Session is closed before concluding request in Spring MVC, get LazyInitializationException

Question

I am taking the LazyInitializationException error when because in myController when I read the Lazy collections session is already closed. Is there any way to get it open as long as there is a request? As OpenSessionInView? What would be the best way?

I'm using the version of Spring Boot 1.3.0

You need to either extend the scope of transaction to the mentioned controller or perfom lazy fetch when reading the entity (it would be easy if you were executing JPQL). OSIV is not the best choice imo. — Rafal G., Nov 29 '15 at 14:10
The spring call the hashCode of my object and I get the Lazy error. — darksteel3000, Nov 29 '15 at 14:46
You can user @Transactinal for open session troughtout the logic refer this http://stackoverflow.com/questions/26611173/jpa-jta-transactional-spring-annotation/26615390#26615390 — Harshal Patil, Nov 29 '15 at 16:32
@Transaction is used by the Service layer only, not? Can I use this in @Controller? — darksteel3000, Nov 29 '15 at 18:25

score 0 · Answer 1 · answered Nov 29 '15 at 17:26

0

You need use the "open session in view" to keep the session open after the end of the transaction.

see OpenSessionInViewFilter or OpenEntityManagerInViewFilter for JPA

imho it's better than extending the scope of the transaction to your controller.

answered Nov 29 '15 at 17:26

benbenw

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score 0 · Answer 2 · answered Nov 29 '15 at 20:49

If you're using a jackson/hibernate combination you can register the jackson-datatype-hibernate module, and tweak the Feature.FORCE_LAZY_LOADING property to your liking. The default is false means that only already fetched properties will be serialized. Changing to true will force initialization of the lazy properties

Session is closed before concluding request in Spring MVC, get LazyInitializationException

2 Answers2