JAVA Web定时执行任务

JAVA Web定时执行任务

<listener>
<listener-class>com.aa.timer.TaskManager</listener-class>
</listener>

import java.util.Calendar;
import java.util.Timer;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.apache.commons.lang.time.DateUtils;

public class TaskManager implements ServletContextListener{
public  long t=DateUtils.MILLIS_PER_SECOND;
/**
* 定时器
*/
private Timer timer;
@Override
public void contextDestroyed(ServletContextEvent sce) {
// TODO Auto-generated method stub
sce.getServletContext().log("[INFO]:timer shut down.");
}
@Override
public void contextInitialized(ServletContextEvent sce) {
// TODO Auto-generated method stub
//定义定时器
sce.getServletContext().log("[INFO]:timer start.");
timer = new Timer("消息发送",true);
//启动备份任务,每月(4个星期)执行一次
//schedule(A,B,C) A:定时执行的函数，B：首次执行的时间（日期或延时） C：执行的时间间隔
//timer.schedule(new MessagePusher(),t,30000);
timer.schedule(new MessagePusher(),t*10);
}
}

import java.util.Date;
import java.util.TimerTask;
import org.apache.log4j.Logger;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.zauther.weixin.service.ReminderService;

public class MessagePusher extends TimerTask{
private static Logger logger = Logger.getLogger(MessagePusher.class);
@Override
public void run() {
// TODO Auto-generated method stub
System.out.println(new Date().toLocaleString());
ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
MessageSender messageSender=(MessageSender) ac.getBean("messageSender");
messageSender.sendMessage();
}
}