spring boot 集成spring-boot-starte

我的项目结构

***-api:接口层

***-app：业务层

***-domain：领域层

***-sharedModel：共享模型

***-infrastructure：基础层

继承ElasticsearchRepository接口的类在基础层，代码如下:

@Repository

public interface QuestionEsRepository extends ElasticsearchRepository {

}

ES相关配置ben也在此层，代码如下：

@Configuration
@EnableElasticsearchRepositories
public class ElasticsearchConfiguration extends AbstractElasticsearchConfiguration {

  @Value("${spring.elasticsearch.rest.uris}")
  private String uris;

  @Override
  @Bean
  public RestHighLevelClient elasticsearchClient() {
    final ClientConfiguration clientConfiguration =ClientConfiguration.builder().connectedTo(uris.split(","))
          .withConnectTimeout(Duration.ofSeconds(5))
          .withSocketTimeout(Duration.ofSeconds(30))
          .build();
    return RestClients.create(clientConfiguration).rest();
  }

  @Bean("esRestTemplate")
  public ElasticsearchRestTemplate esRestTemplate() {
      return new ElasticsearchRestTemplate(elasticsearchClient());
  }
}

api层是整个系统的入口，也就是会启动springboot，在启动时，总是会报如下错误：

Field questionRepository in com******domain.service.QuestionDomainService 
required a bean of type 'com.*******.QuestionEsRepository' that could not be found.

也就是说，spring boot是无法动态生成QuestionEsRepository接口的代理对象的。经过这样那样的搜....。最终发现，应该在配置类ElasticsearchConfiguration，的@EnableElasticsearchRepositories注解中，增加对于继承es包的扫描。

代码修改后如下：
@EnableElasticsearchRepositories(basePackages = {"com.****.gatewayimpl"})

配置类完整代码如下：

@Configuration
@EnableElasticsearchRepositories(basePackages = {"com.****.gatewayimpl"})
public class ElasticsearchConfiguration extends AbstractElasticsearchConfiguration {
  @Value("${spring.elasticsearch.rest.uris}")
  private String uris;

  @Override
  @Bean
  public RestHighLevelClient elasticsearchClient() {
    final ClientConfiguration clientConfiguration =ClientConfiguration.builder().connectedTo(uris.split(","))
          .withConnectTimeout(Duration.ofSeconds(5))
          .withSocketTimeout(Duration.ofSeconds(30))
          .build();
    return RestClients.create(clientConfiguration).rest();
  }

  @Bean("esRestTemplate")
  public ElasticsearchRestTemplate esRestTemplate() {
      return new ElasticsearchRestTemplate(elasticsearchClient());
  }
}
 

具体原理还待有时间深入研究