新增指定索引的文档数据的代码如下:
            
            
              java
              
              
            
          
          package com.atgulgu.es.test;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.HttpHost;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Request;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.client.indices.GetIndexResponse;
import org.elasticsearch.xcontent.XContentType;
/**
 * ClassName: ESTest_Client
 * Package: com.atgulgu.es.test
 *
 * @Author 杨小燕
 * @Create 2024/10/7 0007 23:37
 * @Version 1.0
 */
public class ESTest_Doc_Insert {
    public static void main(String[] args)  throws  Exception {
      //创建ES客户单
        RestHighLevelClient esClient =  new RestHighLevelClient(
                RestClient.builder(new HttpHost("192.168.1.108",9200,"http"))
        );
     //插入数据
        IndexRequest  request = new IndexRequest();
        request.index("user").id("1001");
        User  user = new User();
        user.setName("zhangsan");
        user.setAge(30);
        user.setSex("男");
        //向ES插入数据,必须将数据转换为JSOn格式
        ObjectMapper  mapper = new ObjectMapper();
        String userjson = mapper.writeValueAsString(user);
        request.source(userjson, XContentType.JSON);
        IndexResponse response = esClient.index(request, RequestOptions.DEFAULT);
        System.out.println(response.getResult());
        //关闭ES客户端
        esClient.close();
    }
}执行成功会提示created

修改数据的代码如下:
            
            
              java
              
              
            
          
          package com.atgulgu.es.test;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.HttpHost;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.xcontent.XContentType;
/**
 * ClassName: ESTest_Client
 * Package: com.atgulgu.es.test
 *
 * @Author 杨小燕
 * @Create 2024/10/7 0007 23:37
 * @Version 1.0
 */
public class ESTest_Doc_update {
    public static void main(String[] args)  throws  Exception {
      //创建ES客户单
        RestHighLevelClient esClient =  new RestHighLevelClient(
                RestClient.builder(new HttpHost("192.168.1.108",9200,"http"))
        );
     //修改数据
        UpdateRequest request = new UpdateRequest();
        request.index("user").id("1001");
         request.doc(XContentType.JSON,"sex","女");
        UpdateResponse response = esClient.update(request, RequestOptions.DEFAULT);
        System.out.println(response.getResult());
        //关闭ES客户端
        esClient.close();
    }
}
查询ES中具体索引和ID的数据代码如下:
            
            
              java
              
              
            
          
          package com.atgulgu.es.test;
import org.apache.http.HttpHost;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.xcontent.XContentType;
/**
 * ClassName: ESTest_Client
 * Package: com.atgulgu.es.test
 *
 * @Author 杨小燕
 * @Create 2024/10/7 0007 23:37
 * @Version 1.0
 */
public class ESTest_Doc_Get {
    public static void main(String[] args)  throws  Exception {
      //创建ES客户单
        RestHighLevelClient esClient =  new RestHighLevelClient(
                RestClient.builder(new HttpHost("192.168.1.108",9200,"http"))
        );
     //查询数据
        GetRequest request = new GetRequest();
        request.index("user").id("1001");
        GetResponse response = esClient.get(request, RequestOptions.DEFAULT);
        System.out.println(response.getSourceAsString());
        //关闭ES客户端
        esClient.close();
    }
}执行结果如下:
 删除指定文档的代码如下
删除指定文档的代码如下
            
            
              java
              
              
            
          
          package com.atgulgu.es.test;
import org.apache.http.HttpHost;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
/**
 * ClassName: ESTest_Client
 * Package: com.atgulgu.es.test
 *
 * @Author 杨小燕
 * @Create 2024/10/7 0007 23:37
 * @Version 1.0
 */
public class ESTest_Doc_Delete {
    public static void main(String[] args)  throws  Exception {
      //创建ES客户单
        RestHighLevelClient esClient =  new RestHighLevelClient(
                RestClient.builder(new HttpHost("192.168.1.108",9200,"http"))
        );
        //删除文档数据
        DeleteRequest request = new DeleteRequest();
        request.index("user").id("1001");
        DeleteResponse response = esClient.delete(request, RequestOptions.DEFAULT);
        System.out.println(response.toString());
        //关闭ES客户端
        esClient.close();
    }
}执行显示结果如下
