一、创建springboot项目

• 创建springboot项目步骤参考此博文链接：https://wwwxz.blog.csdn.net/article/details/91977374

二、pom.xml文件引入相关maven依赖

• 引入elasticsearch依赖

  <!-- elasticsearch 依赖 -->
  <dependency>
      <groupId>org.elasticsearch</groupId>
      <artifactId>elasticsearch</artifactId>
      <version>7.8.0</version>
  </dependency>
  <!-- elasticsearch 的客户端 -->
  <dependency>
      <groupId>org.elasticsearch.client</groupId>
      <artifactId>elasticsearch-rest-high-level-client</artifactId>
      <version>7.8.0</version>
  </dependency>
  <!-- elasticsearch 依赖 2.x 的 log4j -->
  <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
      <version>2.8.2</version>
  </dependency>
  <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.8.2</version>
  </dependency>
  <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.9</version>
  </dependency>
  <!-- junit 单元测试 -->
  <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
  </dependency>
  

三、创建客户端对象

• 创建客户端对象代码示例

  package com.xz.esdemo.day1;
  
  import org.apache.http.HttpHost;
  import org.elasticsearch.client.RestClient;
  import org.elasticsearch.client.RestHighLevelClient;
  
  import java.io.IOException;
  
  /**
   * @description:  客户端对象
   * @author: xz
   */
  public class EsClient {
      public static void main(String[] args) throws IOException {
          // 创建Elasticsearch客户端对象
          RestHighLevelClient client = new RestHighLevelClient(
                  RestClient.builder(new HttpHost("localhost", 9200, "http"))
          );
  
          // 关闭 Elasticsearch客户端连接
          client.close();
      }
  }
  

• 执行代码，查看控制台信息，如下图表示创建客户端对象ok
  
  注意：9200 端口为 Elasticsearch 的 Web 通信端口 ，localhost 为启动 Elasticsearch 服务的主机名。