java 立即使用 Quartz 完成一次性任务
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Immediate one time task with Quartz
提问by rook
I am using a Quartzto build a clustered ThreadPool and I have number of tasks that run at various times. What is the best way to run 1 task immanently and only once on the clustered ThreadPool. I know I can set the task to a high priority. But what is the best way to register a "one shot" task?
我正在使用Quartz来构建集群线程池，并且我有许多在不同时间运行的任务。在集群线程池上永久运行 1 个任务且仅运行一次的最佳方法是什么。我知道我可以将任务设置为高优先级。但是注册“一次性”任务的最佳方法是什么？
采纳答案by Brad Mace
I feel like I must be missing something, or maybe you just overlooked this bit in the docs:
我觉得我一定遗漏了一些东西，或者您可能只是忽略了文档中的这一点：
public SimpleTrigger(String name, String group, Date startTime, Date endTime, int repeatCount, long repeatInterval)
public SimpleTrigger(String name, String group, Date startTime, Date endTime, int repeatCount, long repeatInterval)
SimpleTrigger trigger = new SimpleTrigger("myTrigger",
null,
new Date(),
null,
0,
0L);
回答by Patrick Twohig
You can also use the TriggerBuilderclass to make life a little bit easier. It's similar to what was posted before, just a little cleaner.
您还可以使用TriggerBuilder类让生活更轻松一些。和之前贴的差不多，只是简洁了一点。
Trigger trigger = TriggerBuilder.newTrigger()
.startNow()
.build();
回答by Pavel Vlasov
The easiest way to trigger an one-shot for a pre-registered job:
触发预注册作业一次性的最简单方法：
Scheduler sched = ...
scheduler.triggerJob(jobKey);
