Why does getOne(…) on a Spring Data repository not throw an EntityNotFoundException?

Question

I\'m working on a weird issue, I was doing integration testing, calling my controller to get an object from database that doesn\'t exist.

public Optional<         


        

Answer 1

In Spring @Repository classes, the getOne(id) method doesn't always verify existence until the object is queried (by calling entity.getId() or something) so it's no-such-entity exception may be delayed. To validate right away, use findById(id) instead (which returns an Optional which will be empty if the entity with that id doesn't exist).

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This is how it worked for me

public User findUserById(Long id) {
    return userRepository.findById(id).orElse(null);
}