Springboot 整合 elasticsearch

本文为 elasticsearch7.11.2整合

1. 当 spring-boot-starter-parent 与自己的 es 版本不匹配时,需要单独声明保证兼容性

    
      
        org.elasticsearch.client
        elasticsearch-rest-high-level-client
        7.11.2
      
      
      
        org.elasticsearch
        elasticsearch
        7.11.2
      
      
        org.elasticsearch.client
        elasticsearch-rest-client
        7.11.2
      
    

    org.elasticsearch.client
    elasticsearch-rest-high-level-client

2. 配置文件

   spring:
     elasticsearch:
       rest:
         uris: http://192.168.31.201:9200,http://192.168.31.202:9200,http://192.168.31.203:9200
   

3. 配置类

   package com.example.springplayground.config;
   
   import org.apache.http.HttpHost;
   import org.elasticsearch.client.RestClient;
   import org.elasticsearch.client.RestHighLevelClient;
   import org.springframework.beans.factory.annotation.Value;
   import org.springframework.context.annotation.Bean;
   import org.springframework.context.annotation.Configuration;
   
   import java.util.Arrays;
   
   /**
    * @author zhangfan
    */
   @Configuration
   public class ESConfig {
       @Value("${spring.elasticsearch.rest.uris}")
       private String[] uris;
   
       @Bean
       public RestHighLevelClient restHighLevelClient() {
           final HttpHost[] httpHosts = Arrays.stream(uris).map(HttpHost::create).toArray(HttpHost[]::new);
           return new RestHighLevelClient(RestClient.builder(httpHosts));
       }
   }