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);
　　　　　//設置任務計劃，啟動和間隔時間
        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 此處添加具體任務代碼
  }

}

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