ElasticSearch-TransportClient客户端操作Es（五）

  org.elasticsearch
  elasticsearch
  6.8.0


  org.elasticsearch.client
  transport
  6.8.0


  org.elasticsearch.plugin
  transport-netty4-client
  6.8.0

1. 创建客户端操作对象

//创建ES客户端操作对象
@Test
public void init() throws UnknownHostException {
  PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(Settings.EMPTY);
  preBuiltTransportClient.addTransportAddress(new TransportAddress(
    InetAddress.getByName("192.168.202.200"),9300));
}

2. 创建索引

//创建索引
@Test
public void createIndex() throws UnknownHostException, ExecutionException, InterruptedException {
  PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(Settings.EMPTY);
  preBuiltTransportClient.addTransportAddress(new TransportAddress(
    InetAddress.getByName("192.168.202.200"),9300));
  //定义索引请求
  CreateIndexRequest ems = new CreateIndexRequest("ems");
  //执行索引创建
  CreateIndexResponse createIndexResponse = preBuiltTransportClient.admin().indices().create(ems).get();
  System.out.println(createIndexResponse.isAcknowledged());
}

3. 删除索引

//删除索引
@Test
public void deleteIndex() throws UnknownHostException, ExecutionException, InterruptedException {
  PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(Settings.EMPTY);
  preBuiltTransportClient.addTransportAddress(new TransportAddress(
    InetAddress.getByName("192.168.202.200"),9300));
  //定义索引请求
  DeleteIndexRequest ems = new DeleteIndexRequest("ems");
  //执行索引删除
  AcknowledgedResponse acknowledgedResponse = preBuiltTransportClient.admin().indices().delete(ems).get();
  System.out.println(acknowledgedResponse.isAcknowledged());
}

4. 创建索引和类型

//创建索引类型和映射
@Test
public void init() throws UnknownHostException, ExecutionException, InterruptedException {
  PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(Settings.EMPTY);
  preBuiltTransportClient.addTransportAddress(new TransportAddress(
    InetAddress.getByName("192.168.202.200"),9300));
  //创建索引
  CreateIndexRequest ems = new CreateIndexRequest("ems");
  //定义json格式映射
  String json = "{"properties":{"name":{"type":"text","analyzer":"ik_max_word"},"age":{"type":"integer"},"sex":{"type":"keyword"},"content":{"type":"text","analyzer":"ik_max_word"}}}";
  //设置类型和mapping
  ems.mapping("emp",json, XContentType.JSON);
  //执行创建
  CreateIndexResponse createIndexResponse = preBuiltTransportClient.admin().indices().create(ems).get();
  System.out.println(createIndexResponse.isAcknowledged());
}

1. 指定id索引记录

//索引一条文档 指定id
@Test
public void createIndexOptionId() throws JsonProcessingException {
  Emp emp = new Emp("小陈", 23, "男", "这是一个单纯的少年,单纯的我!");
  String s = JSONObject.toJSONString(emp);
  IndexResponse indexResponse = transportClient.prepareIndex("ems", "emp", "1").setSource(s, XContentType.JSON).get();
  System.out.println(indexResponse.status());
}