这是一个奇怪的情况。我的Spring应用程序在容器中运行（使用jre 8，而不是jdk）。计划的任务停止运行一次，我正在运行spring admin，它们看起来不错，并且计划的线程显示WAITING ...
"EMS-Thread-Executor-20" #728 prio=5 os_prio=0 tid=0x00007ff4882e6800 nid=0x2e4 waiting on condition [0x00007ff5486b3000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000005cda9ff08> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
所以我检查了我的应用程序日志，所以这是我日志中的异常，这恰好是我上次执行预定任务的时间。
[ERROR] 2019-02-25 12:44:25.624 [EMS-Thread-Executor-13] SalesOrderRunnable - Catching
org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:279) ~[spring-orm-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:253) ~[spring-orm-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527) ~[spring-orm-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at com.sun.proxy.$Proxy165.findAllUnShippedByUserAndChannelAndStatusInAndLastSyncTimeAndStatusNotVoidedAndRequireUpload(Unknown Source) ~[?:?]
at com.ems.dao.service.impl.SalesShipmentServiceImpl.findAllUnShippedByUserAndChannelAndStatusInAndLastSyncTimeAndStatusNotVoidedAndRequireUpload(SalesShipmentServiceImpl.java:67) ~[ems-dao-1.0.jar!/:?]
at com.ems.daemon.tasks.ScheduledOrderRetrievalTask.fetchChannelOrders(ScheduledOrderRetrievalTask.java:286) ~[classes!/:?]
at com.ems.daemon.tasks.ScheduledOrderRetrievalTask.done(ScheduledOrderRetrievalTask.java:207) ~[classes!/:?]
at com.ems.daemon.tasks.SalesOrderRunnable.run(SalesOrderRunnable.java:128) [classes!/:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_192]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_192]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_192]
Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:69) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.getResultSet(Loader.java:2167) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1930) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1892) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:937) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2689) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2672) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2506) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.list(Loader.java:2501) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:2223) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.internal.AbstractSharedSessionContract.list(AbstractSharedSessionContract.java:1053) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.internal.NativeQueryImpl.doList(NativeQueryImpl.java:170) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.Query.getResultList(Query.java:135) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_192]
at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:402) ~[spring-orm-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at com.sun.proxy.$Proxy164.getResultList(Unknown Source) ~[?:?]
at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:129) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:91) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
... 16 more
Caused by: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:536) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:513) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at com.mysql.cj.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:1983) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at com.mysql.cj.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1826) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at com.mysql.cj.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1923) ~[mysql-connector-java-6.0.6.jar!/:6.0.6]
at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_192]
at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114) ~[tomcat-jdbc-9.0.13.jar!/:?]
at com.sun.proxy.$Proxy252.executeQuery(Unknown Source) ~[?:?]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:60) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.getResultSet(Loader.java:2167) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1930) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1892) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:937) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2689) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2672) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2506) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.Loader.list(Loader.java:2501) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:2223) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.internal.AbstractSharedSessionContract.list(AbstractSharedSessionContract.java:1053) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.internal.NativeQueryImpl.doList(NativeQueryImpl.java:170) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.Query.getResultList(Query.java:135) ~[hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_192]
at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:402) ~[spring-orm-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at com.sun.proxy.$Proxy164.getResultList(Unknown Source) ~[?:?]
at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:129) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:91) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125) ~[spring-data-jpa-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
... 16 more
[TRACE] 2019-02-25 12:44:25.634 [EMS-Thread-Executor-13] SalesOrderRunnable - Exit
首先，我将需要弄清楚为什么会出现该sql错误，正如我所说的那样，它通常可以正常工作，只是偶尔出现此问题。遇到此异常时，有没有办法转储sql语句？如果没有，我该如何在代码中转储确切的sql语句？
然后，我不明白为什么此异常会导致计划的任务停止运行。我有一个try / catch块捕获了异常，但是我希望预定的任务在预定的时间后醒来并再次运行...但是从未成功。
谢谢