lucene 高亮

import org.apache.lucene.document.Document;import org.apache.lucene.queryparser.classic.MultiFieldQueryParser;import org.apache.lucene.queryparser.classic.QueryParser;import org.apache.lucene.search.IndexSearcher;import org.apache.lucene.search.Query;import org.apache.lucene.search.ScoreDoc;import org.apache.lucene.search.TopDocs;import org.apache.lucene.search.highlight.Formatter;import org.apache.lucene.search.highlight.Highlighter;import org.apache.lucene.search.highlight.QueryScorer;import org.apache.lucene.search.highlight.Scorer;import org.apache.lucene.search.highlight.SimpleHTMLFormatter;import com.itheima.bean.Article;import com.itheima.utils.LuceneUtils;/** *  *  * 对查询出来的结果所包含的搜索关键字进行高亮... * @author Administrator * */public class TestHighLighter {    public static void main(String[] args) throws Exception {        String fields []={"title"};        /**         * 使用lucene 自带的高亮器进行高亮...         */        String keywords="lucene";        QueryParser queryParser=new MultiFieldQueryParser(LuceneUtils.getMatchVersion(),fields,LuceneUtils.getAnalyzer());        Query query=queryParser.parse(keywords);        IndexSearcher indexSearcher=LuceneUtils.getIndexSearcher();        TopDocs topDocs=indexSearcher.search(query,100);        /**         * 使用lucene 自带的高亮起进行高亮..         *          *///      solr 是基于lucene 的一个全文检索服务器.        //solr 是基于<font  color='red' >lucene</font> 的一个全文检索服务器.        //高亮显示的格式...        Formatter formatter=new SimpleHTMLFormatter("<font color='red'>", "</font>");        //query 里面条件，条件里面有搜索关键字        Scorer fragmentScorer=new QueryScorer(query);         //构造高亮气...        /**         * 1:我要高亮成什么颜色         * 2：我要将那些关键字进行高亮...         *          */        Highlighter highlighter=new Highlighter(formatter, fragmentScorer);        Article article=null;        System.out.println("总记录数==="+topDocs.totalHits);        for(ScoreDoc scoreDoc:topDocs.scoreDocs){            article=new Article();            Document document=indexSearcher.doc(scoreDoc.doc);            String title=document.get("title");            String content=document.get("content");            System.out.println("没有高亮之前的结果title=="+title);            System.out.println("没有高亮之前的结果content=="+content);            //将某段文本高亮，返回高亮过后的结果...            String hightitle=highlighter.getBestFragment(LuceneUtils.getAnalyzer(), "title", title);            //如果这个字段当中没有包含搜索关键字，你对这个字段的值进行高亮，返回的是null...            String highcontent=highlighter.getBestFragment(LuceneUtils.getAnalyzer(), "content", content);            System.out.println("高亮之后的结果------------------------------------------------------------");            System.out.println("高亮之后的结果hightitle=="+hightitle);            System.out.println("高亮之后的结果highcontent=="+highcontent);            if(hightitle==null){                article.setTitle(title);            }else{                article.setTitle(hightitle);            }            if(highcontent==null){                article.setContent(content);            }else{                article.setContent(highcontent);            }            //最终用户得到结果...            System.out.println("---"+article.getTitle());            System.out.println("---"+article.getContent());        }    }}