quartz 一个JobDetail 如何设置多个触发器
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2024-01-22 09:36:58
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http://www.iteye.com/problems/47143
红色处报异常了。。。
A1
A2
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:
JobDetail有个属性叫durable,表明该任务没有任何trigger绑定时仍保存在Quartz的JobStore中,默认为false。
若JobDetail的durable属性为false,则任务将会从Quartz移除。
JobDetail jobDetail = new JobDetail(jobName, jobGroupName, class1.getClass()); Trigger trigger3 =TriggerUtils.makeMinutelyTrigger("trigger2", 10, SimpleTrigger.REPEAT_INDEFINITELY); Trigger trigger4 =TriggerUtils.makeSecondlyTrigger("trigger1",5000, SimpleTrigger.REPEAT_INDEFINITELY); scheduler.scheduleJob(jobDetail, trigger3); [color=red]scheduler.scheduleJob(jobDetail, trigger4);[/color]
红色处报异常了。。。
Unable to store Job with name: '1000000000' and group: 'jobDetailGroup2', because one already exists with this identification. org.quartz.ObjectAlreadyExistsException: Unable to store Job with name: '1000000000' and group: 'jobDetailGroup2', because one already exists with this identification. at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJob(JobStoreSupport.java:1098) at org.quartz.impl.jdbcjobstore.JobStoreSupport$3.execute(JobStoreSupport.java:1047) at org.quartz.impl.jdbcjobstore.JobStoreSupport$40.execute(JobStoreSupport.java:3675) at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3747) at org.quartz.impl.jdbcjobstore.JobStoreTX.executeInLock(JobStoreTX.java:93) at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInLock(JobStoreSupport.java:3671) at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJobAndTrigger(JobStoreSupport.java:1035) at org.quartz.core.QuartzScheduler.scheduleJob(QuartzScheduler.java:732) at org.quartz.impl.StdScheduler.scheduleJob(StdScheduler.java:265) at com.congxing.bi.modules.alarmwarning.quartz.SimpleScheduler.registDataJobToScheduler(SimpleScheduler.java:126) at Test.main(Test.java:17)
A1
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
A2
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:
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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)
系列
创建一个立即触发的Trigger,并将其与name与group指定的任务绑定
JobDetail有个属性叫durable,表明该任务没有任何trigger绑定时仍保存在Quartz的JobStore中,默认为false。
若JobDetail的durable属性为false,则任务将会从Quartz移除。
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