SpringMVC最小demo创建

项目整体目录简图：

用到的一些jar：

1、首先配置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_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>spring mvc</display-name>  <welcome-file-list>  <welcome-file>index.jsp</welcome-file>    <welcome-file>index.html</welcome-file>    <welcome-file>default.html</welcome-file>  </welcome-file-list>  <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*:config/mvc-control.xml</param-value>            <!--举个简单的例子，在我的web.xml中是这么定义的：classpath*:META-INF/spring/application-context.xml 那么在META-INF/spring这个文件夹底下的所有application-context.xml都会被加载到上下文中，这些包括META-INF/spring文件夹底下的 application-context.xml，            META-INF/spring的子文件夹的application-context.xml以及jar中的application-context.xml。如果我在web.xml中定义的是：classpath:META-INF/spring/application-context.xml那么只有META-INF/spring底下的application-context.xml会被加载到上下文中。  -->    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping>  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>   <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>        classpath*:config/mvc-control.xml,        classpath*:config/applicationContext.xml    </param-value>  </context-param>  <listener>    <listener-class>org.springframework.web.context.ContextCleanupListener</listener-class>  </listener>  <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>    </filter>    <filter-mapping>      <filter-name>CharacterEncodingFilter</filter-name>      <url-pattern>/*</url-pattern>    </filter-mapping> </web-app>

2、配置config/mvc-control.xml：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="        http://www.springframework.org/schema/beans             http://www.springframework.org/schema/beans/spring-beans-4.1.xsd        http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-4.1.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->    <!-- 此处不需修改 -->    <context:component-scan base-package="com.axb.cheney.controller" />    <mvc:annotation-driven />    <!--Spring3.1开始的注解 HandlerMapping -->      <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>      <!--Spring3.1开始的注解 HandlerAdapter -->      <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>          <property name="prefix">            <value>/WEB-INF/pages/</value>        </property>        <property name="suffix">            <value>.jsp</value>        </property>    </bean></beans>

3、配置config/applicationContext.xml：（里面一开始是没有什么配置的，只是为了后面的定时任务服务的）

<?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:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"    xmlns:aop="http://www.springframework.org/schema/aop"    xsi:schemaLocation="http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-4.1.xsd       http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-4.1.xsd      http://www.springframework.org/schema/tx    http://www.springframework.org/schema/tx/spring-tx-4.1.xsd    http://www.springframework.org/schema/task     http://www.springframework.org/schema/task/spring-task-4.1.xsd     http://www.springframework.org/schema/aop    http://www.springframework.org/schema/aop/spring-aop-4.1.xsd"></beans>

4、HelloWorldController.java ：

package com.axb.cheney.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;@Controller@RequestMapping("/user")    // 或 @RequestMapping ①将一个POJO类声明为处理器  @RequestMapping(value="hello") public class HelloWorldController {      @RequestMapping("/hello")    public ModelAndView helloWorld() {          //1、收集参数                  http://localhost:8085/springmvc_control/user/a/hello        //2、绑定参数到命令对象          //3、调用业务对象          //4、选择下一个页面         ModelAndView mv = new ModelAndView();          //添加模型数据 可以是任意的POJO对象         mv.addObject("message", "Hello World! This is my first spring demo");          //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("hellotest/hello");         // return new ModelAndView("hellotest/hello","message", "Hello World! This is my first spring demo");          return mv;    }  } 

5、/springmvc/WebContent/WEB-INF/pages/hellotest/hello.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!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>article list</title></head><body>    ${message}  </body></html>

6、/springmvc/WebContent/index.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!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>article list</title></head><body>    index pages,welcome to you!!!     <div><a href="http://localhost:8085/springmvc/user/hello">to test the helloWorldController</a></div></body></html>

6、运行测试：

运行后弹出index.jsp,点击超链接后，实际访问的是：http://localhost:8085/springmvc/user/hello

最终显示结果，至此最简单的demo创建成功，下一节将在此基础上添加注解式的定时任务。