尽管有@enableJParepositories注释，Spring JPA没有实现/autowiring存储库

Question

当我启动应用程序时，我得到了一个异常，其中Spring抱怨UnsatifiedDependencyException：

Exception in thread "main" org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'applicationConfig': Unsatisfied dependency expressed through field 'controlRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean found for dependency [com.oak.api.finance.repository.ControlRepository]: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)

我的应用程序是以这种格式组织的：

>

我用正确的Spring JPA注释声明了我的存储库接口：

@RepositoryRestResource(collectionResourceRel = "exchange", path = "exchanges")
public interface ControlRepository extends PagingAndSortingRepository<Control, Long> { 
}

@SpringBootApplication
@EntityScan(basePackages = {"com.oak.api.finance.model.dto"})
@EnableJpaRepositories(basePackages = {"com.oak.api.finance.repository"})
public class EntryPoint {
    public static void main(String[] args) {
        Logger logger = LogManager.getLogger(EntryPoint.class);
        logger.info("Starting application");

        ApplicationContext ctx = new AnnotationConfigApplicationContext(ApplicationConfig.class);
//      SpringApplication.run(EntryPoint.class, args);

        ctx.getBean(ApplicationServer.class).start();
    }

@Autowired 
private ControlRepository controlRepository;
@Autowired
private CompanyRepository companyRepository;
@Autowired
private SectorRepository sectorRepository;

    ApplicationContext ctx = new AnnotationConfigApplicationContext(ApplicationConfig.class)

这显然没有发生，Spring正在向autowire抱怨丢失了Bean，但我不确定我丢失了什么。

Answer 1

我的猜测是您的存储库没有被扫描，因此bean没有被创建。你能试着删除这两个注释吗

@EntityScan(basePackages = {"com.oak.api.finance.model.dto"})
@EnableJpaRepositories(basePackages = {"com.oak.api.finance.repository"})

并且只保留@springbootapplication。如果这不起作用，您可能需要检查包结构（如果可能，请在此处粘贴截图）

将@springbootapplication替换为

@Configuration
@EnableAutoConfiguration
@ComponentScan("com.oak")

 new SpringApplicationBuilder() 
        .sources(SpringBootApp.class) 
        .web(false) 
        .run(args);