EntityManager 的 SessionFactory 抛出异常
SessionFactory from EntityManager throws exception
我正在尝试使用以下行从 JPA 的 EntityManager 获取 Hibernate 的 SessionFactory:
@PersistenceContext
EntityManager manager;
public SessionFactory getSessionFactory(){
sessionFactory = manager.unwrap(SessionFactory.class);
}
但是它抛出这个异常:
org.springframework.orm.jpa.JpaSystemException: Hibernate cannot unwrap interface org.hibernate.SessionFactory; nested exception is javax.persistence.PersistenceException: Hibernate cannot unwrap interface org.hibernate.SessionFactory
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:418)
...
Caused by: javax.persistence.PersistenceException: Hibernate cannot unwrap interface org.hibernate.SessionFactory
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.unwrap(AbstractEntityManagerImpl.java:1489)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
这可能是什么原因?
提前致谢
您不能使用unwrap
获取会话工厂,您可以使用它获取会话。
从会话中,如果你需要,可以获取工厂:
public SessionFactory getSessionFactory(){
Session session = manager.unwrap(Session.class);
sessionFactory = session.getSessionFactory();
}
我正在尝试使用以下行从 JPA 的 EntityManager 获取 Hibernate 的 SessionFactory:
@PersistenceContext
EntityManager manager;
public SessionFactory getSessionFactory(){
sessionFactory = manager.unwrap(SessionFactory.class);
}
但是它抛出这个异常:
org.springframework.orm.jpa.JpaSystemException: Hibernate cannot unwrap interface org.hibernate.SessionFactory; nested exception is javax.persistence.PersistenceException: Hibernate cannot unwrap interface org.hibernate.SessionFactory
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:418)
...
Caused by: javax.persistence.PersistenceException: Hibernate cannot unwrap interface org.hibernate.SessionFactory
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.unwrap(AbstractEntityManagerImpl.java:1489)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
这可能是什么原因?
提前致谢
您不能使用unwrap
获取会话工厂,您可以使用它获取会话。
从会话中,如果你需要,可以获取工厂:
public SessionFactory getSessionFactory(){
Session session = manager.unwrap(Session.class);
sessionFactory = session.getSessionFactory();
}