向 Quartz CronTrigger 添加一次性额外触发
我想知道如何采用 CronTrigger 并添加额外的一次性触发，以便我可以像使用 getFileTimeAfter(Date) 方法一样迭代触发时间
假设我有一个 CronTrigger 表示为：“0 0 12 * *？”
我如何添加一个额外的触发，如 SimpleTrigger 所表达的，不重复？
I was wondering how I might take a CronTrigger and add an extra one-off firing such that I can iterate over the firing times as I might with the getFileTimeAfter(Date) method
Say if I had a CronTrigger expressed by: "0 0 12 * * ?"
How might I add one additional firing as might be expressed by a SimpleTrigger with no repeat?
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CronTrigger本身不可能做到这一点。 不过，您可以根据需要将任意多个不同的触发器与给定的JobDetail关联起来。您可以通过注册
CronTrigger和SimpleTrigger来模拟您想要实现的目标，在每个触发器上调用getFireTimeAfter并获取较早的值。令人烦恼的是，
getFireTimeAfter出现在CronTrigger和SimpleTrigger上，但不在Trigger接口中。 请注意，这是 Quartz API 中最小的错误。This isn't possible with
CronTriggeritself. You can, however, associate as many different Triggers with a givenJobDetailas you like.You could simulate what you're trying to achieve by registering your
CronTriggerplus aSimpleTrigger, callgetFireTimeAfteron each trigger, and take the earlier value.Annoyingly,
getFireTimeAfteris present on bothCronTriggerandSimpleTrigger, but isn't in theTriggerinterface. That's the least of Quartz's API sins, mind you.