👀 Views: 14 💬 Answers: 1 📅 Created: 2025-06-08

spring spring-boot dependency-injection Java

I'm relatively new to this, so bear with me. I've been struggling with this for a few days now and could really use some help. I've looked through the documentation and I'm still confused about I'm encountering a problem with a Spring Boot application where I'm trying to inject a prototype-scoped bean into a singleton-scoped bean... The application fails to start with a `BeanCurrentlyInCreationException` indicating a circular reference. My intention is to have a service that retrieves user information from a prototype-scoped bean defined as a repository. Here's the relevant part of my configuration: ```java @Configuration public class AppConfig { @Bean @Scope("prototype") public UserRepository userRepository() { return new UserRepository(); } @Bean public UserService userService(UserRepository userRepository) { return new UserService(userRepository); } } ``` When I try to run the application, I get the following error: ``` org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'userService': Requested bean is currently in creation: Is there an unresolvable circular reference? ``` I've tried using `@Lazy` on the `UserService` to defer its initialization, but that didn't resolve the issue. Also, I've considered changing the scope of the `userService` bean to prototype, but that doesn't seem ideal as I want to maintain a singleton service for user handling. I've been reading about the best practices related to scope management in Spring and I'm puzzled about how to handle this scenario correctly. Any insights or suggestions on how to resolve this circular dependency without compromising the design would be greatly appreciated. I'm working on a web app that needs to handle this. Is there a better approach? I'd really appreciate any guidance on this. This is part of a larger web app I'm building. Is this even possible?