@Repository接口上的Bean创建错误

Question

import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

import java.util.Optional;

@Repository
public interface FormRepository extends MongoRepository<Form, Integer> {
    
    Optional<Form> findById(Integer formId);
}

这是我创建的mongo存储库。我访问它的方式如下：

@Service
public class FormServiceImpl implements FormService {

        @Autowired
        FormRepository formRepository;
    @Override
    public List<Question> getQuestions(Integer formId, ){
            List<Question> questionList = new ArrayList<>();
            ..........
            ......................
            ........ initialise questionlist .............
            ......................

            formRepository.save(new Form(questionList, "firstForm"));
            return questionList;
        }
    }

我得到的错误-

***************************
APPLICATION FAILED TO START
***************************

Description:

Field formRepository in *.service.impl.FormServiceImpl required a bean of type '*.service.FormRepository' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type '*.service.FormRepository' in your configuration.


Process finished with exit code 1

我的想法是：@Repository应该足以将FormRepository注册为bean。然而，事实并非如此。我无法将FormRepository接口注册为bean。上面的两个文件位于同一个包中。我已经将前缀路径替换为*-但请放心*在任何地方都有相同的含义。如果有任何额外的日志，请告诉我。

编辑：

我在我的主应用程序类中添加了@EnableMongorPositories。这就导致了这个错误-

2022-04-24 19:20:29.085 ERROR 2941 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Field formRepository in *.service.impl.FormServiceImpl required a bean named 'mongoTemplate' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean named 'mongoTemplate' in your configuration.


Process finished with exit code 1

我认为MongoTemplate和MongoRepository是两个截然不同的东西。为什么我的mongo回购协议需要依赖MongoTemplate？

Answer 1

由于您使用的是mongo，因此需要添加额外的注释。

@SpringBootApplication
@EnableMongoRepositories(basePackageClasses = FormRepository .class)
public class MainClass {}

还要确保文件夹结构正确。

对于另一个问题，您应该在“POM”中添加依赖项

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

这一切都是关于mongo配置的。希望这有帮助。