扩展MongoRepository的存储库的RESTendpoint未映射

Question

我已经实现了Spring数据存储库，它使用@RepositoryRestResource注释扩展MongoRepository，将它们标记为RESTendpoint。但当映射请求id时，会得到以下异常

java.lang.IllegalArgumentException: Couldn't find PersistentEntity for type class io.sample.crm.models.Merchant!

存储库：

@RepositoryRestResource(collectionResourceRel = "account",path = "account")
public interface MerchantRepository extends MongoRepository<Merchant,String> { 

}

GET 请求我正在尝试：

http://localhost:9090/crm/account/

回应：

{
"cause": null,
"message": "Couldn't find PersistentEntity for type class io.apptizer.crm.apptizercrmservice.models.Merchant!"
}

另外，我为每个存储库配置了两个数据库。

Application.yml文件：

spring:
  autoconfigure:
    exclude: org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration

mongodb:
   primary:
     host: 127.0.0.1
     port: 27017
     database: db_sample_admin_crm
      rest:
        base-path: /crm
   secondary:
     host: 127.0.0.1
     port: 27017
     database: sample_lead_forms
       rest:
         base-path: /reports

主要类 ：

@SpringBootApplication(scanBasePackages = "io.example")
@Configuration
@ComponentScan({"io.example"})
@EntityScan("io.example")
public class App {

public static void main(String[] args) throws Exception {
    SpringApplication.run(App.class, args);
    InitAuth.initialize();
    InitAuth.generateToken();
  }
}

这里会出什么问题？

Answer 1

首先检查是否正确添加了所有依赖项。需要以下依赖关系:

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

错误响应显示找不到类型classio.apptizer.crm.apptizercrmservice.models.Merchant的PersistentEntity！，因此Merchant类可能不在类路径中，并且Spring无法识别域对象。尝试为商家提供一个实体类，例如：

public class Merchant{

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    private String firstName;
    private String lastName;

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}

@RepositoryRestResource(collectionResourceRel = "account", path = "account")
public interface MerchantRepository extends MongoRepository<Merchant, String> {

    List<Person> findByLastName(@Param("name") String name);

}

之后，检查您是否正确地提供了所有注释。尝试将控制器添加到主应用程序的组件扫描中:

@SpringBootApplication
@EnableMongoRepositories("com.example.MerchantRepository")
@ComponentScan(basePackages = {"com.example"})
@EntityScan("com.example.mongo.Merchant")
public class Application {

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

@ComponentScan告诉Spring在包中查找其他组件、配置和服务，允许它查找控制器。

参考这里。

Answer 2

当我遇到同样的问题时，我将@Id改为Long类型。

请检查您的扩展MongoRepository