Code 1:
JobDetail jobDetail = new JobDetail(jobName, jobGroup, class1.getClass());
// durable, 指明任务就算没有绑定Trigger仍保留在Quartz的JobStore中,
jobDetail.setDurable(true);
// 加入一个任务到Quartz框架中, 等待后面再绑定Trigger,
// 此接口中的JobDetail的durable必须为true
scheduler.addJob(jobDetail, false);
Trigger trigger3 = TriggerUtils.makeMinutelyTrigger("trigger2", 10, SimpleTrigger.REPEAT_INDEFINITELY);
// 使用scheduleJob(Trigger)加入的Trigger必须指明JobName与JobGroup
trigger3.setJobName(jobName);
trigger3.setJobGroup(jobGroup);
scheduler.scheduleJob(trigger3); // 看这里
Trigger trigger4 = TriggerUtils.makeSecondlyTrigger("trigger1", 5000, SimpleTrigger.REPEAT_INDEFINITELY);
trigger4.setJobName(jobName);
trigger4.setJobGroup(jobGroup);
scheduler.scheduleJob(trigger4); // 看这里
Code 2:
JobDetail jobDetail = new JobDetail(jobName, jobGroup, class1.getClass());
Trigger trigger3 = TriggerUtils.makeMinutelyTrigger("trigger2", 10, SimpleTrigger.REPEAT_INDEFINITELY);
Trigger trigger4 = TriggerUtils.makeSecondlyTrigger("trigger1", 5000, SimpleTrigger.REPEAT_INDEFINITELY);
// 下面这个接口其实可以理解为先addJob(JobDetail, false)
// 再调用scheduleJob(Trigger), 此时Quartz会自动校正与设置trigger3的JobName与JobGroup属性
scheduler.scheduleJob(jobDetail, trigger3);
// 因为任务已在上一条语句中已加入, 所以不能再使用scheduleJob(JobDetail, Trigger)
trigger4.setJobName(jobName);
trigger4.setJobGroup(jobGroup);
scheduler.scheduleJob(trigger4); // 看这里
总结： 每个任务JobDetail可以绑定多个Trigger，但一个Trigger只能绑定一个任务，这种绑定关系由四种接口来执行
Scheduler#scheduleJob(JobDetail, Trigger)
该接口的作用是在将任务加入Quartz的同时绑定一个Trigger，Quartz会在加入该任务后自动设置Trigger的JobName与JobGroup为该JobDetail的name与group；
Scheduler#scheduleJob(Trigger)
该接口的作用是将该Trigger绑定到其JobName与JobGroup指向的任务JobDetail。这时的name与group需要在Trigger绑定前由Quartz的使用者来设置与调用
Scheduler#rescheduleJob(String, String, Trigger)
替换一个指定的Trigger, 即解除指定Trigger与任务的绑定，并将新的Trigger与任务绑定，Quartz会自动调整新Trigger的JobName与JobGroup，而旧的Trigger将被移除
Scheduler#triggerJob(String, String)
创建一个立即触发的Trigger，并将其与name与group指定的任务绑定
