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I'm working with Spring Boot + Spring Data JPA and facing this problem when trying to inject a class that extends CrudRepository:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'topicRepository': Could not resolve matching constructor (hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)

Repository Class:

public interface TopicRepository extends CrudRepository<Topic, Integer> {}

Service Class:

@Service public class TopicService { @Autowired private TopicRepository topicRepository; }

Any suggestions?

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  • do you have @Repository annotation on your interface? If yes remove it. Commented Feb 15, 2017 at 15:58
  • no i don't have the @Repository annotation on the interface, the classes look exactly like in this post. Thank you. Commented Feb 15, 2017 at 16:05
  • normally this should be enough. Do you have a non default constructor on Topic Service or any other xml configuration? Commented Feb 15, 2017 at 16:11
  • i don't have xml configuration at all and for the TopicService there is only the default constructor.Thank you. Commented Feb 15, 2017 at 16:14
  • Can you provides us with your jpa configuration? Provided you have a custom jpa configuration. Thank you Commented Feb 15, 2017 at 16:24

6 Answers 6

Reset to default
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I was having the same issue, and I fixed it by switching Spring Boot versions. Changing the Spring Data JPA versions did nothing (this is where I assumed the bug would be), so I think there is a bug in Spring Boot version 1.5.1. I switched back to version 1.4.3 and the error was gone. I didn't try subsequent/different versions, so you may just have to experiment with your dependencies and their versions.

For the record, you can have your service class annotated with @Repository, it shouldn't make any difference. I've been setting these apps up the same way using the service/dao pattern, and it has never been too picky with the annotations. Hopefully this may help others whose Spring Boot development flow suddenly throws an error!

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Which versions of spring-data-commons and spring-data-jpa are you using. I just ran into this using spring-data-commons 1.13.x with spring-data-jpa 1.10.x. Upgrading spring-data-jpa to 1.11.x fixed the issue for me.

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Thanks for working this out already with the version combinations. It helped.
Thank you so much...spent 3 hours on this! You rock!
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I too had the same issue after updating Spring Boot to 1.5.4.

I am also using spring-data-envers, which was at version 1.0.4. Upgrading to 1.4.1 solved the problem.

I hope it helps someone :)

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Make sure:

1) TopicRepository is annotated with @Repository.

2) You have the scanning packages configured:

<jpa:repositories base-package="mypkg.repositories"></jpa:repositories>
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both is not necessary to do.
Spring data scans for repositories that extend CrudRepository, JPARepository etc. The @Repository annotation for spring data in not needed.
According to the Sprign spec docs.spring.io/spring-data/jpa/docs/current/reference/html, you should add that configuration with JavaConfig - @EnableJpaRepositories or with xml as i specified
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Had the same issue on 1.5.2. Upgrading to 1.5.5 solved the problem.

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You can use Applicationcontext to inject repository to this reference topicRepository.. You just declare applicationcontext in @rest controller class Same like topicRepository by using annotation. Then you pass this to the service class which should take parms through constructor. Ex- public TopicService(Applicationcontext ctx) {this.topicRepository =context.getBean(TopicRepository.class); }

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