[转载]使用Lucene.net提升网站搜索速度整合记录 - Miao31 - 博客园

        //网站搜索代码
        public static void Search(string keyword,int typeid,int pageNo)
        {
            int onePage=20;//一页多少
            int TotalNum=1000;//一次加载多少

            if (pageNo < 0) pageNo = 0;
            if (pageNo * onePage > TotalNum)
                pageNo = TotalNum / onePage;

            //索引加载的目录
            DirectoryInfo INDEX_DIR = new DirectoryInfo(m_indexPath+"//Index//index1");
            IndexSearcher searcher = new IndexSearcher(FSDirectory.Open(INDEX_DIR), true);
            QueryParser qp = new QueryParser(Version.LUCENE_30, "keyContent", analyzer);
            Query query = qp.Parse(keyword); 
            //Console.WriteLine("query> {0}", query);

            //设置排序问题
            Sort sort = new Sort(new SortField[]{new SortField("recvTimes", SortField.INT, true),new SortField("updateTime", SortField.STRING, true)});

            //设置高亮显示的问题
            PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
            PanGu.HighLight.Highlighter highlighter =new PanGu.HighLight.Highlighter(simpleHTMLFormatter,new Segment());
            highlighter.FragmentSize = 50;

            TopFieldDocs tds = searcher.Search(query,null, 1000, sort);
            Console.WriteLine("TotalHits: " + tds.TotalHits);

            /* 计算显示的条目 */
            int count = tds.ScoreDocs.Length;
            int start = (pageNo - 1) * onePage;
            int end = pageNo * onePage > count ? count : pageNo * onePage;
            //返回集合列表
            for (int i = start; i < end; i++)
            {
                Document doc = searcher.Doc(tds.ScoreDocs[i].Doc);
                string contentResult = highlighter.GetBestFragment(keyword, doc.Get("keyContent").ToString());
                Console.WriteLine(contentResult + ">>" + doc.Get("recvTimes") + "<<" + doc.Get("updateTime"));
            }

            searcher.Dispose();
        }