elasticsearch - 使用俄语文本分析器搜索不起作用

Question

我有一个非常简单的ElasticSearch模型:

[ElasticsearchType(RelationName = "example")]
public class ElasticModel
{
    [Text(Name = "description", Analyzer = "Russian", Index = true, SearchAnalyzer = "Russian")]
    public string Description { get; set; }
}

然后我在下一行取消索引:

protected ICreateIndexRequest ConfigureIndex(CreateIndexDescriptor indexDescriptor,
            Func<IndexSettingsDescriptor, IPromise<IIndexSettings>> selectorOfIndexSettings)
        {
            ICreateIndexRequest returnValue;

            returnValue = indexDescriptor.Settings(selectorOfIndexSettings);
            return returnValue;
        }

    await _client.Indices.CreateAsync(completeIndexName, indexDescriptor => ConfigureIndex(indexDescriptor, selector));

然后通过下一个值初始化我的模型，然后尝试搜索:

var document = new ElasticModel()
                        {
                            Description = "В Москве все выходные будут дожди"
                        };

                        var responseDoc = await await _client.IndexAsync(new IndexRequest<T>(document, completeIndexName))

var responseSearch = await _client.SearchAsync<ElasticModel>(s => s.Index(completeIndexName)
                            .Query(q => q.QueryString(c => c
                                                            .Query("выходной")
                            )));

但结果为空。
当我向Elasticsearch服务器发出下一个请求时:

POST {{ElasticSearchAddress}}/_analyze
{
  "analyzer": "russian",
  "text": "В Москве все выходные будут дожди"
}

我看到了预期的结果:

{
    "tokens": [
        {
            "token": "москв",
            "start_offset": 2,
            "end_offset": 8,
            "type": "<ALPHANUM>",
            "position": 1
        },
        {
            "token": "выходн",
            "start_offset": 13,
            "end_offset": 21,
            "type": "<ALPHANUM>",
            "position": 3
        },
        {
            "token": "будут",
            "start_offset": 22,
            "end_offset": 27,
            "type": "<ALPHANUM>",
            "position": 4
        },
        {
            "token": "дожд",
            "start_offset": 28,
            "end_offset": 33,
            "type": "<ALPHANUM>",
            "position": 5
        }
    ]
}

谁能解释我，为什么我从C#代码中搜索时不使用俄语分析器，并且不返回我预期的结果？
更新:
要求/ elastictest100 / _search
与 body :

{
  "query": {
    "multi_match" : {
      "query":    "выходные будут", 
      "fields": [ "description" ],
      "analyzer": "russian"
    }
  }
}

还给我:

{
    "took": 2,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 3,
            "relation": "eq"
        },
        "max_score": 0.13353139,
        "hits": [
            {
                "_index": "mediadev-elastictest100",
                "_type": "_doc",
                "_id": "G2FzRnMBhdWoY2X4fmQo",
                "_score": 0.13353139,
                "_source": {
                    "description": "В Москве все выходные будут дожди"
                }
            },
            {
                "_index": "mediadev-elastictest100",
                "_type": "_doc",
                "_id": "HGGLRnMBhdWoY2X4AGSV",
                "_score": 0.13353139,
                "_source": {
                    "description": "В Москве все выходные будут дожди"
                }
            },
            {
                "_index": "mediadev-elastictest100",
                "_type": "_doc",
                "_id": "HWGMRnMBhdWoY2X4tGSY",
                "_score": 0.13353139,
                "_source": {
                    "description": "В Москве все выходные будут дожди"
                }
            }
        ]
    }
}

与 body :

{
  "query": {
    "multi_match" : {
      "query":    "выходной будет", 
      "fields": [ "description" ],
      "analyzer": "russian"
    }
  }
}

还给我:

{
    "took": 1,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 0,
            "relation": "eq"
        },
        "max_score": null,
        "hits": []
    }
}

Answer 1

我对Nest代码不熟悉，但是可以给您一些提示来调试问题。

尝试打印最终搜索查询的JSON，以便您可以轻松地使用REST搜索端点进行测试，以比较是否生成正确的查询。

匹配查询使用的是与索引时间相同的分析器，但没有分析词条查询，这会导致此类问题，并且在最终出现搜索结果时，应将索引时间标记与搜索时间标记匹配。

最容易检查搜索JSON，并使用ES REST端点直接对您的索引进行命中以查看根本原因。