<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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_2_5.xsd">
<servlet>
<!-- 类名 -->
<servlet-name>HelloServlet</servlet-name>
<!-- 所在的包 -->
<servlet-class>com.testcode.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<!-- 访问的网址 -->
<url-pattern>/haha</url-pattern>
</servlet-mapping>
</web-app>
说明：
