九、关于索引的API操作

关于java API的学习都会在测试类中进行完成。

1.创建索引

@SpringBootTest
class EsApiApplicationTests {
    @Autowired
    private RestHighLevelClient restHighLevelClient;
    //索引的创建 request
    @Test
    void testCreateIndex() throws IOException {
        //1.创建索引请求
        CreateIndexRequest request = new CreateIndexRequest("kuan_index");
        //2.执行请求
        CreateIndexResponse createIndexResponse =
                restHighLevelClient.indices().create(request, RequestOptions.DEFAULT);
        System.out.println(createIndexResponse);
    }
}

2.判断索引是否存在

//判断索引是否存在
@Test
void testExistIndex()throws IOException{
    //1.创建索引请求
    GetIndexRequest request = new GetIndexRequest("kuan_index");
    //2.执行请求
    boolean exists  = restHighLevelClient.indices().exists(request, RequestOptions.DEFAULT);
    System.out.println(exists);
}

3.删除索引

//删除索引
@Test
void testDeleteIndex() throws IOException {
    DeleteIndexRequest request = new DeleteIndexRequest("kuan_index");
    //删除
    AcknowledgedResponse delete = restHighLevelClient.indices().delete(request, RequestOptions.DEFAULT);
    System.out.println(delete);
}