Hibernate JPA and Spring javax.persistence.TransactionRequiredException: no transaction is in progress

Question

When I call:

entityManager.flush()

I get the exception mentioned in the title.

I am using Hibernate JPA.

Answer 1

After encountering this problem myself and spending a few hours trying to get it resolved I finally found a reason for it: Spring has a bug and can't maintain transactions with @Transactional annotation if the same class has @Service annotation for the means of autowiring.

Once the @Service annotation was removed from the service class in question, and an appropriate bean was declared in the XML config:

<bean id="myService" class="com.example.myapp.service.MyServiceImpl" />

the problem is gone.

Check this JIRA bug for more details.

Answer 2

I did all the thing as a following. My problems was with "import" tag, there are several context root like servlet-context and root-context which are not dependent on each other. It becomes clear with Spring Explorer view in STS. No JTA for Tomcat.

My advice would be universal: run Pet Clinic on your environment , How to run Spring 3.0 PetClinic in tomcat with Hibernate backed JPA or generate with Roo stub of application and try to compare your configs with referenced.

Answer 3

Make sure that your spring configuration includes the following line:

<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager" />

mode can be either proxy or aspectj and transaction-manager has to point to your transaction manager been.

Answer 4

Please make sure that your handler method is declared as public

@Transactional 
@RequestMapping('/test')
public String doTest() {
    // do your stuff here 
    return 'testview';
}

Answer 5

I had this problem, just add @Transacctional annotation not only on the method, also in the class together with your @Service annotation.

for example:

@Service
@Transactional
public class MyService {

}

Answer 6

I have finally fixed this error by adding

<tx:annotation-driven mode="aspectj" transaction-manager="yourTransactionManager" />

into my application-context.xml