Quartz TriggerListener 触发器监听器

Quartz  Scheduler 可以对Trigger建立一个监听器，分别对Trigger的各种状态进行监听

实现监听器需要实现TriggerListener接口，然后注册到Scheduler上就可以了。

一：写一个类实现触发器监听接口

package com.gary.operation.jobdemo.example1;

import org.quartz.JobExecutionContext;
import org.quartz.Trigger;
import org.quartz.Trigger.CompletedExecutionInstruction;
import org.quartz.TriggerListener;

public class MyTriggerListener implements TriggerListener {

    @Override
    public String getName() {
        return "MyOtherTriggerListener";
    }

    /**
     * (1)
     * Trigger被激发 它关联的job即将被运行
     * Called by the Scheduler when a Trigger has fired, and it's associated JobDetail is about to be executed.
     */
    @Override
    public void triggerFired(Trigger trigger, JobExecutionContext context) {
        System.out.println("MyOtherTriggerListener.triggerFired()");
    }

    /**
     * (2)
     * Trigger被激发 它关联的job即将被运行,先执行(1)，在执行(2) 如果返回TRUE 那么任务job会被终止
     * Called by the Scheduler when a Trigger has fired, and it's associated JobDetail is about to be executed
     */
    @Override
    public boolean vetoJobExecution(Trigger trigger, JobExecutionContext context) {
        System.out.println("MyOtherTriggerListener.vetoJobExecution()");
        return false;
    }

    /**
     * (3) 当Trigger错过被激发时执行,比如当前时间有很多触发器都需要执行，但是线程池中的有效线程都在工作，
     *  那么有的触发器就有可能超时，错过这一轮的触发。
     * Called by the Scheduler when a Trigger has misfired.
     */
    @Override
    public void triggerMisfired(Trigger trigger) {
        System.out.println("MyOtherTriggerListener.triggerMisfired()");
    }

    /**
     * (4) 任务完成时触发
     * Called by the Scheduler when a Trigger has fired, it's associated JobDetail has been executed
     * and it's triggered(xx) method has been called.
     */
    @Override
    public void triggerComplete(Trigger trigger, JobExecutionContext context,
            CompletedExecutionInstruction triggerInstructionCode) {
        System.out.println("MyOtherTriggerListener.triggerComplete()");
    }

}

二进行注册: 细节与注册任务监听器一样(http://www.cnblogs.com/daxin/archive/2013/05/29/3105830.html)

Registering A TriggerListener With The Scheduler To Listen To All Triggers

scheduler.getListenerManager().addTriggerListener(myTriggerListener, allTriggers());

Registering A TriggerListener With The Scheduler To Listen To A Specific Trigger

scheduler.getListenerManager().addTriggerListener(myTriggerListener, triggerKeyEquals(triggerKey("myTriggerName", "myTriggerGroup")));

Registering A TriggerListener With The Scheduler To Listen To All Triggers In a Group

scheduler.getListenerManager().addTriggerListener(myTriggerListener, triggerGroupEquals("myTriggerGroup"));