EJB3.0 Timer

1. 创建一个Session Bean

2. 注入SessionContext Resource

3. 构造一个Timer

4. 利用@Timeout注解定义定时任务的具体执行

package com.icode.jejb.time;

/**
 * Created with IntelliJ IDEA.
 * User: alexz
 * Date: 14-6-25
 * Time: 下午4:44
 * To change this template use File | Settings | File Templates.
 */
public interface TimerTask {

    void start();
}

package com.icode.jejb.time;

import javax.annotation.Resource;
import javax.ejb.*;
import java.util.Date;

/**
 * Created with IntelliJ IDEA.
 * User: alexz
 * Date: 14-6-25
 * Time: 下午4:44
 * To change this template use File | Settings | File Templates.
 */
@Stateless
@Remote(value = TimerTask.class)
public class SimpleTimerTask implements TimerTask {
    private int count = 0;

    @Resource
    private SessionContext sessionContext;

    public SimpleTimerTask() {
        System.out.println("Instance the SimpleTimerTask Bean!!!!!!!!!!!!!");
    }

    @Timeout
    public void execute(Timer timer) {
        String params = (String) timer.getInfo();
        System.out.println(count + ": " + params);
        count++;
    }

    @Override
    public void start() {
        TimerService timerService = sessionContext.getTimerService();
        timerService.createTimer(new Date(new Date().getTime() + 2000), 3000, "This is my first timer task!!!");
    }
}

@Timeout注解的定时任务方法签名的格式 public void methodName(Timer timer){}