弹性搜索 - 搜索字符串中有空格和特殊字符使用C＃ [英] Elastic Search-Search string having spaces and special characters in it using C#

问题描述

我在寻找ElasticSearch嵌套查询，它将在使用C＃的字符串中提供完全匹配的空格。

I am looking for ElasticSearch nest query which will provide exact match on string having spaces in it using C#.

例如 - 我想搜索一个词'XYZ公司解决方案'。我试过querystring查询，但它给我所有的记录，不管搜索结果。另外，我阅读的帖子，发现我们必须添加一些映射的字段。

for example - I want to search for a word like 'XYZ Company Solutions'. I tried querystring query but it gives me all the records irrespective of search result. Also i read on the post and found that we have to add some mappings for the field. I tried 'Not_Analyzed' analyzer on the field but still it does not worked.

这里是我的代码C＃

var indexDefinition = new RootObjectMapping
{
  Properties = new Dictionary<PropertyNameMarker, IElasticType>(),
  Name = elastic_newindexname
};
var notAnalyzedField = new StringMapping
{
  Index = FieldIndexOption.NotAnalyzed
};
indexDefinition.Properties.Add("Name", notAnalyzedField);
objElasticClient.DeleteIndex(d => d.Index(elastic_newindexname));
var reindex = objElasticClient.Reindex<dynamic>(r => r.FromIndex(elastic_oldindexname).ToIndex(elastic_newindexname).Query(q => q.MatchAll()).Scroll("10s").CreateIndex(i => i.AddMapping<dynamic>(m => m.InitializeUsing(indexDefinition))));
ReindexObserver<dynamic> o = new ReindexObserver<dynamic>(onError: e => { });
reindex.Subscribe(o);**

**ISearchResponse<dynamic> ivals = objElasticClient.Search<dynamic>(s => s.Index(elastic_newindexname).AllTypes().Query(q => q.Term("Name","XYZ Company Solutions")));** //this gives 0 records

**ISearchResponse<dynamic> ivals1 = objElasticClient.Search<dynamic>(s => s.Index(elastic_newindexname).AllTypes().Query(q => q.Term(u => u.OnField("Name").Value("XYZ Company Solutions"))));** //this gives 0 records

**ISearchResponse<dynamic> ivals = objElasticClient.Search<dynamic>(s => s.Index(elastic_newindexname).AllTypes().Query(@"Name = 'XYZ Company Solutions'"));** //this gives all records having fields value starting with "XYZ"

如果任何人在C＃中有完整的示例或步骤， ？

If anyone have complete example or steps in C# then can you please share with me?

推荐答案

请参考以下代码，我认为这将满足您的要求。
这里我创建和映射索引与动态模板，然后做XDCR。
现在所有字符串字段将不会被分析。

Please refer the below code ,I think this will meet your requirements. Here I have created and mapped index with dynamic template and then did the XDCR. Now all string fields will be not_analysed.

 IIndicesOperationResponse result = null;
                    if (!objElasticClient.IndexExists(elastic_indexname).Exists)
                    {
                        result = objElasticClient.CreateIndex(elastic_indexname, c => c.AddMapping<dynamic>(m => m.Type("_default_").DynamicTemplates(t => t
                                                    .Add(f => f.Name("string_fields").Match("*").MatchMappingType("string").Mapping(ma => ma
                                                        .String(s => s.Index(FieldIndexOption.NotAnalyzed)))))));
                }

感谢

Mukesh Raghuwanshi

Mukesh Raghuwanshi

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