lucene4.5.0----高亮显示实现

来源：互联网发布：ios10后4g网络用不了编辑：程序博客网时间：2024/05/22 06:18

重要的类：Highlighter；Scorer；Formatter；Fragmenter；

简单的高亮显示实现：

public class HighlighterUtil {public void createSimpleHighLighter(String queryString) {try {String string="I like basketball . I like football too . " +"I am come from jiangxi province .";QueryParser queryParser=new QueryParser(Version.LUCENE_45, "text",new StandardAnalyzer(Version.LUCENE_45));Query query=queryParser.parse(queryString);       //Query query=new TermQuery(new Term("text", input));QueryScorer fragmentScorer=new QueryScorer(query,"text");       //SimpleSpanFragmenter fragmenter=new SimpleSpanFragmenter(fragmentScorer);Formatter formatter=new SimpleHTMLFormatter("<BIG>","</BIG>");Highlighter highlighter=new Highlighter(formatter,fragmentScorer);       //highlighter.setTextFragmenter(fragmenter);String result=highlighter.getBestFragment(new StandardAnalyzer(Version.LUCENE_45),"text",string);System.out.println(result);} catch (IOException e) {e.printStackTrace();} catch (InvalidTokenOffsetsException e) {e.printStackTrace();} catch (ParseException e) {e.printStackTrace();}}}

测试：

@Testpublic void  simpleHighLighterTest() {HighlighterUtil highlighterUtil=new HighlighterUtil();highlighterUtil.createSimpleHighLighter("like");}

输出：

I <BIG>like</BIG> basketball . I <BIG>like</BIG> football too . I am come from jiangxi province .

这就是最基础的。当然你还可以进行扩展：比如：对文档名包含某个关键字进行高亮，对文档内容包括某个关键字进行高亮。

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