弹性搜索嵌套索引查询总是返回false

Question

 var local = new Uri("http://localhost:9200");
            var settings = new ConnectionSettings(local, null);
            var elastic = new ElasticClient(settings);

            var res = elastic.CreateIndex(ci => ci
                               .Index("my_first_index_final2")
                               .AddMapping<BlogPost>(m => m.MapFromAttributes()));

            Console.WriteLine(res.RequestInformation.Success);

            var blogPost = new BlogPost
            {
                Id = Guid.NewGuid(),
                Title = "First blog post",
                Body = "This is very long blog post!"
            };

            var firstId = blogPost.Id;

            var result = elastic.Index(blogPost, p => p
               .Index("my_first_index_final2")
               .Id(blogPost.Id.ToString())
               .Refresh());

            Console.WriteLine(result.RequestInformation.Success);

博文class:

[ElasticType(IdProperty = "Id", Name = "blog_post")]
public class BlogPost
{
    [ElasticProperty(Name = "_id", Index = FieldIndexOption.NotAnalyzed, Type = FieldType.String)]
    public Guid? Id { get; set; }

    [ElasticProperty(Name = "title", Index = FieldIndexOption.Analyzed, Type = FieldType.String)]
    public string Title { get; set; }

    [ElasticProperty(Name = "body", Index = FieldIndexOption.Analyzed, Type = FieldType.String)]
    public string Body { get; set; }

    public override string ToString()
    {
        return string.Format("Id: '{0}', Title: '{1}', Body: '{2}'", Id, Title, Body);
    }
}

这是我的代码。每次 returns：真的假

意思是，它创建索引但无法将文档插入索引。我不明白原因。

此外，每次我运行这个演示控制台应用程序时，我都必须重命名我的索引名称，因为我认为我们不能插入具有相同名称的索引。我怎样才能避免这样做？

我正在学习本教程： https://www.devbridge.com/articles/getting-started-with-elastic-using-net-nest-library-part-two/

任何其他学习nest和elasticsearch的资源，欢迎提出。

Answer 1

我猜你正在使用 Elasticsearch 2.x。您的代码不会在 Elasticsearch 1.x 中中断。问题是，您正试图在文档中添加字段 _id。它是元数据字段之一，Elasticsearch 2.x 禁止您在文档中对其进行索引。要使您的代码正常工作，只需将 Id 字段的名称从 _id 更改为其他名称，例如 id.

弹性搜索嵌套索引查询总是返回false

Elastic search Nest index query always returning false

elasticsearch

nest