无法将存储库从外部Jar自动连接到Spring Boot App [英] Can't autowire repository from an external Jar into Spring Boot App

问题描述

我已经将应用程序的整个实体和存储库接口打包到一个jar中.存储库使用@Repository批注编写:

I have packaged my entire entities of the application and the repository interfaces into one jar. The repositories are written with @Repository annotation:

@Repository
public interface InternalUserRepository extends JpaRepository<InternalUser, Long>{

}

我已经将这个jar文件包含在我的spring boot应用程序中，并试图从控制器中像这样自动连接接口:

I have included this jar file inside my spring boot application and trying to autowire the interface like this from a controller:

@RestController
public class AuthenticationController {

    @Autowired
    AuthenticationService authenticationService;

    @Autowired
    InternalUserRepository internalUserRepository;


    @GetMapping("/")
    public String home() {
        return "Hello World!";
    }

}

我的主应用程序类的编写方式如下:

My Main app class is written like:

@SpringBootApplication
@EnableJpaRepositories
@ComponentScan("com.cdac.dao.cdacdao.*")
public class CdacAuthenticationMgntApplication {

public static void main(String[] args) {
    SpringApplication.run(CdacAuthenticationMgntApplication.class, args);
}
}

存储库未自动连接.当我启动Spring boor应用程序时，出现以下错误:

The repository is not getting autowired. When I am firing up the Spring boor application I am getting the following error:

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

Description:

Field internalUserRepository in 
com.cdac.user.cdacauthenticationmgnt.controller.AuthenticationController required a bean of type 'com.cdac.dao.cdacdao.repository.InternalUserRepository' that could not be found.


Action:

Consider defining a bean of type 'com.cdac.dao.cdacdao.repository.InternalUserRepository' in your configuration.

有人尝试过类似的架构吗?

Have anyone tried similar architecture like this?

推荐答案

如果您的JPA信息库与Spring Boot应用程序类不在同一个包中，则必须在EnableJpaRepositories批注(而不是Component)上指定该包:

If your JPA repositories are in a different package than your Spring Boot application class, you have to specify that package on the EnableJpaRepositories annotation, not Component:

@EnableJpaRepositories("com.cdac.dao.cdacdao")

您在ComponentScan上指定的包用于将类检测为常规Spring Bean，而不是存储库接口.

The package you specified on ComponentScan is for detecting classes as regular Spring beans, not repository interfaces.

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