Struts2中实现web应用的初始化实例详解

package listener;   
   
import javax.servlet.ServletContextEvent;   
import javax.servlet.ServletContextListener;   
   
public class InitListener implements ServletContextListener {   
   
  public void contextDestroyed(ServletContextEvent sce) {   
    System.out.println("web exit ... ");   
  }   
   
  public void contextInitialized(ServletContextEvent sce) {   
    System.out.println("web init ... ");   
    //系统的初始化工作   
    //TODO 
  }   
}   

<?xml version="1.0" encoding="UTF-8"?>   
<web-app>   
 <listener>   
  <listener-class>fangwei.listener.InitListener</listener-class>   
 </listener>   
 <filter>   
  <filter-name>struts2</filter-name>   
  <filter-class>.apache.struts2.dispatcher.FilterDispatcher</filter-class>   
 </filter>   
 <filter-mapping>   
  <filter-name>struts2</filter-name>   
  <url-pattern>/</url-pattern>   
 </filter-mapping>   
</web-app>