Handling 2 trigger(s) that missed their scheduled fire-time,JobPersistenceException: Couldn't store

测试服应用启动， quartz模块报错
Handling 2 trigger(s) that missed their scheduled fire-time
MisfireHandler: Error handling misfires: Couldn’t store trigger ‘group2.job2’ for ‘group2.job2’ job:Couldn’t retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJob
org.quartz.JobPersistenceException: Couldn’t store trigger ‘group2.job2’ for ‘group2.job2’ job:Couldn’t retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJob
Caused by: org.quartz.JobPersistenceException: Couldn’t retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJob
Caused by: java.lang.ClassNotFoundException: com.example.quartz_demo.job.ScheduledJob

具体如下：

2019-11-15 14:12:22.721  INFO 6 --- [lerFactoryBean]] o.s.s.quartz.SchedulerFactoryBean        : Starting Quartz Scheduler now, after delay of 1 seconds
2019-11-15 14:12:22.756  INFO 6 --- [lerFactoryBean]] o.s.s.quartz.LocalDataSourceJobStore     : ClusterManager: detected 1 failed or restarted instances.
2019-11-15 14:12:22.756  INFO 6 --- [lerFactoryBean]] o.s.s.quartz.LocalDataSourceJobStore     : ClusterManager: Scanning for instance "BizMsTestAlpha1573796467977"'s failed in-progress jobs.
2019-11-15 14:12:22.778  INFO 6 --- [lerFactoryBean]] org.quartz.core.QuartzScheduler          : Scheduler schedulerFactoryBean_$_BizMsTestAlpha1573798335259 started.
2019-11-15 14:12:22.810  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.
2019-11-15 14:12:22.865 ERROR 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : MisfireHandler: Error handling misfires: Couldn't store trigger 'group2.job2' for 'group2.job2' job:Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJoborg.quartz.JobPersistenceException: Couldn't store trigger 'group2.job2' for 'group2.job2' job:Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJobat org.quartz.impl.jdbcjobstore.JobStoreSupport.storeTrigger(JobStoreSupport.java:1223) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.doUpdateOfMisfiredTrigger(JobStoreSupport.java:1037) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverMisfiredJobs(JobStoreSupport.java:986) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3203) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:3951) [quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:3972) [quartz-2.2.3.jar!/:na]
Caused by: org.quartz.JobPersistenceException: Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJobat org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1388) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeTrigger(JobStoreSupport.java:1205) ~[quartz-2.2.3.jar!/:na]... 5 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.example.quartz_demo.job.ScheduledJobat java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_222]at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_222]at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:94) ~[core-0.0.1.jar:0.0.1]at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_222]at org.springframework.util.ClassUtils.forName(ClassUtils.java:274) ~[spring-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.springframework.scheduling.quartz.ResourceLoaderClassLoadHelper.loadClass(ResourceLoaderClassLoadHelper.java:81) ~[spring-context-support-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.springframework.scheduling.quartz.ResourceLoaderClassLoadHelper.loadClass(ResourceLoaderClassLoadHelper.java:86) ~[spring-context-support-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectJobDetail(StdJDBCDelegate.java:852) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1385) ~[quartz-2.2.3.jar!/:na]... 6 common frames omitted2019-11-15 14:13:12.804  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.
2019-11-15 14:14:02.852  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.
2019-11-15 14:14:52.802  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.
2019-11-15 14:15:42.864  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.
2019-11-15 14:15:42.908 ERROR 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : MisfireHandler: Error handling misfires: Couldn't store trigger 'group2.job2' for 'group2.job2' job:Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJoborg.quartz.JobPersistenceException: Couldn't store trigger 'group2.job2' for 'group2.job2' job:Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJobat org.quartz.impl.jdbcjobstore.JobStoreSupport.storeTrigger(JobStoreSupport.java:1223) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.doUpdateOfMisfiredTrigger(JobStoreSupport.java:1037) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverMisfiredJobs(JobStoreSupport.java:986) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3203) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:3951) [quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:3972) [quartz-2.2.3.jar!/:na]
Caused by: org.quartz.JobPersistenceException: Couldn't retrieve job because a required class was not found: com.example.quartz_demo.job.ScheduledJobat org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1388) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeTrigger(JobStoreSupport.java:1205) ~[quartz-2.2.3.jar!/:na]... 5 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.example.quartz_demo.job.ScheduledJobat java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_222]at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_222]at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:94) ~[core-0.0.1.jar:0.0.1]at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_222]at org.springframework.util.ClassUtils.forName(ClassUtils.java:274) ~[spring-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.springframework.scheduling.quartz.ResourceLoaderClassLoadHelper.loadClass(ResourceLoaderClassLoadHelper.java:81) ~[spring-context-support-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.springframework.scheduling.quartz.ResourceLoaderClassLoadHelper.loadClass(ResourceLoaderClassLoadHelper.java:86) ~[spring-context-support-5.0.8.RELEASE.jar!/:5.0.8.RELEASE]at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectJobDetail(StdJDBCDelegate.java:852) ~[quartz-2.2.3.jar!/:na]at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1385) ~[quartz-2.2.3.jar!/:na]... 6 common frames omitted2019-11-15 14:16:32.808  INFO 6 --- [_MisfireHandler] o.s.s.quartz.LocalDataSourceJobStore     : Handling 2 trigger(s) that missed their scheduled fire-time.

分析：
上述报错说触发不了group2.job2 找不到任务 group2.job2 的执行类 com.example.quartz_demo.job.ScheduledJob，但是在测试服应用中根本就没有这个类，不存在包 com.example.quartz_demo，而且这个命名很像我写测试demo的工程命名风格。
而且，测试demo 和现在启动的测试服应用 quartz模块访问的数据库是同一个
所以呢，我怀疑是测试服应用启动时quartz模块从数据库加载任务时读取到了测试quartz的demo工程中创建的任务,去数据库中找到quartz表 QRTZ_TRIGGERS，可以看到有 group2.job2 ，在QRTZ_JOB_DETAILS表JOB_CLASS_NAME字段记录了任务执行类 com.example.quartz_demo.job.ScheduledJob

解决:
依次删除 QRTZ_CRON_TRIGGERS 、 QRTZ_JOB_DETAILS 、QRTZ_TRIGGERS 表中 group2.job2 记录信息(注：如果不是按顺序删除,会报错外键问题，根据提示找到外键关联表，删除其中记录即可)

重启项目，上述错误不再出现

注：如果还继续报错，但不是刚才删除的那个任务，而是新的任务,例如 group3.job3 , 那么继续按上面一样删除掉数据库表中group3.job3记录信息，重启项目即可.

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