一个lucene搜索高亮显示的例子。

//... Above, create documents with two fields, one with term vectors (tv) and one without (notv)
  IndexSearcher searcher = new IndexSearcher(directory);
  QueryParser parser = new QueryParser("notv", analyzer);
  Query query = parser.parse("million");

  TopDocs hits = searcher.search(query, 10);

  SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();
  Highlighter highlighter = new Highlighter(htmlFormatter, new QueryScorer(query));
  for (int i = 0; i < 10; i++) {
    int id = hits.scoreDocs[i].doc;
    Document doc = searcher.doc(id);
    String text = doc.get("notv");
    TokenStream tokenStream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), id, "notv", analyzer);
    TextFragment[] frag = highlighter.getBestTextFragments(tokenStream, text, false, 10);//highlighter.getBestFragments(tokenStream, text, 3, "...");
    for (int j = 0; j < frag.length; j++) {
      if ((frag[j] != null) && (frag[j].getScore() > 0)) {
        System.out.println((frag[j].toString()));
      }
    }
    //Term vector
    text = doc.get("tv");
    tokenStream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), hits.scoreDocs[i].doc, "tv", analyzer);
    frag = highlighter.getBestTextFragments(tokenStream, text, false, 10);
    for (int j = 0; j < frag.length; j++) {
      if ((frag[j] != null) && (frag[j].getScore() > 0)) {
        System.out.println((frag[j].toString()));
      }
    }
    System.out.println("-------------");
  }