首页 > 代码库 > 代码片段,Lucene的高亮显示

代码片段,Lucene的高亮显示

代码高亮显示是通过在搜索到的Term中把匹配了用户输入的关键字的周围加上一些标记来实现(比如,关键字是 "中华" 查到的一个Term是 "中华人民共和国",则把这个Term修改一下 把"中华" 两个字加粗,最终结果是这样的:  <b>中华</b>人民共和国 

下边是具体实现的代码片段:

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
              TopDocs tds = searcher.search(booleanQuery, 500);
            ScoreDoc[] sds = tds.scoreDocs;
            <strong>Formatter formatter = new SimpleHTMLFormatter("<span class=\"highlight\">", "</span>");</strong>
            <strong>Highlighter hl = new Highlighter(formatter,new QueryScorer(booleanQuery));</strong>
            for (ScoreDoc sd : sds) {
                Document doc = searcher.doc(sd.doc);
                //title的高亮显示
                TokenStream tokenScream_title = context.analyzer.tokenStream("title", new StringReader(doc.get("title")));
                String title = hl.getBestFragment(tokenScream_title, doc.get("title"));
                //若返回空表示doc.get("title")中不包含相应的关键字
                if(title==null){
                    title=doc.get("title");
                }
//              System.out.println("title"+title);
                //summary的高亮显示
                TokenStream tokenScream_summary = context.analyzer.tokenStream("summary", new StringReader(doc.get("summary")));
                String summary = hl.getBestFragment(tokenScream_summary, doc.get("summary"));
                if(summary==null){
                    summary=doc.get("summary");
                }
//              System.out.println("summary" + summary);