新建SpringBoot项目：

修改pom.xml文件，引入spring-boot-data-elasticsearch Jar 包：

org.springframework.boot spring-boot-starter-data-elasticsearch 2.2.2.RELEASE

修改application.yml文件，引入elasticsearch配置：

spring:
data:
elasticsearch:

集群名称，elasticsearch.yml的cluster.name: chenxi配置

  ##详情见 http://chenxitag.elasticsearch.cluster.com
  cluster-name: chenxi
  ##集群地址逗号分隔，注意此地方用的端口为9300，Es集群TCP协议端口
  cluster-nodes: 192.168.0.1:9300,192.168.0.2:9300

新建测试Entity：

import lombok.Data;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;

@Document(indexName = "chenxi", type = "user"/shards = 1, replicas = 2 ##可指定分片数和副本数/)
@Data
public class UserEntity {
@Id
private Integer id;
private String name;
private Integer age;
}

新建测试Dao：

import com.es.entity.UserEntity;
import org.springframework.data.repository.CrudRepository;

public interface UserDao extends CrudRepository<UserEntity, Integer> {
}

新建Test类测试：

import com.es.dao.UserDao;
import com.es.entity.UserEntity;
import com.google.gson.Gson;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;

@SpringBootTest
@Slf4j
class EsTestApplicationTests {

@Test
void contextLoads() {
}

@Autowired
private UserDao userDao;

@Autowired
private ElasticsearchTemplate esTemplate;

@Test
void esSave(){

  UserEntity esEntity = new UserEntity();
  esEntity.setId(1);
  esEntity.setName("chenxi");
  esEntity.setAge(22);

  userDao.save(esEntity);

}

@Test
void esFind(){
log.info(new Gson().toJson(userDao.findById(1)));
//info out "{"value":{"id":1,"name":"chenxi","age":22}}"
}

@Test
void esTemplate(){
log.info(String.valueOf(esTemplate.createIndex("template_index")));
//info out "true"
}

错误信息：NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{P20ipqqfSNCzjirh0puSTQ}{192.168.0.1}{192.168.0.1:9300}, {#transport#-2}{I4slCrNuTbmVTOSZ3DG7hA}{192.168.0.2}{192.168.0.2:9300}]

请检查Es是否启动，以及Es环境elasticsearch.yml集群配置项：

———————————- Cluster ———————————–

#

Use a descriptive name for your cluster:

节点集群名称，保证三台服务器节点集群名称相同

cluster.name: chenxi