Jsp&Servelet 学习笔记-创建一个部署描述文件

 

1.5创建一个部署描述文件

 

·为你的servlets注册并且创建一个url mapping

·注册并指定应用中的监听器和过滤器

·指定上下文中的初始化参数。

·配置错误页，和欢迎页

·配置seeion 超时

 

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"  "http://java.sun.com/dtd/web-application_2_3.dtd"> 
<web-app>  
     <display-name>Servlet 2.3 deployment descriptor</display-name> 
     <filter> 
         <filter-name>RequestFilter</filter-name> 
         <filter-class>com.mydev.RequestFilter</filter-class> 
     </filter> 
     <filter-mapping>  
        <filter-name>RequestFilter</filter-name>  
        <url-pattern>/*</url-pattern> 
     </filter-mapping>  
     <listener>   
        <listener-class>com.mydev.ReqListener</listener-class>
     </listener> 
     <servlet> 
        <servlet-name>MyServlet</servlet-name>  
        <servlet-class>com.mydev.MyServlet</servlet-class> 
      </servlet>  
      <servlet-mapping>  
         <servlet-name> MyServlet </servlet-name>   
         <url-pattern>/myservlet</url-pattern>  
      </servlet-mapping> 
      <session-config>  
         <session-timeout>15</session-timeout>
         </session-config>  <error-page>  
      <error-code>404</error-code>  
          <location>/err404.jsp</location>
      </error-page>
</web-app>