 声明DispatcherServlet不要拦截下面声明的目录 -->
<mvc:resources location="/js/" mapping="/js/**" />
<mvc:resources location="/images/" mapping="/images/**"/>
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/common/" mapping="/common/**"/>
</beans>
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第三步：jsp 页面
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<%@ page language="java" pageEncoding="UTF-8"%>
<form action="<%=request.getContextPath()%>/users/add" method="POST" enctype="multipart/form-data">
username: <input type="text" name="username"/><br/>
nickname: <input type="text" name="nickname"/><br/>
password: <input type="password" name="password"/><br/>
yourmail: <input type="text" name="email"/><br/>
yourfile: <input type="file" name="myfiles"/><br/>
<input type="submit" value="添加新用户"/>
</form>
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第四步：spring mvc 控制器代码
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package com.wlsq.controller;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;
import com.wlsq.model.News;
import com.wlsq.service.IUserMapperService;
import com.wlsq.util.Pagination;
@Controller
@RequestMapping(value="/users")
public class UserController {
@Autowired
private IUserMapperService userService;
@RequestMapping(value="/userAll")
public ModelAndView searchNews(HttpServletRequest request,HttpServletResponse response){
ModelAndView mv = null;
try{
mv = new ModelAndView();
int pageSize = Integer
.parseInt(request.getParameter("pageSize") == null ? "10"
: request.getParameter("pageSize"));
int pageNum = Integer
.parseInt(request.getParameter("pageNum") == null ? "1"
: request.getParameter("pageNum"));
Map<String, Object> maps = new HashMap<>();
maps.put("pageSize", pageSize);
maps.put("pageNum", (pageNum-1) * pageSize);
List<News> list =userService.selectAllUsers(maps);
int count = userService.selectCountUsers();
Pagination page = new Pagination(count);
page.setCurrentPage(pageNum);
mv.addObject("pnums", page.getPageNumList());
mv.addObject("currentPage", pageNum);
mv.addObject("pnext_flag", page.nextEnable());
mv.addObject("plast_flag", page.lastEnable());
page.lastPage();
mv.addObject("last_page", page.getCurrentPage());
mv.addObject("count", count);
mv.addObject("pageCount", page.getPages());
if(list !=null && list.size()>0){
//用户存在
mv.addObject("partners", list);
//设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面
mv.setViewName("/users/users");
}else{
//用户存在
mv.addObject("partners", list);
//设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面
mv.setViewName("/users/users");
}
}catch(Exception e){
//设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面
mv.setViewName("/users/users");
}
return mv;
}
@RequestMapping(value="/add", method=RequestMethod.POST)
public String addUser(@RequestParam MultipartFile[] myfiles, HttpServletRequest request) throws IOException{
String username = request.getParameter("username");
String nickname = request.getParameter("nickname");
String password = request.getParameter("password");
String email = request.getParameter("email");
System.out.println("name:"+username);
System.out.println("nickname:"+nickname);
System.out.println("password:"+password);
System.out.println("email:"+email);
//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("========================================");
//如果用的是Tomcat服务器，则文件会上传到\\%TOMCAT_HOME%\\webapps\\YourWebProject\\WEB-INF\\upload\\文件夹中
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 "../../index";
}
}
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记得在WEB-INFO建立存放上传文件目录（upload）
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/zhouzhiwengang/article/details/51055012?locationNum=14&fps=1