Lucene.net字段包含多个值以及要搜索的人员

任何人都知道搜索包含多个值的字段的最佳方法是什么？

string tagString = ""; foreach(var tag in tags) { tagString = tagString += ":" + tag; } doc.Field(new Field("Tags", tagString, Field.Store.YES, Field.Index.Analyzed); 

假设我想搜索所有标记为“csharp”的文档，谁能最好地实现这个？

Answer 1

我认为您正在寻找的是为单个Document添加多个具有相同名称的字段。

您所做的是创建一个Document并向其添加多个标记Field 。

 RAMDirectory ramDir = new RAMDirectory(); IndexWriter writer = new IndexWriter(ramDir, new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29)); Document doc = new Document(); Field tags = null; string [] articleTags = new string[] {"C#", "WPF", "Lucene" }; foreach (string tag in articleTags) { // adds a field with same name multiple times to the same document tags = new Field("tags", tag, Field.Store.YES, Field.Index.NOT_ANALYZED); doc.Add(tags); } writer.AddDocument(doc); writer.Commit(); // search IndexReader reader = writer.GetReader(); IndexSearcher searcher = new IndexSearcher(reader); // use an analyzer that treats the tags field as a Keyword (Not Analyzed) PerFieldAnalyzerWrapper aw = new PerFieldAnalyzerWrapper(new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29)); aw.AddAnalyzer("tags", new KeywordAnalyzer()); QueryParser qp = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "tags", aw); Query q = qp.Parse("+WPF +Lucene"); TopDocs docs = searcher.Search(q, null, 100); Console.WriteLine(docs.totalHits); // 1 hit q = qp.Parse("+WCF +Lucene"); docs = searcher.Search(q, null, 100); Console.WriteLine(docs.totalHits); // 0 hit