web.xml基本配置。

<?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" id="WebApp_ID" version="3.1">

	<display-name>webProject</display-name>

	<!-- 应用路径 -->
	<context-param>
		<param-name>webAppRootKey</param-name>
		<param-value>spring.webapp.root</param-value>
	</context-param>

	<!-- Log4J 配置 -->
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>classpath:log4j.properties</param-value>
	</context-param>
	<context-param>
		<param-name>log4jRefreshInterval</param-name>
		<param-value>60000</param-value>
	</context-param>

	<!--Spring上下文 配置 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring-config.xml</param-value>
	</context-param>

	<!-- 字符集 过滤器 -->
	<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>

	<!-- Spring 监听器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<listener>
		<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
	</listener>
	<servlet>
		<description>spring mvc servlet</description>
		<servlet-name>springMvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<description>spring mvc 配置文件</description>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springMvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<!-- session超时设置30分钟 -->
	<session-config>
		<session-timeout>1</session-timeout>
	</session-config>
 
	<!-- 错误页面映射 -->
	<error-page>
		<error-code>404</error-code>
		<location>/WEB-INF/webpage/error/404.jsp</location>
	</error-page>
	<error-page>
		<error-code>400</error-code>
		<location>/WEB-INF/webpage/error/400.jsp</location>
	</error-page>
	<error-page>
		<error-code>500</error-code>
		<location>/WEB-INF/webpage/error/500.jsp</location>
	</error-page>
	<error-page>
		<error-code>503</error-code>
		<location>/WEB-INF/webpage/error/503.jsp</location>
	</error-page>
	<error-page>
		<exception-type>java.lang.Exception</exception-type>
		<location>/WEB-INF/webpage/error/error.jsp</location>
	</error-page>
</web-app>