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implementing JPA Entity Graphs and Lazy Loading in Spring Boot 2.5

👀 Views: 93 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-06
java spring-boot jpa hibernate Java

I'm dealing with After trying multiple solutions online, I still can't figure this out... I'm working with a question with JPA entity graphs in my Spring Boot 2.5 application. I have a `User` entity that has a many-to-one relationship with a `Profile` entity, and I want to fetch users along with their profiles using entity graphs. However, when I try to access the profile of a user after fetching it with an entity graph, I get a `LazyInitializationException` unless the transaction is still active. Here's the relevant part of my code: ```java @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne(fetch = FetchType.LAZY) @JsonIgnore private Profile profile; // Getters and setters } @Entity public class Profile { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String bio; // Getters and setters } @Repository public interface UserRepository extends JpaRepository<User, Long> { @EntityGraph(attributePaths = "profile") List<User> findAll(); } ``` When I call `userRepository.findAll()` and try to access the `profile` of the returned `User` objects outside the transactional context, I see the following behavior: ``` org.hibernate.LazyInitializationException: could not initialize proxy - no Session ``` To troubleshoot, I've tried: 1. Ensuring that the fetch type for the `profile` relationship is `LAZY`. 2. Adding `@Transactional` annotations to my service layer methods, but this does not seem to resolve the scenario. 3. Switching to `FetchType.EAGER` for the profile relationship, which works but defeats my intention of lazy loading. I want to avoid using EAGER fetching and maintain the benefits of lazy loading while still being able to access profile data without hitting this exception. What could I be missing in my configuration or approach that is preventing the lazy loading from working correctly with entity graphs? Any help would be greatly appreciated! This is happening in both development and production on Linux. Is there a simpler solution I'm overlooking? This is happening in both development and production on Linux. Thanks for your help in advance! What's the correct way to implement this?