Spring MVC web.xml文件分析说明

Spring MVC web.xml文件分析说明

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	version="3.1">

	<!-- //1.提供GUI工具可能会用来标记这个特定的Web应用的一个名称 -->
	<display-name>CESmart</display-name>

	<!-- //1.用来声明应用范围(整个WEB项目)内的上下文初始化参数。 -->
	<!-- //2.param-name,为key -->
	<!-- //3.param-value,为value -->
	<context-param>
		<param-name>WebApp</param-name>
		<param-value>com.proserver</param-value>
	</context-param>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/configs/spring/applicationContext*.xml</param-value>
	</context-param>

	<!-- //1.初始化spring环境，用到context-param中的 contextConfigLocation -->
	<!-- //2.web容器使用ContextLoaderListener这个实例来完成SpringMVC的初始化工作，就是建立工作环境（上下文） -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- //1.容器(Tomcat)的Context指定的servlet -->
	<!-- //2.servlet的初始化和DispatcherServlet建立相关的映射关系 -->
	<servlet>
		<servlet-name>SpringMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<!-- //1.DispatcherServlet运行时用到的参数, -->
			<!-- //2.DispatcherServlet要扫描那些名找controler,并建立映射表关系 -->
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/configs/spring/mvc-demo-servlet.xml,/WEB-INF/configs/spring/applicationContext*.xml
            </param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<!-- //1.容器(Tomcat)的Context指定的servlet的URL -->
	<!-- //2.url-pattern 定义匹配映射过滤 (可以有多个) -->
	<!-- //(1).以“/”开头，并以"/*"结尾的字符串用于路径的映射。如“/xing/*” -->
	<!-- //(2).以"*."开头，用于做扩展的映射。(扩展名匹配) -->
	<!-- //(3).一个仅包含"/"的字符串，将当前这个servlet明确为应用的默认servlet。如“/xing/*” -->
	<!-- //(4).其他都是精确匹配。如“/TestConnect” -->
	<servlet-mapping>
		<servlet-name>SpringMVC</servlet-name>
		<!-- <url-pattern>/</url-pattern> -->
		<url-pattern>/xing/*</url-pattern>
	</servlet-mapping>

	<listener>
		<description>HttpSessionListener监听器</description>
		<listener-class>com.proserver.common.controller.Test.Listener.MyServletContextListener</listener-class>
	</listener>

	<!-- //1.过滤器配置 -->
	<filter>
		<filter-name>filterTest3</filter-name>
		<filter-class>com.proserver.common.controller.Test.filter.FilterTest3</filter-class>
		<init-param>
			<param-name>userName</param-name>
			<param-value>HelloWorld</param-value>
		</init-param>
	</filter>
	<!-- //1.过滤器规则配置 -->
	<filter-mapping>
		<filter-name>filterTest3</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>