.net core Elasticsearch.Net基本操作

1.加入依赖

Elasticsearch.model
Elasticsearch.Net

2.实体类

namespace Elasticsearch.model
{
    public class User
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
    }
}

3.编写工具类

using Elasticsearch.model;
using Elasticsearch.Net;
using Nest;

namespace Elasticsearch.config
{
    public class ElasticsearchHelper
    {
        private static ElasticClient? _client = null;

        public static ElasticClient GetClient() {

            if (_client == null) {
                var nodes = new Uri[]
            {
                new Uri("http://xxx:9200")
            };

                var pool = new StaticConnectionPool(nodes);
                var settings = new ConnectionSettings(pool);
                _client = new ElasticClient(settings);
            }
            
            return _client;
        }

        public static object Search() {

            var response = GetClient().Search(s => s
                .Index("myuserindex") 
                .From(0)
                .Size(10)
                .Query(q => 
                    q.Term(t => t.Name, "kimchy") 
                    || q.Match(mq => mq.Field(f => f.Name).Query("tom"))
                )
            );

            return response.documents.ToList();
        }

        public static object Insert() {

            var user = new User
            {
                Id = 2,
                Name = "tom",
                Age = 12
            };

            var response = GetClient().Index(user, idx => idx.Index("myuserindex"));
            return response;
        }
    }
}

4.测试

using Elasticsearch.config;
using Microsoft.AspNetCore.Mvc;

namespace Elasticsearch.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class MyController : Controllerbase
    {
        [HttpGet(Name = "my")]
        public object Get()
        {
            ElasticsearchHelper.Insert();
            return ElasticsearchHelper.Search();
        }
    }
}