MVC5 框架 配置 盘古分词

public static readonly IndexManager instance;
???????//静态构造函数，CLR只执行一次
???????static IndexManager()
???????{
???????????instance = new IndexManager();
???????}
???????//私有构造函数，防止外界调用
???????private IndexManager() { }

???????/// <summary>
???????/// 定义 实体队列
???????/// </summary>
???????public Queue<ViewModelContent> queue = new Queue<ViewModelContent>();

???????public void DeleteQuene(int id)
???????{
???????????ViewModelContent viewmodelcontent = new ViewModelContent() {
???????????Id=id,LuceneTypeEnum=LuceneTypeEnum.Delete
???????????};
???????????queue.Enqueue(viewmodelcontent);
???????}

???????/// <summary>
???????/// 新增到数据库 成功后，需要将该记录新增到lucene.net中
???????/// </summary>
???????/// <param name="id"></param>
???????/// <param name="title"></param>
???????/// <param name="content"></param>
???????public void AddQueue(int id,string title,string content)
???????{
???????????ViewModelContent viewmodelcontent = new ViewModelContent()
???????????{
???????????????Id = id,
???????????????Title = title,
???????????????Content = content,
???????????????LuceneTypeEnum=LuceneTypeEnum.Add
???????????};
???????????queue.Enqueue(viewmodelcontent);
???????}
???????/// <summary>
???????/// 开启线程
???????/// </summary>
???????public void StartThread()
???????{
???????????Thread thread = new Thread(WriteCotent);
???????????thread.IsBackground = true;
???????????thread.Start();
???????}
???????/// <summary>
???????/// 循环扫描队列 ?
???????/// </summary>
???????private void WriteCotent()
???????{
???????????while (true)
???????????{
???????????????if (queue.Count > 0)
???????????????{
???????????????????//创建索引库
???????????????????CreateIndexContent();
???????????????}
???????????????else {
???????????????????Thread.Sleep(3000);
???????????????}
???????????}
???????}
???????/// <summary>
???????/// 创建索引库
???????/// </summary>
???????private void CreateIndexContent()
???????{
???????????string indexPath = ConfigurationManager.AppSettings["LuceneDir"];
???????????FSDirectory directory = FSDirectory.Open(new DirectoryInfo(indexPath), new NativeFSLockFactory());
???????????bool isUpdate = IndexReader.IndexExists(directory);
???????????if (isUpdate)
???????????{
???????????????if (IndexWriter.IsLocked(directory))
???????????????{
???????????????????IndexWriter.Unlock(directory);
???????????????}
???????????}
???????????IndexWriter writer = new IndexWriter(directory, new PanGuAnalyzer(), !isUpdate, Lucene.Net.Index.IndexWriter.MaxFieldLength.UNLIMITED);//向索引库中写索引。这时在这里加锁。
???????????//现在的数据 是从队列里面来 ?就是循环队列
???????????while (queue.Count > 0)
???????????{
???????????????//出队
???????????????ViewModelContent viewmodecontent = queue.Dequeue();
???????????????//根据ID 删除lucene.net的数据
???????????????writer.DeleteDocuments(new Term("Id", viewmodecontent.Id.ToString()));
???????????????if (viewmodecontent.LuceneTypeEnum == LuceneTypeEnum.Delete)
???????????????{
???????????????????continue;
???????????????}
???????????????//string txt = File.ReadAllText(@"C:\Users\Administrator\Desktop\lucene.net\" + i + ".txt", System.Text.Encoding.Default);//注意这个地方的编码
???????????????Document document = new Document();//表示一篇文档。
???????????????//Field.Store.YES:表示是否存储原值。只有当Field.Store.YES在后面才能用doc.Get("number")取出值来.Field.Index. NOT_ANALYZED:不进行分词保存
???????????????document.Add(new Field("Id", viewmodecontent.Id.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));

???????????????//Field.Index. ANALYZED:进行分词保存:也就是要进行全文的字段要设置分词 保存（因为要进行模糊查询）

???????????????//Lucene.Net.Documents.Field.TermVector.WITH_POSITIONS_OFFSETS:不仅保存分词还保存分词的距离。
???????????????document.Add(new Field("Title", viewmodecontent.Title, Field.Store.YES, Field.Index.ANALYZED, Lucene.Net.Documents.Field.TermVector.WITH_POSITIONS_OFFSETS));
???????????????document.Add(new Field("Content", viewmodecontent.Content, Field.Store.YES, Field.Index.ANALYZED, Lucene.Net.Documents.Field.TermVector.WITH_POSITIONS_OFFSETS));

???????????????writer.AddDocument(document);
???????????}
???????????writer.Close();//会自动解锁。
???????????directory.Close();//不要忘了Close，否则索引结果搜不到
???????}

???}
}

 ???????//分词搜索 ???????// GET: Search ???????public ActionResult SearchContent() ???????{ ???????????return View(); ???????} ???????public ActionResult SearchContentByKw() ???????{ ???????????//判断 ???????????if (!string.IsNullOrEmpty(Request["btnSearch"])) ???????????{ ???????????????//查询搜索内容 ???????????????List<ViewModelContent> list = ShowSearchContent(); ???????????????ViewData["list"] = list; ???????????????return View("SearchContent"); ???????????} ???????????else ???????????{ ???????????????//创建词库 ???????????????CreateSerachContent(); ???????????} ???????????return Content("ok"); ???????} ???????private List<ViewModelContent> ShowSearchContent() ???????{ ???????????string indexPath = ConfigurationManager.AppSettings["LuceneDir"]; ???????????List<string> list = Common.WebCommon.PanGuSplitWord(Request["txtSearch"]);//对用户输入的搜索条件进行拆分。 ???????????FSDirectory directory = FSDirectory.Open(new DirectoryInfo(indexPath), new NoLockFactory()); ???????????IndexReader reader = IndexReader.Open(directory, true); ???????????IndexSearcher searcher = new IndexSearcher(reader); ???????????//搜索条件 ???????????PhraseQuery query = new PhraseQuery(); ???????????foreach (string word in list)//先用空格，让用户去分词，空格分隔的就是词“计算机 ??专业” ???????????{ ???????????????query.Add(new Term("Content", word)); ???????????} ???????????//query.Add(new Term("body","语言"));--可以添加查询条件，两者是add关系.顺序没有关系. ???????????// query.Add(new Term("body", "大学生")); ???????????// query.Add(new Term("body", kw));//body中含有kw的文章 ???????????query.SetSlop(100);//多个查询条件的词之间的最大距离.在文章中相隔太远 也就无意义.（例如 “大学生”这个查询条件和"简历"这个查询条件之间如果间隔的词太多也就没有意义了。） ???????????//TopScoreDocCollector是盛放查询结果的容器 ???????????TopScoreDocCollector collector = TopScoreDocCollector.create(1000, true); ???????????searcher.Search(query, null, collector);//根据query查询条件进行查询，查询结果放入collector容器 ???????????ScoreDoc[] docs = collector.TopDocs(0, collector.GetTotalHits()).scoreDocs;//得到所有查询结果中的文档,GetTotalHits():表示总条数 ??TopDocs(300, 20);//表示得到300（从300开始），到320（结束）的文档内容. ???????????//可以用来实现分页功能 ???????????List<ViewModelContent> viewModelList = new List<ViewModelContent>(); ???????????for (int i = 0; i < docs.Length; i++) ???????????{ ???????????????// ???????????????//搜索ScoreDoc[]只能获得文档的id,这样不会把查询结果的Document一次性加载到内存中。降低了内存压力，需要获得文档的详细内容的时候通过searcher.Doc来根据文档id来获得文档的详细内容对象Document. ???????????????ViewModelContent viewModel = new ViewModelContent(); ???????????????int docId = docs[i].doc;//得到查询结果文档的id（Lucene内部分配的id） ???????????????Document doc = searcher.Doc(docId);//找到文档id对应的文档详细信息 ???????????????viewModel.Id = Convert.ToInt32(doc.Get("Id"));// 取出放进字段的值 ???????????????viewModel.Title = doc.Get("Title"); ???????????????viewModel.Content = Common.WebCommon.CreateHightLight(Request["txtSearch"], doc.Get("Content"));//将搜索的关键字高亮显示。 ???????????????viewModelList.Add(viewModel); ???????????} ???????????return viewModelList; ???????} ???????public void CreateSerachContent() ???????{ ????????????????}

public ?class WebCommon ???{ ???????public static List<string> PanGuSplitWord(string msg) ???????{ ???????????Analyzer analyzer = new PanGuAnalyzer(); ???????????TokenStream tokenStream = analyzer.TokenStream("", new StringReader(msg)); ???????????Lucene.Net.Analysis.Token token = null; ???????????List<string> list = new List<string>(); ???????????while ((token = tokenStream.Next()) != null) ???????????{ ???????????????list.Add(token.TermText()); ???????????} ???????????return list; ???????} ???????// /创建HTMLFormatter,参数为高亮单词的前后缀 ???????public static string CreateHightLight(string keywords, string Content) ???????{ ???????????PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = ????????????new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>"); ???????????//创建Highlighter ，输入HTMLFormatter 和盘古分词对象Semgent ???????????PanGu.HighLight.Highlighter highlighter = ???????????new PanGu.HighLight.Highlighter(simpleHTMLFormatter, ???????????new Segment()); ???????????//设置每个摘要段的字符数 ???????????highlighter.FragmentSize = 150; ???????????//获取最匹配的摘要段 ???????????return highlighter.GetBestFragment(keywords, Content); ???????} ???}

 ?????//new IndexManager().StartThread(); ???????????IndexManager.instance.StartThread();

 ???????<add key="LuceneDir" value="E:\lucenedir"/>