引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
    <!--<version>2.1.5.RELEASE</version>-->
    <version>2.2.2.RELEASE</version>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

配置yml

spring:
data:
  elasticsearch:
    cluster-name: es6
    cluster-nodes: 127.0.0.1:9300

版本协调
当前版本spring-boot-starter-data-elasticsearch中的es版本贴合6.4.3，需要Elasticsearch版本一致

Netty issue fix

@Configuration
public class ESConfig {

    /**
     * 解决netty引起的issue
     */
    @PostConstruct
    void init() {
        System.setProperty("es.set.netty.runtime.available.processors", "false");
    }

}