spring mvc实现文件上传并携带其他参数的示例

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】

xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://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">

contextConfigLocation

classpath:spring-mybatis.xml

encodingFilter

org.springframework.web.filter.CharacterEncodingFilter

encoding

UTF-8

encodingFilter

/*

org.springframework.web.context.ContextLoaderListener

org.springframework.web.util.IntrospectorCleanupListener

SpringMVC

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:spring-mvc.xml

1

SpringMVC

/

/index.jsp

xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://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">

contextConfigLocation

classpath:spring-mybatis.xml

encodingFilter

org.springframework.web.filter.CharacterEncodingFilter

encoding

UTF-8

encodingFilter

/*

org.springframework.web.context.ContextLoaderListener

org.springframework.web.util.IntrospectorCleanupListener

SpringMVC

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:spring-mvc.xml

1

SpringMVC

/

/index.jsp

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】

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:p="http://springframework.org/schema/p"

xmlns:context="http://springframework.org/schema/context"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans-3.1.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.1.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-4.0.xsd">

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

text/html;charset=UTF-8

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

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:p="http://springframework.org/schema/p"

xmlns:context="http://springframework.org/schema/context"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans-3.1.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.1.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-4.0.xsd">

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

text/html;charset=UTF-8

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

text/html;charset=UTF-8

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

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

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

第三步：jsp 页面

<%@ page language="java" pageEncoding="UTF-8"%>

username:

nickname:

password:

yourmail:

yourfile:

第四步：spring mvc 控制器代码

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 maps = new HashMap<>();

maps.put("pageSize", pageSize);

maps.put("pageNum", (pageNum-1) * pageSize);

List 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）

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