spring mvc实现文件上传并携带其他参数的示例

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】

<?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>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-mybatis.xml</param-value>

</context-param>

<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>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<listener>

<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

</listener>

<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>

<url-pattern>/</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>/index.jsp</welcome-file>

</welcome-file-list>

</web-app>

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】

<?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">

<mvc:annotation-driven />

<mvc:default-servlet-handler/>

<context:annotation-config/>

<context:component-scan base-package="com" />

<bean id="mappingJacksonHttpMessageConverter"

class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">

<property name="supportedMediaTypes">

<list>

<value>text/html;charset=UTF-8</value>

</list>

</property>

</bean>

<bean

class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

<property name="messageConverters">

<list>

<ref bean="mappingJacksonHttpMessageConverter" /> 

</list>

</property>

</bean>

<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">

<property name="defaultEncoding" value="utf-8" />

<property name="maxUploadSize" value="10485760000" />

<property name="maxInMemorySize" value="40960" />

</bean>

<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>

第三步：jsp 页面

<%@ 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>

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";

}

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快网idc。

原文链接：http://blog.csdn.net/zhouzhiwengang/article/details/51055012?locationNum=14&fps=1

spring mvc实现文件上传并携带其他参数的示例

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