quartz-java.lang.ClassCastException org.quartz.JobDetail无法使用JobStoreTX转换为ScheduledJobDetail

我用的是石英1.6.5。我最近从Quartz Job Store从RamJobStore搬到org.Quartz.impl.jdbcjobstore.JobStoreTX。此后，每当quartz试图运行作业时，我就开始在日志中看到ClassCastException。

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更新：我在org.quartz.impl.jdbcjobstore.JobStoreCMT上尝试了相同的方法，但仍然存在相同的问题。

问题可能是您对

作业详细信息进行了子类化

当您使用
RAMJobStore
时，您的
scheduledjobdeail
对象将保留在内存中，因此您可以毫无问题地从
jobdeail
中回溯。但是，当使用数据库
JobStore
时，Quartz将重建
JobDetail
对象本身，并且它无法知道您希望它为此使用自定义类，因此您会得到异常

即使Quartz知道使用
ScheduledJobDetail
，它也无法处理您添加的其他字段

子类化
JobDetail
不是一条可行之路。您需要找到编码此信息的其他方法，而无需子类化。
什么是
ScheduledJobDetail
？Quartz API中没有这样的类。ScheduledJobDetail是我们编写的一个类，它扩展了org.Quartz.JobDetail，并为方便起见添加了一些字段。
Jul 26, 2010 3:10:00 AM org.quartz.core.ErrorLogger schedulerError
SEVERE: Job (group52.52 threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: java.lang.ClassCastException: org.quartz.JobDetail cannot be cast to ScheduledJobDetail]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525)
Caused by: java.lang.ClassCastException: org.quartz.JobDetail cannot be cast to ScheduledJobDetail
        at ScheduledJob.execute(ScheduledJob.java:150)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
        ... 1 more
org.quartz.scheduler.instanceName = DefaultQuartzScheduler
org.quartz.scheduler.rmi.export = false
org.quartz.scheduler.rmi.proxy = false
org.quartz.scheduler.wrapJobExecutionInUserTransaction = false
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 10
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.dataSource = myDS
org.quartz.dataSource.dsjta.jndiURL=myDs
org.quartz.jobStore.useProperties=true
136672 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' is desired by: DefaultQuartzScheduler_QuartzSchedulerThread
136672 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' is being obtained: DefaultQuartzScheduler_QuartzSchedulerThread
136672 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' given to: DefaultQuartzScheduler_QuartzSchedulerThread
136703 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' retuned by: DefaultQuartzScheduler_QuartzSchedulerThread
136703 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.SimpleJobFactory  - Producing instance of Job 'group152.152', class=ScheduledJob
136703 [DefaultQuartzScheduler_Worker-3] DEBUG org.quartz.core.JobRunShell  - Calling execute on job group152.152
136703 [DefaultQuartzScheduler_Worker-3] ERROR org.quartz.core.JobRunShell  - Job group152.152 threw an unhandled Exception:
java.lang.ClassCastException: org.quartz.JobDetail cannot be cast to ScheduledJobDetail
        at ScheduledJob.execute(SchedulerQuartzImpl.java:150)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
136703 [DefaultQuartzScheduler_Worker-3] ERROR org.quartz.core.ErrorLogger  - Job (group152.152 threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: java.lang.ClassCastException: org.quartz.JobDetail cannot be cast to ScheduledJobDetail]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:227)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: java.lang.ClassCastException: org.quartz.JobDetail cannot be cast to ScheduledJobDetail
        at ScheduledJob.execute(SchedulerQuartzImpl.java:150)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        ... 1 more
136703 [DefaultQuartzScheduler_Worker-3] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' is desired by: DefaultQuartzScheduler_Worker-3
136703 [DefaultQuartzScheduler_Worker-3] DEBUG org.quartz.impl.jdbcjobstore.SimpleSemaphore  - Lock 'TRIGGER_ACCESS' is being obtained: DefaultQuartzScheduler_Worker-3