在EntityListener中插入導致Hibernate中出現ConcurrentModificationException

Question

我有一個實體監聽器用於查找所選實體的更改。

@PostUpdate 
@PostPersist 
void onChange(RhEntity data) { 
    InjectHelper.getInstance().inject(this, this.changeService); 
    if (ReflectionUtils.hasChangeListener(data.getClass())) 
     changeService.persistAndNotifyAll(data, DataChange.DATA_CHANGE_TYPE_INSERT_OR_UPDATE); 
} 

當交易完成後，在提交的Hibernate拋出ConcurrentModificationException

org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction 

    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:526) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:757) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:726) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:521) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) 
    at com.sun.proxy.$Proxy106.add(Unknown Source) 
    at com.rh.cores.architecture.tests.services.PersonDataUtils.getNaturalPerson(PersonDataUtils.java:65) 
    at com.rh.cores.architecture.tests.services.PersonDataUtils.initPersonData(PersonDataUtils.java:92) 
    at com.rh.cores.architecture.tests.services.PersonDataUtils$$FastClassBySpringCGLIB$$6b46a725.invoke(<generated>) 
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) 
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) 
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653) 
    at com.rh.cores.architecture.tests.services.PersonDataUtils$$EnhancerBySpringCGLIB$$13329715.initPersonData(<generated>) 
    at com.rh.cores.architecture.tests.units.DataChangeListenerTest.beforeMethod(DataChangeListenerTest.java:53) 
    at com.rh.cores.architecture.tests.RhAuthenticatedTest.setup(RhAuthenticatedTest.java:45) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:73) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82) 
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:73) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:224) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163) 
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137) 
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69) 
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234) 
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74) 
Caused by: javax.persistence.RollbackException: Error while committing the transaction 
    at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:86) 
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517) 
    ... 50 more 
Caused by: java.util.ConcurrentModificationException 
    at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) 
    at java.util.ArrayList$Itr.next(ArrayList.java:851) 
    at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042) 
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:558) 
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:434) 
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:337) 
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) 
    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1295) 
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:468) 
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3135) 
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2352) 
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:485) 
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:147) 
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$100(JdbcResourceLocalTransactionCoordinatorImpl.java:38) 
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:231) 
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:65) 
    at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:61) 
    ... 51 more 

我的配置使用Spring冬眠，

**此代碼的工作，當我使用@Transactional(Transactional.TxType.REQUIRES_NEW)

Answer 1

的JPA 2.1規範說（3.5.2）：

個

以下規則適用於生命週期回調方法：

...

• 生命週期 回調可以調用JNDI，JDBC，JMS和企業Bean。實體 監聽器和回調方法的Java Persistence 2.1，
• 在 一般來說，便攜式應用程序不應 調用EntityManager的或查詢操作，訪問其他實體 情況下，或修改同一個持久 上下文中的關係[46的生命週期方法]。生命週期回調方法可以修改其被調用的實體的非關係狀態。

你無法去改變這個回調函數的管理對象的持久狀態。

此外，休眠有一個問題：HHH-7537。此問題已關閉，因爲生命週期回調 - 與您的一樣 - 不符合規範。你可以通過打開一個新的交易來做這種事情（例如使用Spring，在生命週期方法中使用REQUIRE_NEW）