package com.ucap.sms; import java.util.Timer; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; public class SmsListener implements ServletContextListener{     private Timer timer=null;     public void contextDestroyed(ServletContextEvent sce) {         timer.cancel();     }     public void contextInitialized(ServletContextEvent sce) {         timer=new Timer(true); 　　　　　//设置任务计划，启动和间隔时间         timer.schedule(new NoteReplyTask(), 0, 86400000);     } }

import java.util.TimerTask; public class MyTask extends TimerTask {   public void run() {     // System.out.println("call at " + (new Date()));     // TODO 此处添加具体任务代码   } }

<listener> <listener-class>com.fastunit.samples.listener.MyListener</listener-class> </listener>