Elasticsearch（二）集成Spring Boot 基本的API操作

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.17.24</version>
</dependency>

1、创建项目

如果创建项目后拉取不到对应依赖，springboot 可以选用低一些的稳定版本例如 2.3.2.RELEASE 版本

2、pom文件查看springboot集成的依赖

（当然也可自定义ES版本）

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

3、增加es的config类

package com.example.elasticsearch_springboot_demo.config;

import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class ElasticSearchClientConfig {

    @Bean
    public RestHighLevelClient restHighLevelClient(){
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(
                        new HttpHost("localhost", 9200, "http"),
                        new HttpHost("localhost", 9201, "http")));
        return client;
    }
}

二、索引相关API

1、创建索引

@SpringBootTest
class ElasticSearchSpringbootDemoApplicationTests {

    @Autowired
    @Qualifier("restHighLevelClient")
    private RestHighLevelClient client;

    /**
     * 【索引相关】索引创建
     */
    @Test
    void testCreateIndex() throws IOException {
        // 1、创建索引请求
        CreateIndexRequest request = new CreateIndexRequest("m_index");
        // 2、客户端执行请求 IndicesClient，执行创建请求 并获得响应结果
        CreateIndexResponse createIndexResponse = client.indices().create