我将定时任务中改动了一个类的路径，结果服务器起来的时候出现这样的错误

org.springframework.context.ApplicationContextException: Failed to start bean 'scheduler'; nested exception is org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler; nested exception is org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't store trigger 'fontal.tbcgqsj' for 'fontal.tbcgqsj' job:com.dzmsoft.fontal.worker.dto.ScheduleJob [See nested exception: java.lang.ClassNotFoundException: com.dzmsoft.fontal.worker.dto.ScheduleJob]]
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176)
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:852)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
	at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:782)
	at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:424)
	at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:774)
	at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
	at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1242)
	at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
	at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
	at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:229)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:172)
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
	at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
	at org.eclipse.jetty.server.Server.doStart(Server.java:282)
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
	at com.dzmsoft.fontal.web.test.QuickStartServer.main(QuickStartServer.java:29)
Caused by: org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler; nested exception is org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't store trigger 'fontal.tbcgqsj' for 'fontal.tbcgqsj' job:com.dzmsoft.fontal.worker.dto.ScheduleJob [See nested exception: java.lang.ClassNotFoundException: com.dzmsoft.fontal.worker.dto.ScheduleJob]]
	at org.springframework.scheduling.quartz.SchedulerFactoryBean.start(SchedulerFactoryBean.java:718)
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173)
	... 24 more
Caused by: org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't store trigger 'fontal.tbcgqsj' for 'fontal.tbcgqsj' job:com.dzmsoft.fontal.worker.dto.ScheduleJob [See nested exception: java.lang.ClassNotFoundException: com.dzmsoft.fontal.worker.dto.ScheduleJob]]
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.schedulerStarted(JobStoreSupport.java:692)
	at org.quartz.core.QuartzScheduler.start(QuartzScheduler.java:567)
	at org.quartz.impl.StdScheduler.start(StdScheduler.java:142)
	at org.springframework.scheduling.quartz.SchedulerFactoryBean.startScheduler(SchedulerFactoryBean.java:648)
	at org.springframework.scheduling.quartz.SchedulerFactoryBean.start(SchedulerFactoryBean.java:715)
	... 25 more
Caused by: org.quartz.JobPersistenceException: Couldn't store trigger 'fontal.tbcgqsj' for 'fontal.tbcgqsj' job:com.dzmsoft.fontal.worker.dto.ScheduleJob [See nested exception: java.lang.ClassNotFoundException: com.dzmsoft.fontal.worker.dto.ScheduleJob]
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeTrigger(JobStoreSupport.java:1223)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.doUpdateOfMisfiredTrigger(JobStoreSupport.java:1037)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverMisfiredJobs(JobStoreSupport.java:986)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverJobs(JobStoreSupport.java:866)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport$1.executeVoid(JobStoreSupport.java:838)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3703)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3701)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3787)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverJobs(JobStoreSupport.java:834)
	at org.quartz.impl.jdbcjobstore.JobStoreSupport.schedulerStarted(JobStoreSupport.java:690)
	... 29 more
Caused by: java.lang.ClassNotFoundException: com.dzmsoft.fontal.worker.dto.ScheduleJob

从上面的日志可以看出com.dzmsoft.fontal.worker.dto.ScheduleJob这个是我以前的类路径，现在调整了位置，结果quartz就不认识，工程里面肯定不会有问题，那么推测只能出现在数据库层面。
查看qrtz_job_details

从BLOB中提取内容如下图所示，也就是说他吧一些东西记录在数据库中持久化了。

我至少删掉这些数据，再重新搞了。

delete from qrtz_cron_triggers;
delete from qrtz_triggers;
delete from qrtz_job_details;