java Hibernate flush（）影响事务

Question

我有以下测试用例：

@Test
fun givenEntity_whenSaved_thenFound() {
    doInHibernate<Unit>(({ this.sessionFactory() }), { session ->
        val entity = getSampleEntity()

        session.persist(entity)
        session.flush()

        val entityFound = session.find(Entity::class.java, entity.id)

        session.refresh(entityFound )
        assertTrue(entityFound == entity)

        session.transaction.rollback()
    })
}

所以我认为session.flush()不会影响我的事务，因此它可以回滚。不管它如何影响它，我得到以下错误：

Transaction not successfully started
java.lang.IllegalStateException: Transaction not successfully started
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:95)
    at org.hibernate.testing.transaction.TransactionUtil.doInHibernate(TransactionUtil.java:301)
    at data.base.EntityTest.givenEntity_whenSaved_thenFound(EntityTest.kt:20)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
    at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:288)
    at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:282)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.lang.Thread.run(Thread.java:834)

这个特定案例的解决办法是这样，但这仍然不能解释交易受到影响的原因

doInHibernate<Unit>(({ this.sessionFactory() }), { session ->
            val entity = getSampleEntity()

            session.persist(entity)
            assertTrue(session.contains(entity))

        })

Answer 1

所以我不确定，但我想我的问题是我启用了自动提交。因此，一个可能的解决办法是：

hibernate.connection.autommit=false