1.去 http://lucenenet.apache.org/ 下载lunece.net 文件
2.在项目添加引用Lucene.Net.dll
class Program{static void Main(string[] args){//索引Directory direcotry = FSDirectory.GetDirectory("LuceneIndex");Analyzer analyzer = new StandardAnalyzer();IndexWriter writer = new IndexWriter(direcotry,analyzer);IndexReader red = IndexReader.Open(direcotry);int totDocs = red.MaxDoc();red.Close();//添加文档到索引string text = string.Empty;Console.WriteLine("输入文本你想要添加到索引:");Console.Write(">");int txts = totDocs;int j = 0;while((text=Console.ReadLine())!=string.Empty){AddTextToIndex(txts++,text,writer);j++;Console.Write(">");}writer.Optimize();writer.Flush();writer.Close();Console.WriteLine(j + " lines added, " + txts + " documents total");//搜索IndexSearcher searcher = new IndexSearcher(direcotry);QueryParser parser = new QueryParser("postBody", analyzer);Console.WriteLine("输入搜索的文本:");Console.Write(">");while ((text = Console.ReadLine()) != String.Empty){Search(text, searcher, parser);Console.Write(">");}//关闭资源searcher.Close();direcotry.Close();}//搜索private static void Search(string text,IndexSearcher searcher,QueryParser parser){ //条件Query query = parser.Parse(text);//搜索Hits hits = searcher.Search(query);//显示结果Console.WriteLine("搜索 '" + text + "'");int results = hits.Length();Console.WriteLine("发现 {0} 结果", results);for (int i = 0; i < results; i++){Document doc = hits.Doc(i);float score = hits.Score(i);Console.WriteLine("--结果 num {0}, 耗时 {1}", i + 1, score);Console.WriteLine("--ID: {0}", doc.Get("id"));Console.WriteLine("--Text found: {0}" + Environment.NewLine, doc.Get("postBody"));}}//添加文档到索引中private static void AddTextToIndex(int txts,string text,IndexWriter writer){Document doc = new Document();doc.Add(new Field("id",text.ToString(),Field.Store.YES,Field.Index.UN_TOKENIZED));doc.Add(new Field("postBody",text,Field.Store.YES,Field.Index.TOKENIZED));writer.AddDocument(doc);}}
