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我有一個奇怪的行爲差異，我想了解。我在實體類中有Bean驗證註釋。我也有一些捕獲它們的代碼，並將它們格式化爲JSON作爲REST接口 - 但我認爲這不會影響任何內容。我使用Spring和JPA Hibernate。Postgres訴HSQL ConstrainViolationException在春季包裝
當我設置HSQL作爲我的數據庫驅動程序，我可以一個EntityManager #persist調用後直接趕ConstrainViolationException。但是，當我將JDBC驅動程序切換到Postgres時，#persist會拋出一個由RollbackException引發的TransactionSystemException，最後在RollbackException中我可以得到ConstraintViolationException。代碼是相同的，我只能切換驅動程序。 #persist方法是@Transactional。
現在我想我可以通過爲TransactionSystemExeption添加一個catch並獲取兩次原因來處理ConstraintViolationException來解決這個問題，但對我來說似乎很奇怪，我需要兩個相同的代碼的catch子句，具體取決於驅動配置。任何想法或解釋？
設置很簡單。任何JPA實體在某些字段上具有@NotNull bean約束。然後堅持它是一個事務性的方法。使用HSQL，您將得到如下異常：
javax.validation.ConstraintViolationException: Validation failed for classes [MyEntity] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='not a well-formed email address', propertyPath=emailAddress, rootBeanClass=class ..., messageTemplate='{org.hibernate.validator.constraints.Email.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=password, rootBeanClass=class ..., messageTemplate='{javax.validation.constraints.NotNull.message}'}
]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:161)
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94)
at org.hibernate.action.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:160)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:65)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:69)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:179)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:808)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:782)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:786)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:837)
at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
at $Proxy49.persist(Unknown Source)
雖然使用PostgreSQL，您將得到此異常。不要更改任何代碼，只需將驅動程序和方言更改爲PostgreSQL並捕獲異常。
org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:521)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$afterReturning$org_springframework_transaction_aspectj_AbstractTransactionAspect$3$2a73e96c(AbstractTransactionAspect.aj:78)
at EntityService.persist(EntityService.java:82)
...
Caused by: javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:93)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:512)
... 47 more
Caused by: javax.validation.ConstraintViolationException: Validation failed for classes [MyEntity] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='not a well-formed email address', propertyPath=emailAddress, rootBeanClass=class MyEntity, messageTemplate='{org.hibernate.validator.constraints.Email.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=password, rootBeanClass=class MyEntity, messageTemplate='{javax.validation.constraints.NotNull.message}'}
]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:161)
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94)
at org.hibernate.action.EntityInsertAction.preInsert(EntityInsertAction.java:178)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:72)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76)
... 48 more
我不能現在就調試休眠源，但我的猜測是，與HSQL，Hibernate是我的過程中使用的代碼來執行豆驗證之前插入/提交發生PostgreSQL的同時不論是在插入或承諾做。因此，對於HSQL，它只拋出ConstraintViolationException，而對於PostgreSQL，它是一個提交異常，Hibernate將其封裝爲RollbackException，然後Spring將其作爲TransactionSystemException包裝。這只是一個猜測。 –
向我們展示代碼，實體及其映射，以及例外的堆棧跟蹤。我們沒有任何水晶球。 –
好的@JBNizet我添加了堆棧跟蹤。 –