springboot2整合elasticsearch

注：elasticsearch的版本为7.14.1

1，引入依赖

        
            org.springframework.boot
            spring-boot-starter-data-elasticsearch
        
        

2，因elasticsearch7.x中spring.data.elasticsearch.cluster-name，cluster-nodes等属性过时，因此需要配置一个RestHighLevelClient。

@Configuration
public class ElasticsearchConfig {
    @Bean
    RestHighLevelClient elasticsearchClient() {
        ClientConfiguration configuration = ClientConfiguration.builder()
                .connectedTo("192.168.1.6:9200")
                //.withConnectTimeout(Duration.ofSeconds(5))
                //.withSocketTimeout(Duration.ofSeconds(3))
                //.useSsl()
                //.withDefaultHeaders(defaultHeaders)
                //.withBasicAuth(username, password)
                // ... other options

                .build();
        RestHighLevelClient client = RestClients.create(configuration).rest();
        return client;
    }
}

3,新建dao继承ElasticsearchRepository

import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import java.util.List;

public interface TestDao extends ElasticsearchRepository {
    List findByName(String name);

    List findByNameOrDesc(String text);
}