lucene 3.0 + 盘古分词 + 关键字高亮 + 分页的实现与demo

Demo, 请见 www.guoxuetow.com/search

 

第一步创建索引:  很简单，从数据库里查出你想要索引的数据，并调用lucene的api进行索引就行了。

static void CreateIndex()
        {
            PanGu.Segment.Init();
       
            var service = new Lura.Gxt.Service.Sg_AuthorSummaryServiceTest();
            var writer = new IndexWriter(FSDirectory.Open(INDEX_DIR), analyzer, true, IndexWriter.MaxFieldLength.LIMITED);

            var totalCount = service.GetAuthorCount();
            var totalPages = (int)Math.Ceiling(totalCount / (float)1000);
            for (int i = 1; i <= totalPages; i++)
            {
                Stopwatch sw = new Stopwatch();
                sw.Start();

                var authorList = service.GetPagedAuthor(i);
                foreach (var item in authorList)
                {
                    Document doc = new Document();
                    Field authorId = new Field("AuthorId", item.AuthorId.ToString(), Field.Store.YES, Field.Index.ANALYZED);
                    Field dynasty = new Field("Dynasty", SafeGetString(item.Dynasty), Field.Store.YES, Field.Index.ANALYZED);
                    Field authorName = new Field("AuthorName", SafeGetString(item.AuthorName), Field.Store.YES, Field.Index.ANALYZED);
                    Field authorSummary = new Field("AuthorSummary", SafeGetString(item.AuthorSummary), Field.Store.YES, Field.Index.ANALYZED);
                    Field authorSmallImage = new Field("AuthorSmallImage", SafeGetString(item.AuthorSmallImage), Field.Store.YES, Field.Index.NO);
                    Field authorLargeImage = new Field("AuthorLargeImage", SafeGetString(item.AuthorLargeImage), Field.Store.YES, Field.Index.NO);
                    Field statuses = new Field("Statuses", SafeGetString(item.Statuses), Field.Store.YES, Field.Index.NO);

                    doc.Add(authorId);
                    doc.Add(dynasty);
                    doc.Add(authorName);
                    doc.Add(authorSummary);
                    doc.Add(authorSmallImage);
                    doc.Add(authorLargeImage);
                    doc.Add(statuses);

                    writer.AddDocument(doc);
                }

                sw.Stop();
                Console.Write("建立" + authorList.Count() + "索引,花费: " + sw.Elapsed);
            }

            writer.Optimize();
            writer.Commit();
            writer.Dispose();
      
        }

 

第二步： 查询索引　　

 public SearchPeopleView SearchAuthor(string keyword, int pagesize, int page)
       {
           var searchPeopleView = new SearchPeopleView();
         

            if (string.IsNullOrEmpty(keyword))
                return searchPeopleView;

            IndexSearcher searcher = new IndexSearcher(FSDirectory.Open(Author_INDEX_DIR), true);
            QueryParser qp = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, "AuthorName", analyzer);
            Query query = qp.Parse(keyword);


            var collector = TopScoreDocCollector.Create(page * pagesize, false);

            searcher.Search(query, collector);


            //开始数
            int start = pagesize * (page - 1);
            //结束数
            int limit = start + pagesize;

            ScoreDoc[] hits = collector.TopDocs(start, limit).ScoreDocs;


            var authorList = new List<Author>();
            foreach (ScoreDoc sd in hits)
            {

                Document doc = searcher.Doc(sd.Doc);
                var summaryall = doc.Get("AuthorSummary");
                var summary = summaryall.Length> 300 ? summaryall.Substring(0,300)+"......": summaryall;

                var author = new Author()
                {
                    AuthorId = Int64.Parse(doc.Get("AuthorId")),
                    Dynasty = doc.Get("Dynasty"),
                    AuthorName = doc.Get("AuthorName"),
                    AuthorSummary = SetHighlighter(keyword, summary),
                    AuthorSmallImage = doc.Get("AuthorSmallImage"),
                    AuthorLargeImage = doc.Get("AuthorLargeImage"),
                    Statuses = doc.Get("Statuses")
                };

                authorList.Add(author);
            }
            searcher.Dispose();



            searchPeopleView.PageInfo.CurrentPage = page;
            searchPeopleView.PageInfo.TotalCount = collector.TotalHits;
            searchPeopleView.PageInfo.TotalPage = (int)Math.Ceiling(collector.TotalHits / (float)pagesize);// collector.TotalHits;
            searchPeopleView.PeopleList = authorList;


            return searchPeopleView;
        }

 

第三步 ，分页展示

<div class="row">
            <h3 id="people" class="page-header">人物 <small>共@(Model.PeopleView.PageInfo.TotalCount)条记录,当前第@(Model.PeopleView.PageInfo.CurrentPage)页</small></h3>

            <ul class="media-list">
                @foreach (var p in Model.PeopleView.PeopleList)
                {
                    <li class="media">
                        <div class="pull-left">
                            <a href="/people/@p.AuthorId">
                                <img  width="50"  alt="@Html.Raw(p.AuthorName)" src="@p.AuthorSmallImage" />
                            </a>
                        </div>

                        <div class="media-body">
                            <h4 class="media-heading"><span>[人物] @(p.Dynasty)▪</span><a href="/people/@p.AuthorId">@Html.Raw(@p.AuthorName)</a>  </h4>

                            <p>@Html.Raw(p.AuthorSummary)</p>
                            <a href="/people/@p.AuthorId">www.guoxuetow.com/people/@p.AuthorId</a>
                        </div>
                    </li>
                }
                  @if (Model.PeopleView.PeopleList.Count() == 0)
                {
                    <li class="media">
                        <h4 class="media-heading">没有人物记录。
                        </h4>
                    </li>
                }
            </ul>

            
              <ul id="author-pagination" class="pagination-sm"></ul>

                <script type="text/javascript">
                    var totlaapage = parseInt('@(Model.PeopleView.PageInfo.TotalPage)');
                    var apage = parseInt('@(Model.PeopleView.PageInfo.CurrentPage)');

                    $('#author-pagination').twbsPagination({
                        totalPages: totlaapage,
                        startPage: apage,
                        visiblePages: 20,
                        href: '@Html.Raw(@authorPageUrl)',
                        first: '首页',
                        prev: '上一页',
                        next: '下一页',
                        last: '末页',
                        onPageClick: function (event, page) {
                            window.location.href = "@Html.Raw(@authorPageUrl1)" + page;
                            // $('#page-content').text('Page ' + page);
                        }
                    });
                </script>

        </div>

 

 

 

晚上回家再写.