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Dotnetydd.Tools.LuceneNet 1.0.0

dotnet add package Dotnetydd.Tools.LuceneNet --version 1.0.0
 
 
NuGet\Install-Package Dotnetydd.Tools.LuceneNet -Version 1.0.0
 
 
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Dotnetydd.Tools.LuceneNet" Version="1.0.0" />
 
 
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Dotnetydd.Tools.LuceneNet" Version="1.0.0" />
 
Directory.Packages.props
<PackageReference Include="Dotnetydd.Tools.LuceneNet" />
 
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Dotnetydd.Tools.LuceneNet --version 1.0.0
 
 
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Dotnetydd.Tools.LuceneNet, 1.0.0"
 
 
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Dotnetydd.Tools.LuceneNet@1.0.0
 
 
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Dotnetydd.Tools.LuceneNet&version=1.0.0
 
Install as a Cake Addin
#tool nuget:?package=Dotnetydd.Tools.LuceneNet&version=1.0.0
 
Install as a Cake Tool
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

基于lucene.net的全文检索工具

基于lucene.net 实现的一款全文检索工具,支持结果短语查询,中英文分词查询,关键字查询,也可以自行安装符合Lucene.Net的分析器以及分词工具。本项目最低支持net framework4.5.1 目前大多数项目中可以引入。索引数据的操作需要自行实现,比如使用ef/efcore的change tracking 、savechange拦截器、领域事件等方式实现索引的操作与项目中数据的同步。

注意:该工具仅适用于简单搜索场景,不适用于分布式应用以及复杂的场景,专业项目请考虑使用大型的搜索引擎中间件做支撑,如:ElasticSearch,或考虑数据库全文检索,或数据库正则。 注意:对于复杂字段的索引,目前只是进行序列化方式,需要自行实现 IFieldSerializeProvider 接口以实现字段的序列化,并且字段的特性LuceneIndexedIsSerializeStore 要设置成true 注意:请数据自定标识字段,并且字段的特性LuceneIndexedIsIdentityField 要设置成true 注意:需要指定版本的地方请使用LuceneSearchEngine.LuceneVersion

使用方式

  1. net framework
// net framework 中直接new就可以。或者使用依赖注入框架。
using var searchEngine = new LuceneSearchEngine(new SmartChineseAnalyzer(LuceneSearchEngine.LuceneVersion),new LuceneSearchEngineOptions
{
 IndexDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "luceneIndexs"),
},new NewtonsoftMessageSerializeProvider());



  1. netcore/net5/net6中使用
builder.Services.Configure<LuceneSearchEngineOptions>(o =>
{
 o.IndexDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "luceneIndexs");
});
// SmartChineseAnalyzer 的停用词可以自定义
builder.Services.AddScoped<Analyzer>(s => new SmartChineseAnalyzer(LuceneSearchEngine.LuceneVersion));
builder.Services.AddScoped<LuceneSearchEngine>();

// other service
public class Demo
{
 private readonly LuceneSearchEngine _luceneSearchEngine;
	public Demo(LuceneSearchEngine luceneSearchEngine)
	{
		_luceneSearchEngine = luceneSearchEngine;
	}
}

自定义停止词

var defaultStop= CharArraySet.UnmodifiableSet(WordlistLoader.GetWordSet(IOUtils.GetDecodingReader(typeof(SmartChineseAnalyzer), "stopwords.txt", Encoding.UTF8), "//", LuceneSearchEngine.LuceneVersion));
var stopwords = new CharArraySet(LuceneSearchEngine.LuceneVersion, new string[] {"的", "sb"}, true);

从数据集合创建索引

// demo model
public class Person
{
 [LuceneIndexed("Id", true)]
 public long Id { get; set; }

 [LuceneIndexed("Name", false)]
 public string Name { get; set; }

 [LuceneIndexed("Remarks", false, IsTextField = true, IsHighLight = true, HightLightMaxNumber = 1)]
 public string Remarks { get; set; }
}

var dataList=new List<Person>();

var successed = _luceneSearchEngine.CreateIndex(dataList);

搜索

  • 构建query
  1. 直接构建:
var query = new TermQuery(new Term("Remarks", "搜索"));

var query = new PhraseQuery(new Term("Remarks", "搜索"));

var query = new BooleanQuery()
queryd.Add(new TermQuery(new Term(nameof(Person.Remarks), keyWords)), Occur.MUST);
  1. 通过QueryParser和MultiFieldQueryParser构建
 var parser = new QueryParser(LuceneVersion.LUCENE_48, nameof(Person.Remarks), _luceneSearchEngine.Analyzer);
 var query = parser.Parse(keyWords);

 var ab = new MultiFieldQueryParser(LuceneSearchEngine.LuceneVersion, new[] { nameof(Person.Name), nameof(Person.Remarks) }, _luceneSearchEngine.Analyzer);
 var query = ab.Parse(keyWords);
  1. 通过QueryBuilder 构建 [不支持多条件]
var builder = new QueryBuilder();
 var query = builder.BuildQuery(keyWords);
  • 执行查询
 var searchResult = _luceneSearchEngine.Search<Person>(new SearchModel(query, 100)
 {
 OrderBy = new SortField[] { SortField.FIELD_SCORE }, // 排序信息
 Skip = 0, // 分页skip
 Take = 20, // 分页 take
 Score = 0, // 权重 0开始越大标识越精确
 OnlyTyped = true, // 是否只在指定的泛型类型索引文档中搜索,false标识不区分泛型type约束全部查询
 HighlightTag = ($"<a style='color:{highlight}'>", "</a>") // 高亮标记
 });
Product Versions Compatible and additional computed target framework versions.
.NET net5.0 net5.0 is compatible.  net5.0-windows net5.0-windows was computed.  net6.0 net6.0 is compatible.  net6.0-android net6.0-android was computed.  net6.0-ios net6.0-ios was computed.  net6.0-maccatalyst net6.0-maccatalyst was computed.  net6.0-macos net6.0-macos was computed.  net6.0-tvos net6.0-tvos was computed.  net6.0-windows net6.0-windows was computed.  net7.0 net7.0 is compatible.  net7.0-android net7.0-android was computed.  net7.0-ios net7.0-ios was computed.  net7.0-maccatalyst net7.0-maccatalyst was computed.  net7.0-macos net7.0-macos was computed.  net7.0-tvos net7.0-tvos was computed.  net7.0-windows net7.0-windows was computed.  net8.0 net8.0 is compatible.  net8.0-android net8.0-android was computed.  net8.0-browser net8.0-browser was computed.  net8.0-ios net8.0-ios was computed.  net8.0-maccatalyst net8.0-maccatalyst was computed.  net8.0-macos net8.0-macos was computed.  net8.0-tvos net8.0-tvos was computed.  net8.0-windows net8.0-windows was computed.  net9.0 net9.0 was computed.  net9.0-android net9.0-android was computed.  net9.0-browser net9.0-browser was computed.  net9.0-ios net9.0-ios was computed.  net9.0-maccatalyst net9.0-maccatalyst was computed.  net9.0-macos net9.0-macos was computed.  net9.0-tvos net9.0-tvos was computed.  net9.0-windows net9.0-windows was computed.  net10.0 net10.0 was computed.  net10.0-android net10.0-android was computed.  net10.0-browser net10.0-browser was computed.  net10.0-ios net10.0-ios was computed.  net10.0-maccatalyst net10.0-maccatalyst was computed.  net10.0-macos net10.0-macos was computed.  net10.0-tvos net10.0-tvos was computed.  net10.0-windows net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
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Version Downloads Last Updated
1.0.0 381 5/13/2024