Spring Boot 连接Elasticsearch 报NoNodeAvailableException的解决办法

1. 异常

今天学习了Elasticsearch , 用spring boot 连接elasticseaerch测试建立索引，测试报错
NoNodeAvailableException 错误。下面项目文件
yml 配置

spring:
  data:
    elasticsearch:
      cluster-name: elasticsearch
      cluster-nodes: 192.168.100.206:9300

测试类代码

@SpringBootTest
@RunWith(SpringRunner.class)
public class ElasticsearchTest {

    @Autowired
    private ElasticsearchTemplate elasticsearchTemplate;

    @Test
    public void testIndex(){
        this.elasticsearchTemplate.createIndex(Item.class);
        this.elasticsearchTemplate.putMapping(Item.class);
    }
}

Item类

/**
 1. @author : 风笛叶
 */
 @Document(indexName = "item", type = "docs", shards = 1, replicas = 0)
public class Item {
    @Id
    Long id;
    //标题
    @Field(type = FieldType.Text, analyzer = "ik_max_word")
    String title;
    // 分类
    @Field(type = FieldType.Keyword)
    String category;
    // 品牌,默认会索引
    @Field(type = FieldType.Keyword)
    String brand;
    // 价格
    @Field(type = FieldType.Double)
    Double price;
    // 图片地址
    @Field(type = FieldType.Keyword, index = false)
    String images;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public String getBrand() {
        return brand;
    }

    public void setBrand(String brand) {
        this.brand = brand;
    }

    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    public String getImages() {
        return images;
    }

    public void setImages(String images) {
        this.images = images;
    }
}

2. 解决方案

1. 网上说是端口问题，9200是Http访问路口，9300是java连接ES的端口，我的配置是原来就是9300。
2. cluster-name属性，要跟9200端口http://IP:9200查出来一样（亲测有效）(

{
 "name": "DVzJ4Z0",
 "cluster_name": "docker-cluster",
 "cluster_uuid": "6mc2IbIMT-Kn_neqr8CmKA",
 "version": {
   "number": "6.4.0",
   "build_flavor": "default",
   "build_type": "tar",
   "build_hash": "595516e",
   "build_date": "2018-08-17T23:18:47.308994Z",
   "build_snapshot": false,
   "lucene_version": "7.4.0",
   "minimum_wire_compatibility_version": "5.6.0",
   "minimum_index_compatibility_version": "5.0.0"
 },
 "tagline": "You Know, for Search"
}

因为我是用docker 搭建的es ,cluster_name是docker_cluster;
而docker跟一般搭建的es的cluster_name是elasticsearch。
把yml 改一下 就可以

spring:
  data:
    elasticsearch:
      cluster-name: docker-cluster #需要与9200查出来的cluster-name一样
      cluster-nodes: 192.168.100.206:9300

运行结果