如何正确地将Spring Boot应用连接到Elasticsearch 6.1？

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

spring.data.elasticsearch.cluster-name=my-cluster
spring.data.elasticsearch.cluster-nodes=localhost:9300

import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;

@Document(indexName = "my_index", type = "my_type")
public class MyEntity {
    @Id
    private String id;
    // other fields and getters/setters
}

import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

public interface MyEntityRepository extends ElasticsearchRepository<MyEntity, String> {
    // custom query methods
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MyService {
    @Autowired
    private MyEntityRepository repository;

    public void saveEntity(MyEntity entity) {
        repository.save(entity);
    }

    // other methods
}