监听器实例

1、web.xml里面

 

<listener>
  <listener-class>
     com.dmx.MyListener
  </listener-class>
 </listener>

 

2、类MyListener

 

package com.dmx;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

public class MyListener implements ServletContextListener {

 private static MyTask mytask;
 
 public void contextDestroyed(ServletContextEvent arg0) {
  mytask.cancel();
  System.out.println("定时计划任务关闭");

 }

 public void contextInitialized(ServletContextEvent arg0) {
  
   System.out.println("定时计划任务启动");   
    mytask.start(0,24);
 }

}

 

3、类MyTask

 

package com.dmx;

import java.util.Timer;
import java.util.TimerTask;

import com.core.http.Constants;
import com.core.util.MethodFactory;
import com.dfo.trade.sessionuser;

public class MyTask extends TimerTask {
 
    String index;
    Timer myTimer = new Timer();
   
 public MyTask(String index) {
        this.index = index;  
 }
 

 
 @Override
 public void run() {  
  coa_overReadCoachCardTime_io io = new coa_overReadCoachCardTime_io();
  coa_overReadCoachCardTime_q.MainProcess(io);                                                                               //此处添加需要执行的部分
 }

 /**
  * @param args
  */
 public static void main(String[] args) {
     MyTask myTask1 = new MyTask("First task");
     myTask1.start(0,3);
  }
 
    public void start(int delay, int internal) {
         myTimer.schedule(this, delay * 1, 1000 * 60 * 10);
    }
    
 public void end(){
    myTimer.cancel();
 }
}