Springboot 整合 elasticsearch7

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

<dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-high-level-client</artifactId>
        <version>7.11.2</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.elasticsearch/elasticsearch -->
      <dependency>
        <groupId>org.elasticsearch</groupId>
        <artifactId>elasticsearch</artifactId>
        <version>7.11.2</version>
      </dependency>
      <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-client</artifactId>
        <version>7.11.2</version>
      </dependency>
    </dependencies>
</dependencyManagement>

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

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));
       }
   }