需要一个无法找到的 Repository 类型的 bean

Question

我正在为在家中进行一些有趣的学习/教程设置一个新的 Spring 项目，我似乎遇到了一个相当普遍的问题，但我已经尝试了我在这里找到的所有可能的解决方案，但没有运气。基本上我所拥有的如下：

控制器类：

@RestController
@RequestMapping(value = "/shop")
public class ShopController {

    @Autowired
    ShopService shopService;

    @GetMapping(value = "/{id}")
    public @ResponseBody Shop getTestData(@PathVariable String id) {
        return shopService.getShopBasedOnId(id);
    }

}

服务类：

@Service
public class ShopService {

    @Autowired
    private ShopRepository shopRepository;

    public ShopService(ShopRepository shopRepository){
        this.shopRepository = shopRepository;
    }

    public Shop getShopBasedOnId(String id) {
        return shopRepository.findByShopId(id);
    }
}

存储库类：

@Repository
public interface ShopRepository extends PagingAndSortingRepository<Shop, String> {

        Shop findByShopId(String shopId);
}

应用类：

@SpringBootApplication
@EnableJpaRepositories("com.example.reservations.repository")
public class ReservationsApplication {

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

}

最后但并非最不重要的是我的 pom.xml 与依赖项：

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-couchbase</artifactId>
            <version>4.0.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>2.0.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.3.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.2.Final</version>
        </dependency>

所以我得到的错误代码如下：

Description:

Parameter 0 of constructor in com.example.reservations.services.ShopService required a bean of type 'com.example.reservations.repository.ShopRepository' 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 'com.example.reservations.repository.ShopRepository' in your configuration.

我的文件夹结构是：

main
 |_java
    |_com.example.reservations
         |_controllers
              |_ShopController.java
         |_repository
              |_ShopRepository.java
         |_services
              |_ShopService.java
         |_ReservationsApplication.java

Answer 1

问题可能是 ShopService 中的 @Autowired

@Service

public class ShopService {

@Autowired
private ShopRepository shopRepository;

public ShopService(ShopRepository shopRepository){
    this.shopRepository = shopRepository;
}

public Shop getShopBasedOnId(String id) {
    return shopRepository.findByShopId(id);
}
 }` 

应该是 @服务 公共类 ShopService {

private ShopRepository shopRepository;

public ShopService(ShopRepository shopRepository){
    this.shopRepository = shopRepository;
}

public Shop getShopBasedOnId(String id) {
    return shopRepository.findByShopId(id);
}
}

您也可以在构造函数上方添加@Autowired，但如果只有一个构造函数则不再需要

Answer 2

原来我必须有一个 couchbase 存储库的配置文件。我所做的是遵循以下link，现在一切正常！