如何为Quartz cron作业添加条件？

Question

我有cron工作，我想为这份工作添加一些条件。

我的意思是在运行石英之前检查这个条件，如果它是真的然后执行作业，如果它没有跳过这个工作。有没有办法做到这一点？

这是我的调度程序;

<bean id="SystemServicePingExecutorJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    <property name="targetObject" ref="systemService" />
    <property name="targetMethod" value="executeSystemNodePing" />
</bean>
<bean id="SystemServiceLeaderExecutorJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    <property name="targetObject" ref="systemService" />
    <property name="targetMethod" value="executeLeaderResolution" />
</bean>


<bean id="systemServicePingCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
    <property name="jobDetail" ref="SystemServicePingExecutorJob" />
    <property name="cronExpression" value="0 0/15 * * * ?" />
</bean>
<bean id="systemServiceLeaderCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
    <property name="jobDetail" ref="SystemServiceLeaderExecutorJob" />
    <property name="cronExpression" value="0 0/30 * * * ?" />
</bean>

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="overwriteExistingJobs" value="true"/>
    <property name="autoStartup" value="true" />
    <property name="quartzProperties">
        <props>
            <prop key="org.quartz.scheduler.instanceName">MyScheduler</prop>
            <prop key="org.quartz.scheduler.instanceId">AUTO</prop>
            <prop key="org.quartz.scheduler.skipUpdateCheck">true</prop>
            <prop key="org.quartz.jobStore.misfireThreshold">60000</prop>
            <prop key="org.quartz.jobStore.class">org.quartz.simpl.RAMJobStore</prop>
            <prop key="org.quartz.threadPool.class">org.quartz.simpl.SimpleThreadPool</prop>
            <prop key="org.quartz.threadPool.threadCount">5</prop>                
        </props>
    </property>
    <property name="jobDetails">
        <list>
            <ref bean="SystemServicePingExecutorJob" />
            <ref bean="SystemServiceLeaderExecutorJob" />
        </list>
    </property>
    <property name="triggers">
        <list>
            <ref bean="systemServicePingCronTrigger" />                
            <ref bean="systemServiceLeaderCronTrigger" />                
        </list>
    </property>
</bean>