如何使用Quartz XML插件声明一次性简单触发器？

Question

我正在尝试设置一个作业，以便它在我的调度程序第一次启动时运行一次，然后每天午夜运行一次。下面是我的作业和触发器的XML。一天一次的触发器工作，但一次性触发器不起作用。

<job>
    <name>MyJob</name>
    <group>MyJobGroup</group>
    <job-type>MyScheduledJob, MyJobAssembly</job-type>
    <description>My job, yo</description>
    <durable>true</durable>
    <recover>false</recover>
</job>
<trigger>
    <cron>
        <name>MyTrigger</name>
        <group>MyTriggerGroup</group>
        <job-name>MyJob</job-name>
        <job-group>MyJobGroup</job-group>
        <cron-expression>0 0 0 1/1 * ? *</cron-expression>
    </cron>
    <simple>
        <name>MyOneTimeTrigger</name>
        <group>MyTriggerGroup</group>
        <description>Run once at startup, G</description>
        <misfire-instruction>SmartPolicy</misfire-instruction>
        <volatile>false</volatile>
        <job-name>MyJob</job-name>
        <job-group>MyJobGroup</job-group>
        <repeat-count>0</repeat-count>
        <repeat-interval>0</repeat-interval> 
    </simple>
</trigger>

Answer 1

我猜你的意思是扳机永远不会开火。也许是因为它刻不容缓它失火了？在未来的一段时间内添加<start-time-seconds-in-future/>怎么样？

<simple>
    <name>MyOneTimeTrigger</name>
    <group>MyTriggerGroup</group>
    <description>Run once at startup, G</description>
    <misfire-instruction>SmartPolicy</misfire-instruction>
    <volatile>false</volatile>
    <job-name>MyJob</job-name>
    <job-group>MyJobGroup</job-group>
    <start-time-seconds-in-future>60</start-time-seconds-in-future>
    <repeat-count>0</repeat-count>
    <repeat-interval>0</repeat-interval> 
</simple>

如果它对您有效，您必须知道一些您可能认为是错误或特性的事情:如果您重新启动服务器，因为触发器已经触发并被移除，它将再次触发。见：Quartz XML plugin reschedules fired triggers after restart。