javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not prepare statement
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1608) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.internal.EntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(EntityManagerImpl.java:235) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2967) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2339) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:485) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.resource.transaction.backend.jta.internal.JtaTransactionCoordinatorImpl.beforeCompletion(JtaTransactionCoordinatorImpl.java:316) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.resource.transaction.backend.jta.internal.synchronization.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:47) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.resource.transaction.backend.jta.internal.synchronization.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:37) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76) ~[jta-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:368) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:91) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:162) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1289) ~[jta-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:126) ~[jta-5.5.31.Final.jar:5.5.31.Final]
    at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1023) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:518) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673) [spring-aop-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at com.huangliusong.service.impl.OrderServiceImpl$$EnhancerBySpringCGLIB$$62b37759.cancel(<generated>) [classes/:na]
    at com.huangliusong.test.OrderserviceImplTest.cancel(OrderserviceImplTest.java:58) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92]
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit.jar:4.12]
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit.jar:4.12]
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit.jar:4.12]
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit.jar:4.12]
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit.jar:4.12]
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit.jar:4.12]
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit.jar:4.12]
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit.jar:4.12]
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit.jar:4.12]
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207) [.cp/:na]
Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:182) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:78) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.buildBatchStatement(AbstractBatchImpl.java:136) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.getBatchStatement(AbstractBatchImpl.java:125) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3077) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:3013) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3393) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:145) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:582) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:456) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:337) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1282) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:465) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2963) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    ... 50 common frames omitted
Caused by: java.sql.SQLException: ConnectionImple.registerDatabase - ARJUNA017017: enlist of resource failed
    at com.arjuna.ats.internal.jdbc.ConnectionImple.registerDatabase(ConnectionImple.java:1008) ~[jdbc-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.internal.jdbc.ConnectionImple.prepareStatement(ConnectionImple.java:192) ~[jdbc-5.5.31.Final.jar:5.5.31.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:87) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    ... 64 common frames omitted

2018-05-12 16:30:50.540  WARN 12164 --- [           main] com.arjuna.ats.jta                       : ARJUNA016045: attempted rollback of < formatId=131077, gtrid_length=29, bqual_length=36, tx_uid=0:ffffac140a06:de3e:5af6a634:e, node_name=1, branch_uid=0:ffffac140a06:de3e:5af6a634:10, subordinatenodename=null, eis_name=0 > (com.mysql.jdbc.jdbc2.optional.JDBC4MysqlXAConnection@6dae70f9) failed with exception code XAException.XAER_RMFAIL

com.mysql.jdbc.jdbc2.optional.MysqlXAException: Undetermined error occurred in the underlying Connection - check your data for consistency
    at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.mapXAExceptionFromSQLException(MysqlXAConnection.java:586) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.dispatchCommand(MysqlXAConnection.java:568) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.rollback(MysqlXAConnection.java:413) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecord.topLevelAbort(XAResourceRecord.java:362) ~[jta-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3023) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3002) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1674) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1615) ~[arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:99) [arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:162) [arjuna-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1289) [jta-5.5.31.Final.jar:5.5.31.Final]
    at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:126) [jta-5.5.31.Final.jar:5.5.31.Final]
    at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1023) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:518) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) [spring-tx-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673) [spring-aop-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at com.huangliusong.service.impl.OrderServiceImpl$$EnhancerBySpringCGLIB$$62b37759.cancel(<generated>) [classes/:na]
    at com.huangliusong.test.OrderserviceImplTest.cancel(OrderserviceImplTest.java:58) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92]
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit.jar:4.12]
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit.jar:4.12]
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit.jar:4.12]
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit.jar:4.12]
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit.jar:4.12]
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit.jar:4.12]
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit.jar:4.12]
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit.jar:4.12]
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit.jar:4.12]
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461) [.cp/:na]
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207) [.cp/:na]
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_92]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_92]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_92]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_92]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.Util.getInstance(Util.java:408) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:898) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:887) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:861) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1184) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1179) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.ConnectionImpl.createStatement(ConnectionImpl.java:2371) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.ConnectionImpl.createStatement(ConnectionImpl.java:2355) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.dispatchCommand(MysqlXAConnection.java:560) ~[mysql-connector-java-5.1.45.jar:5.1.45]
    ... 49 common frames omitted

2018-05-12 16:30:50.545  WARN 12164 --- [           main] com.arjuna.ats.arjuna                    : ARJUNA012091: Top-level abort of action 0:ffffac140a06:de3e:5af6a634:e received TwoPhaseOutcome.FINISH_ERROR from com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecord
2018-05-12 16:30:50.563  INFO 12164 --- [       Thread-2] o.s.w.c.s.GenericWebApplicationContext   : Closing org.springframework.web.context.support.GenericWebApplicationContext@428640fa: startup date [Sat May 12 16:30:41 CST 2018]; root of context hierarchy
2018-05-12 16:30:50.582  INFO 12164 --- [       Thread-2] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2018-05-12 16:30:50.586  INFO 12164 --- [       Thread-2] com.arjuna.ats.jbossatx                  : ARJUNA032014: Stopping transaction recovery manager

解决：

你可以用下列语句查询全局和会话事务隔离级别：

SELECT @@global.tx_isolation;

SELECT @@session.tx_isolation;

SELECT @@tx_isolation;

网上有人使用set tx_isolation命令：

mysql> set tx_isolation='read-committed';
Query OK, 0 rows affected (0.00 sec)

+----------------+
| @@tx_isolation |
+----------------+
| READ-COMMITTED |
+----------------+
1 row in set (0.00 sec)

mysql> select @@session.tx_isolation;
+------------------------+
| @@session.tx_isolation |
+------------------------+
| READ-COMMITTED         |
+------------------------+
1 row in set (0.00 sec)

事务隔离变了。