Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring 框架提供了构建 Web 应用程序的全功能 MVC 模块。使用 Spring 可插入的 MVC 架构，从而在使用Spring进行WEB开发时，可以选择使用Spring的SpringMVC框架或集成其他MVC开发框架，如Struts1，Struts2等。

框架

编辑

　　通过策略接口，Spring 框架是高度可配置的，而且包含多种视图技术，例如 JavaServer Pages（JSP）技术、Velocity、Tiles、iText和POI。Spring MVC 框架并不知道使用的视图，所以不会强迫您只使用 JSP 技术。Spring MVC 分离了控制器、模型对象、过滤器以及处理程序对象的角色，这种分离让它们更容易进行定制。

优点

编辑

　　Lifecycle for overriding binding, validation, etc，易于同其它View框架（Tiles等）无缝集成，采用IOC便于测试。
它是一个典型的教科书式的mvc构架，而不像struts等都是变种或者不是完全基于mvc系统的框架，对于初学者或者想了解mvc的人来说我觉得 spring是最好的，它的实现就是教科书！第二它和tapestry一样是一个纯正的servlet系统，这也是它和tapestry相比 struts所具有的优势。而且框架本身有代码，看起来容易理解。
 
搭建环境：

一、导包

二、配置

首先编写spring的配置文件　　spring-all.xml

<?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-4.3.xsd

        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

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

    <mvc:annotation-driven />

    <!-- 视图解析器 -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/page/"></property>

        <property name="suffix" value=".jsp"></property>

    </bean>

    <!-- 文件上传需要配置的类 -->

    <bean id="multipartResolver"

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

        <!-- 文件总大小(单位是b) -->

        <property name="maxUploadSize" value="10000000"></property>

        <!-- 单个文件大小 -->

        <property name="maxUploadSizePerFile" value="2000000"></property>

        <!-- 字符集 -->

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

    </bean>

    <!-- 转换编码为utf-8的bean -->

    <bean

        class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">

        <property name="messageConverters">

            <list>

                <bean

                    class="org.springframework.http.converter.StringHttpMessageConverter">

                    <property name="supportedMediaTypes">

                        <list>

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

                        </list>

                    </property>

                </bean>

            </list>

        </property>

    </bean>

</beans>

编写web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

    id="WebApp_ID" version="3.0">

    <filter>

        <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>

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

    </filter-mapping>

    <!-- The front controller of this Spring Web application, responsible for handling all application requests -->

    <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-all.xml</param-value>

        </init-param>

        <!-- 启动时加载 -->

        <load-on-startup>1</load-on-startup>

    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->

    <servlet-mapping>

        <servlet-name>springmvc</servlet-name>

        <url-pattern>*.do</url-pattern>

    </servlet-mapping>

</web-app>

定义一个实体类

package com.model;

import java.util.Date;

import org.springframework.format.annotation.DateTimeFormat;

public class Person {

    private Integer id;

    private String name;

    @DateTimeFormat(pattern="yyyyMMdd")

    private Date birthday;

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public Date getBirthday() {

        return birthday;

    }

    public void setBirthday(Date birthday) {

        this.birthday = birthday;

    }

    @Override

    public String toString() {

        return "Person [id=" + id + ", name=" + name + ", birthday=" + birthday + "]";

    }

}

编写具体实现的控制文件 PersonController.java

package com.controller;

import java.io.File;

import java.io.IOException;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;

import org.springframework.format.annotation.DateTimeFormat;

import org.springframework.http.HttpHeaders;

import org.springframework.http.HttpStatus;

import org.springframework.http.MediaType;

import org.springframework.http.ResponseEntity;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

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.bind.annotation.ResponseBody;

import org.springframework.web.multipart.MultipartFile;

import com.model.Person;

@Controller

public class PersonController {

    //页面跳转

    @RequestMapping("test")

    public String test(){

        return "success";

    }

    //传值，字符串和数字

    @RequestMapping("test0/{ss}")

    public String test0(@PathVariable("ss")String str){

        System.out.println(str);

        //System.out.println(num);

         return "error";

    }

    @RequestMapping(value="test1",method={RequestMethod.POST,RequestMethod.GET})

    public String test1(@RequestParam("str")String str,@RequestParam("num")int num){

        System.out.println(str);

        System.out.println(num);

         return "error";

    }

    @RequestMapping(value="test2")

    public String test2(@RequestParam("str")String str,@RequestParam("num")int num){

        System.out.println(str);

        System.out.println(num);

         return "error";

    }

    //传日期型参数

    @RequestMapping("test3")

    public String test3(@RequestParam("date")@DateTimeFormat(pattern="yyyyMMdd")Date date){

        System.out.println(date);

        return "success";

    }

    //传递实体类

    @RequestMapping("test4")

    public String test4(Person p){

        System.out.println(p);

        return "success";

    }

    //传递数组

    @RequestMapping("test5")

    public String test5(@RequestParam("strs[]")String[] strs){

        for(String s:strs){

            System.out.println(s);

        }

        return "success";

    }

    //带日期型参数的实体类

    @RequestMapping("test6")

    public String test6(Person p){

        System.out.println(p);

        return "success";

    }

    @ResponseBody

    @RequestMapping("test7")

    public String test7(Person p){

        System.out.println(p);

        String json = "{\"success\":true}";

        return json;

    }

    //@ResponseBody

    @RequestMapping("test8")

    public String test8(@RequestParam("file")MultipartFile file,HttpServletRequest request){

        String path = request.getServletContext().getRealPath("/files");

        String fileName = file.getOriginalFilename();

        System.out.println(fileName);

        fileName+=new Date().getTime();

        File filenew  = new File(path+"/"+fileName);

        try {

            file.transferTo(filenew);

        } catch (IllegalStateException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return "success";

    }

    @RequestMapping("testm")

    public String testm(@RequestParam("file")MultipartFile[] files,HttpServletRequest request){

        String path = request.getServletContext().getRealPath("/files");

            for(int i=0;i<files.length;i++){

                String fileName = files[i].getOriginalFilename();

                System.out.println(fileName);

                fileName+=new Date().getTime();

                File filenew  = new File(path+"/"+fileName);

                try {

                    files[i].transferTo(filenew);

                } catch (IllegalStateException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                } catch (IOException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        return "success";

    }

    @RequestMapping(value = "test9")

    // public ResponseEntity<byte[]> download(String fileName, File file) throws

    // IOException {

    public ResponseEntity<byte[]> download(HttpServletRequest request, @RequestParam("filename") String filename)

            throws IOException {

        //filename = new String(filename.getBytes("UTF-8"), "iso-8859-1");// 为了解决中文名称乱码问题

        String path = request.getServletContext().getRealPath("/files");

        path += "\\" + filename;

        File file = new File(path);

        HttpHeaders headers = new HttpHeaders();

        headers.setContentDispositionFormData("attachment",filename);

        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);

        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file), headers, HttpStatus.CREATED);

    }

}

定义一个jsp页面进行显示

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Insert title here</title>

<script type="text/javascript" src="js/jquery-1.11.2.min.js"></script>

</head>

<body>

<a href="test.do">测试</a>

<a href="test0/haha.do">测试0</a><br>

<a href="test1.do?str=nihao&num=123">测试1</a><br>

<form action="test2.do" method="post">

    <input type="text" name="str">

    <input type="text" name="num">

    <input type="submit" value="提交">

</form><br>

<a href="test3.do?date=20170419">测试2</a><br>

<form action="test4.do" method="post">

    <input type="text" name="id">

    <input type="text" name="name">

    <input type="submit" value="提交">

</form><br>

<form action="test5.do" method="post">

    <input type="text" name="strs[]">

    <input type="text" name="strs[]">

    <input type="submit" value="提交">

</form><br>

<form action="test6.do" method="post">

    <input type="text" name="id">

    <input type="text" name="name">

    <input type="text" name="birthday">

    <input type="submit" value="提交">

</form><br>

<form id="form">

    <input type="text" name="id">

    <input type="text" name="name">

    <input type="text" name="birthday">

    <input id="btn" type="button" value="提交">

</form><br>

<form action="test8.do" method="post" enctype="multipart/form-data">

    <input type="file" name="file" />

    <input type="submit" value="文件上传" />

</form><br>

<form action="testm.do" method="post" enctype="multipart/form-data">

    <input multiple="true" type="file" name="file" />

    <input type="submit" value="文件上传" />

</form><br>

<a href="test9.do?filename=jsonarray.rb">下载测试-jsonarray.rb</a><br>

<a href="test9.do?filename=content.docx">下载测试-content.docx</a><br>

<script type="text/javascript">

    $(function(){

        $("#btn").click(function(){

            var f = $("#form").serializeArray();

            $.ajax({

                url:"test7.do",

                data:f,

                dataType:"json",

                type:"POST",

                success:function(d){

                    console.log(d);

                },

                error:function(msg){

                    console.log(msg.responseText);

                }

            });

        });

    });

    /* $(function(){

        $("#btn_upload").click(function(){

            var f = $("#formupload").serializeArray();

            $.ajax({

                url:"test8.do",

                data:f,

                dataType:"json",

                type:"POST",

                success:function(d){

                    console.log(d);

                },

                error:function(msg){

                    console.log(msg.responseText);

                }

            });

        });

    }); */

</script>

</body>

</html>

实现效果如下：

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