C# 使用nest elastic根据术语中的字数进行搜索
我有一个电子商务网站。用户可以搜索产品。每种产品都有“名称”、“品牌”、“类别”列表。 如果用户搜索“Tommy t恤men”,则只应返回mens Tommy t恤作为结果,不应返回带有单个单词Tommy或t恤的结果。如果用户搜索“Tommy”,则应返回包含单词Tommy的所有结果。如果用户搜索“Tommy men”,则应仅返回Tommy men产品,而不返回单个匹配词Tommy或单个匹配词men 我的代码如下所示:C# 使用nest elastic根据术语中的字数进行搜索,c#,
elasticsearch,nest,C#,
elasticsearch,Nest,我有一个电子商务网站。用户可以搜索产品。每种产品都有“名称”、“品牌”、“类别”列表。 如果用户搜索“Tommy t恤men”,则只应返回mens Tommy t恤作为结果,不应返回带有单个单词Tommy或t恤的结果。如果用户搜索“Tommy”,则应返回包含单词Tommy的所有结果。如果用户搜索“Tommy men”,则应仅返回Tommy men产品,而不返回单个匹配词Tommy或单个匹配词men 我的代码如下所示: public ISearchResponse<Models.Produc
public ISearchResponse<Models.Product> Search(string term, int minMatch)
{
var response = client.Search<Models.Product>(search => search
.Query(q => q.Bool(b => b.Should(
s => s.Match(m => m.Query(term).Field(f => f.ProductName).Boost(5).Fuzziness(Fuzziness.EditDistance(0))),
s => s.Match(m => m.Query(term).Field(f => f.Brand).Boost(15).Fuzziness(Fuzziness.EditDistance(0))),
s => s.Match(m => m.Query(term).Field(f => f.Category).Boost(10).Fuzziness(Fuzziness.EditDistance(0)))
).MinimumShouldMatch(minMatch))));
return response;
}
public ISearchResponse<Models.Product> Read(string term)
{
var fixedInput = Regex.Split(term, @"[^\p{L}]*\p{Z}[^\p{L}]*");
int minMatch;
if (fixedInput.Count() > 1) minMatch = 2;
else minMatch = 1;
var results = Search(term, minMatch);
if (!results.Documents.Any() && minMatch.Equals(2))
{
results = Search(term, 1);
}
return results;
}
public ISearchResponse搜索(字符串项,int-minMatch)
{
var response=client.Search(Search=>Search
.Query(q=>q.Bool(b=>b.Should(
s=>s.Match(m=>m.Query(term).Field(f=>f.ProductName).Boost(5).Fuzziness(Fuzziness.EditDistance(0)),
s=>s.Match(m=>m.Query(term).Field(f=>f.Brand).Boost(15).fuzzness(fuzzness.EditDistance(0)),
s=>s.Match(m=>m.Query(term).Field(f=>f.Category).Boost(10).Fuzziness(Fuzziness.EditDistance(0)))
).MinimumShouldMatch(minMatch));
返回响应;
}
公共ISearchResponse读取(字符串术语)
{
var fixedInput=Regex.Split(术语“[^\p{L}]*\p{Z}[^\p{L}]*”;
int-minMatch;
如果(fixedInput.Count()>1)minMatch=2;
else minMatch=1;
var结果=搜索(术语,最小匹配);
如果(!results.Documents.Any()&&minMatch.Equals(2))
{
结果=搜索(术语1);
}
返回结果;
}
如果我在搜索“Tommy men”,第一个结果是“Tommey men”,但其他结果是“Diesel men”,“Boss men”,如果搜索词有多个词,如何用一个词匹配筛选出结果。你是说“Tommy”!=下面句子中的“汤米”
单个单词没有结果
汤米或t恤应该退。如果用户正在搜索“Tommy”
然后应该返回所有带有单词tommy的结果
对于其余的示例,可以使用with type
示例应用程序:
public class Document
{
public int Id { get; set; }
public string Name { get; set; }
public string Brand { get; set; }
public string Category { get; set; }
public override string ToString() => $"Id: {Id} Name: {Name} Brand: {Brand} Category: {Category}";
}
static async Task Main(string[] args)
{
var pool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
var connectionSettings = new ConnectionSettings(pool);
connectionSettings.DefaultIndex("documents");
var client = new ElasticClient(connectionSettings);
var deleteIndexResponse = await client.Indices.DeleteAsync("documents");
var createIndexResponse = await client.Indices.CreateAsync("documents", d => d
.Map(m => m.AutoMap<Document>()));
var indexDocument = await client
.IndexDocumentAsync(new Document {Id = 1, Brand = "Tommy", Category = "men"});
var indexDocument2 = await client
.IndexDocumentAsync(new Document {Id = 2, Brand = "Diesel", Category = "men"});
var indexDocument3 = await client
.IndexDocumentAsync(new Document {Id = 3, Brand = "Boss", Category = "men"});
var refreshAsync = client.Indices.RefreshAsync();
var query = "Tommy";
var searchResponse = await Search(client, query);
PrintResults(query, searchResponse);
query = "Tommy men";
searchResponse = await Search(client, query);
PrintResults(query, searchResponse);
query = "men";
searchResponse = await Search(client, query);
PrintResults(query, searchResponse);
}
private static async Task<ISearchResponse<Document>> Search(ElasticClient client, string query)
{
var searchResponse = await client.SearchAsync<Document>(s => s.Query(q => q
.MultiMatch(mm => mm
.Fields(f => f.Fields(ff => ff.Brand, ff => ff.Category, ff => ff.Name))
.Query(query)
.Type(TextQueryType.CrossFields)
.MinimumShouldMatch("100%"))));
return searchResponse;
}
private static void PrintResults(string query, ISearchResponse<Document> searchResponse)
{
Console.WriteLine($"query: {query}");
Console.WriteLine(searchResponse.Total);
Console.WriteLine($"results: ");
searchResponse.Documents.ToList().ForEach(Console.WriteLine);
Console.WriteLine();
}
}
希望有帮助
query: Tommy
found: 1
Id: 1 Name: Brand: Tommy Category: men
query: Tommy men
found: 1
Id: 1 Name: Brand: Tommy Category: men
query: men
found: 3
Id: 1 Name: Brand: Tommy Category: men
Id: 2 Name: Brand: Diesel Category: men
Id: 3 Name: Brand: Boss Category: men