第2.2章 WEB系统最佳实践Web.xml配置

web.xml包含el表达式配置、激活Tomcat的defaultServlet来处理静态文件配置、kaptcha验证码 配置、spring配置、字符集过滤器、shiro权限过滤、CORS跨域访问配置、Gzip静态过滤 配置、特殊字符过滤器、SpringMVC配置、Hessian配置等
CORS配置依赖

<dependency>
			<groupId>com.thetransactioncompany</groupId>
			<artifactId>cors-filter</artifactId>
		</dependency>

kaptcha配置依赖

<dependency>
			<groupId>com.github.axet</groupId>
			<artifactId>kaptcha</artifactId>
		</dependency>

hessian配置依赖

<dependency>
		    <groupId>com.caucho</groupId>
		    <artifactId>hessian</artifactId>
		    <version>4.0.38</version>
		</dependency>

完整的web.xml配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0"
	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

	<!-- el表达式配置 -->
	<jsp-config>
		<jsp-property-group>
			<url-pattern>*.jsp</url-pattern>
			<el-ignored>false</el-ignored>
		</jsp-property-group>
	</jsp-config>

	<!-- 激活Tomcat的defaultServlet来处理静态文件 -->
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.jpg</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.gif</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.png</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.js</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.css</url-pattern>
	</servlet-mapping>