CODEWITHSUNDEEP
javaspringjpaspring-bootpostconstruct
Yassine Abainou
Yassine Abainou

Reputation: 185

@PostConstruct on JPA entity not called in Spring Boot

I'm using Spring Boot and I added @PostConstrcut annotation to my JPA Entity as shown , but When the entity is instantiated this interceptor is never called .

@Entity
public class MyTableName implements java.io.Serializable {
   // all attributes
   @PostConstruct
   public void init(){
     // This code never called
     System.out.println("PostConstruct");
   }
}

Upvotes: 5

Views: 7508

Answers (3)

Klaus Groenbaek
Klaus Groenbaek

Reputation: 5035

JPA Entities are not spring managed beans, so Spring will never call @PostConstruct. Entities have their own Entity listener annotations, but there is nothing with the semantics of @PostConstruct (@PrePersist and @PostLoad are probably the closest). Entities need to have a default constructor, because all JPA implementations use Class.newInstance() as the default instantiation policy. A good JPA provider will allow you to customize the instantiation policy, so it is possible to write you own interception of @PostConstruct and invoke it, it is also possible to @Autowire spring beans into entities if you want. However you should never register JPA entities as Spring beans.

Upvotes: 17

Yassine Abainou
Yassine Abainou

Reputation: 185

I found the solution, in fact, instead of using the @PostConstruct annotation (managed by container) , I used @PostLoad (managed by ORM). Thank you.

Upvotes: 3

anand1st
anand1st

Reputation: 1176

Why would you want to have a @PostConstruct inside an entity bean? I think there's a design smell here. Maybe you are referring to methods with @PrePersist, @PreUpdate or @PostPersist @PostUpdate annotations that run code before or after saving entity?

Upvotes: 0

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