第一个SpringMVC程序

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1、在核心配置文件启动注解扫描；

<?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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd"><!-- 启动SpringMVC的注解 --><mvc:annotation-driven></mvc:annotation-driven><!-- 组件扫描器 支持ant风格 --><context:component-scan base-package="com.**.controller"></context:component-scan></beans>

2、web.xml文件中配置DispatcherServlet，注意servlet-name命名（与核心配置文件名称有关）；

<?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">  <display-name>HelloSpringMVC</display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>    <servlet>        <servlet-name>hello</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>hello</servlet-name>        <!-- 所有资源的访问必须要经过DispatcherServlet处理 -->        <url-pattern>/</url-pattern>    </servlet-mapping></web-app>

3、新建一个简单的Controller类；

package com.slz.hello.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;@Controller@RequestMapping("/slz")public class HelloController {@RequestMapping(path={"/hello","/slz.html","/*/benboba.php","/**/baboben.aspx","/ab*.htm"})public ModelAndView hello(){System.out.println("Hello World!");return null;}}

4、启动此WEB项目，查看输出控制台

注意：Console中“ Mapped "{[/slz/hello || /slz/slz.html || /slz/*/benboba.php || /slz/**/baboben.aspx || /slz/ab*.htm]}" onto public org.springframework.web.servlet.ModelAndView com.slz.hello.controller.HelloController.hello()”

合法访问路径（以下访问路径，此程序均可在控制台输出“Hello World!”）：

http://localhost:8080/mvc/slz/hello

http://localhost:8080/mvc/slz/slz.html

http://localhost:8080/mvc/slz/qw/benboba.php

http://localhost:8080/mvc/slz/qw/baboben.aspx

http://localhost:8080/mvc/slz/qw/ab/baboben.aspx

http://localhost:8080/mvc/slz/qw/ab/cd/baboben.aspx

http://localhost:8080/mvc/slz/ab.htm

http://localhost:8080/mvc/slz/abcd.htm

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