Java RestClient创建索引报错：java.net.SocketTimeoutException: 30,000 milliseconds timeo

发生背景

编写测试类准备创建索引库

import static cn.itcast.hotel.constants.HotelConstants.MAPPING_TEMPLATE;

@SpringBootTest
class HotelAdminApplicationTests {

    private RestHighLevelClient client;

    @BeforeEach
    void setUp(){
        this.client = new RestHighLevelClient(RestClient.builder(
                HttpHost.create("http://127.0.0.1:9200")
        ));
    }

    @AfterEach
    void tearDown() throws IOException {
        this.client.close();
    }

    @Test
    void contextLoads() {
        System.out.println(client);
    }

    @Test
    void createHotelIndex() throws IOException {
        // 创建Request对象
        CreateIndexRequest request = new CreateIndexRequest("hotel");
        // 准备请求的参数：DSL
        request.source(MAPPING_TEMPLATE, XContentType.JSON);
        // 发送请求
        client.indices().create(request, RequestOptions.DEFAULT);
    }

}

解决方案

改索引库名字：hotel->hotel_index