使用Spring MVC构建Web应用程序

1、跟踪Spring MVC的请求




2、搭建Spring MVC
Spring MVC的核心是DispatcherServlet，充当Spring MVC的前端控制器。
在web.xml中

    <servlet>
        <servlet-name>example</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>


    <servlet-mapping>
        <servlet-name>example</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

创建example-servlet.xml文件，DispacherServlet将用它来创建应用上下文。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    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.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">


<!-- 处理静态资源请求-->
<mvc:resources mapping="/resources/**" location="/resources/*"/>
</beans>

2、编写基本的控制器
2.1、配置注解驱动

<mvc:annotation-driven />

2.2、自动扫描装配

<context:component-scan base-package="com.test.app.mvc" />

2.3解析视图

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
  <property name="prefix" value="/WEB-INF/jsp/"/>
  <property name="suffix" value=".jsp"/>
</bean>