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:
TopDocs tds = searcher.search(booleanQuery, 500); ScoreDoc[] sds = tds.scoreDocs; Formatter formatter = new SimpleHTMLFormatter("<span class="highlight">", "</span>"); Highlighter hl = new Highlighter(formatter,new QueryScorer(booleanQuery)); 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);