Hibernate在saveOrUpdate上挂起

Question

我在Spring Hibernate应用程序中做了一个标准的getHibernateTemplate（）。saveOrUpdate（），但函数永远不会返回并且不会打印任何错误。

调试日志如下所示。

19:06:07.014 [qtp8540084-26] DEBUG o.s.t.a.AnnotationTransactionAttributeSource - Adding transactional method 'save' with attribute: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
19:06:07.014 [qtp8540084-26] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'transactionManager'
19:06:07.014 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Found thread-bound Session [org.hibernate.impl.SessionImpl@13ca565] for Hibernate transaction
19:06:07.014 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Creating new transaction with name [com.mydao.InventoryDAOImpl.save]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
19:06:07.014 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Preparing JDBC Connection of Hibernate Session [org.hibernate.impl.SessionImpl@13ca565]

19:06:07.014 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - begin
19:06:07.014 [qtp8540084-26] DEBUG org.hibernate.jdbc.ConnectionManager - opening JDBC connection
19:06:07.014 [qtp8540084-26] DEBUG o.s.j.d.DriverManagerDataSource - Creating new JDBCDriverManager Connection to [jdbc:hsqldb:file:hsqldb/MyDB]
19:06:07.014 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - current autocommit status: true
19:06:07.014 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - disabling autocommit
19:06:07.014 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Exposing Hibernate transaction as JDBC transaction [org.hsqldb.jdbc.jdbcConnection@65335b]
19:06:07.030 [qtp8540084-26] DEBUG o.s.orm.hibernate3.HibernateTemplate - Found thread-bound Session for HibernateTemplate
19:06:07.030 [qtp8540084-26] DEBUG o.s.orm.hibernate3.HibernateTemplate - Not closing pre-bound Hibernate Session after HibernateTemplate
19:06:07.030 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Initiating transaction rollback
19:06:07.030 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Rolling back Hibernate transaction on Session [org.hibernate.impl.SessionImpl@13ca565]
19:06:07.030 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - rollback              
19:06:07.030 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - re-enabling autocommit
19:06:07.030 [qtp8540084-26] DEBUG o.h.transaction.JDBCTransaction - rolled back JDBC Connection
19:06:07.030 [qtp8540084-26] DEBUG org.hibernate.jdbc.ConnectionManager - transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
19:06:07.030 [qtp8540084-26] DEBUG o.s.o.h.HibernateTransactionManager - Not closing pre-bound Hibernate Session [org.hibernate.impl.SessionImpl@13ca565] aftertransaction
19:06:07.030 [qtp8540084-26] DEBUG org.hibernate.impl.SessionImpl - disconnecting session
19:06:07.045 [qtp8540084-26] DEBUG org.hibernate.jdbc.ConnectionManager - releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
19:06:07.045 [qtp8540084-26] DEBUG org.hibernate.jdbc.ConnectionManager - transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
19:06:07.045 [qtp8540084-26] DEBUG o.s.a.f.a.ThrowsAdviceInterceptor - Found handler for exception of type [java.lang.Throwable]: public void org.springframework.flex.core.ExceptionTranslationAdvice.afterThrowing(java.lang.Throwable)throws java.lang.Throwable
19:06:07.077 [qtp8540084-26] DEBUG o.s.web.servlet.DispatcherServlet - Null ModelAndView returned to DispatcherServlet with name 'Spring MVC Dispatcher Servlet': assuming HandlerAdapter completed request handling
19:06:07.077 [qtp8540084-26] DEBUG o.s.web.servlet.DispatcherServlet - Successfully completed request
19:06:07.092 [qtp8540084-26] DEBUG o.s.s.w.a.ExceptionTranslationFilter - Chainprocessed normally
19:06:07.092 [qtp8540084-26] DEBUG o.s.s.w.c.SecurityContextPersistenceFilter -SecurityContextHolder now cleared, as request processing completed
19:06:07.092 [qtp8540084-26] DEBUG o.s.o.h.s.OpenSessionInViewFilter - Closing single Hibernate Session in OpenSessionInViewFilter
19:06:07.092 [qtp8540084-26] DEBUG o.s.o.hibernate3.SessionFactoryUtils - Closing Hibernate Session

问候。

Edit1：我可以成功地为其他实体使用相同的DAO方法。 此外，我可以更新此实体的持久对象，但我无法使用saveOrUpdate“保存”或“创建”新实体。

Answer 1

这种挂起可能是由事务之间的死锁引起的。

这种死锁通常是由在单个线程中错误使用多个事务引起的（如果事务A和B由单个线程创建，事务A等待事务B释放锁，但控制流永远不会到达B所到的点。做出承诺）。

因此，请确保正确配置Spring事务管理，并且不要将Spring管理的事务与手动管理的事务混合在一起。

另一个可能的原因是由外部系统创建的长时间运行的事务。 如果您有一些外部系统连接到相关数据库（例如，管理工具），请确保提交由这些系统创建的事务。

Answer 2

如果任何子实体都是延迟获取的，也会发生这种情况。切换到急切获取将解决问题