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

2015-01-09 11:44 图安阅读(610) 评论(0) 编辑收藏举报

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。

 1 static void CreateIndex()
 2         {
 3             PanGu.Segment.Init();
 4        
 5             var service = new Lura.Gxt.Service.Sg_AuthorSummaryServiceTest();
 6             var writer = new IndexWriter(FSDirectory.Open(INDEX_DIR), analyzer, true, IndexWriter.MaxFieldLength.LIMITED);
 7 
 8             var totalCount = service.GetAuthorCount();
 9             var totalPages = (int)Math.Ceiling(totalCount / (float)1000);
10             for (int i = 1; i <= totalPages; i++)
11             {
12                 Stopwatch sw = new Stopwatch();
13                 sw.Start();
14 
15                 var authorList = service.GetPagedAuthor(i);
16                 foreach (var item in authorList)
17                 {
18                     Document doc = new Document();
19                     Field authorId = new Field("AuthorId", item.AuthorId.ToString(), Field.Store.YES, Field.Index.ANALYZED);
20                     Field dynasty = new Field("Dynasty", SafeGetString(item.Dynasty), Field.Store.YES, Field.Index.ANALYZED);
21                     Field authorName = new Field("AuthorName", SafeGetString(item.AuthorName), Field.Store.YES, Field.Index.ANALYZED);
22                     Field authorSummary = new Field("AuthorSummary", SafeGetString(item.AuthorSummary), Field.Store.YES, Field.Index.ANALYZED);
23                     Field authorSmallImage = new Field("AuthorSmallImage", SafeGetString(item.AuthorSmallImage), Field.Store.YES, Field.Index.NO);
24                     Field authorLargeImage = new Field("AuthorLargeImage", SafeGetString(item.AuthorLargeImage), Field.Store.YES, Field.Index.NO);
25                     Field statuses = new Field("Statuses", SafeGetString(item.Statuses), Field.Store.YES, Field.Index.NO);
26 
27                     doc.Add(authorId);
28                     doc.Add(dynasty);
29                     doc.Add(authorName);
30                     doc.Add(authorSummary);
31                     doc.Add(authorSmallImage);
32                     doc.Add(authorLargeImage);
33                     doc.Add(statuses);
34 
35                     writer.AddDocument(doc);
36                 }
37 
38                 sw.Stop();
39                 Console.Write("建立" + authorList.Count() + "索引,花费: " + sw.Elapsed);
40             }
41 
42             writer.Optimize();
43             writer.Commit();
44             writer.Dispose();
45       
46         }

第二步：查询索引　　

 1  public SearchPeopleView SearchAuthor(string keyword, int pagesize, int page)
 2        {
 3            var searchPeopleView = new SearchPeopleView();
 4          
 5 
 6             if (string.IsNullOrEmpty(keyword))
 7                 return searchPeopleView;
 8 
 9             IndexSearcher searcher = new IndexSearcher(FSDirectory.Open(Author_INDEX_DIR), true);
10             QueryParser qp = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, "AuthorName", analyzer);
11             Query query = qp.Parse(keyword);
12 
13 
14             var collector = TopScoreDocCollector.Create(page * pagesize, false);
15 
16             searcher.Search(query, collector);
17 
18 
19             //开始数
20             int start = pagesize * (page - 1);
21             //结束数
22             int limit = start + pagesize;
23 
24             ScoreDoc[] hits = collector.TopDocs(start, limit).ScoreDocs;
25 
26 
27             var authorList = new List<Author>();
28             foreach (ScoreDoc sd in hits)
29             {
30 
31                 Document doc = searcher.Doc(sd.Doc);
32                 var summaryall = doc.Get("AuthorSummary");
33                 var summary = summaryall.Length> 300 ? summaryall.Substring(0,300)+"......": summaryall;
34 
35                 var author = new Author()
36                 {
37                     AuthorId = Int64.Parse(doc.Get("AuthorId")),
38                     Dynasty = doc.Get("Dynasty"),
39                     AuthorName = doc.Get("AuthorName"),
40                     AuthorSummary = SetHighlighter(keyword, summary),
41                     AuthorSmallImage = doc.Get("AuthorSmallImage"),
42                     AuthorLargeImage = doc.Get("AuthorLargeImage"),
43                     Statuses = doc.Get("Statuses")
44                 };
45 
46                 authorList.Add(author);
47             }
48             searcher.Dispose();
49 
50 
51 
52             searchPeopleView.PageInfo.CurrentPage = page;
53             searchPeopleView.PageInfo.TotalCount = collector.TotalHits;
54             searchPeopleView.PageInfo.TotalPage = (int)Math.Ceiling(collector.TotalHits / (float)pagesize);// collector.TotalHits;
55             searchPeopleView.PeopleList = authorList;
56 
57 
58             return searchPeopleView;
59         }

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.

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

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