Java Lucene Highlighter令牌流异常

我对Lucene Highlighter有问题。我在Stackoverflow和其他程序中发现了一些代码，但这些代码在我的程序中不起作用。这是一种我尝试搜索和higlight单词的方法，但当我搜索某物时，程序会给我异常

方法：

private static void useIndex(String query, String field, String option)
            throws ParseException, CorruptIndexException, IOException, InvalidTokenOffsetsException {
        // StandardAnalyzer analyzer = new StandardAnalyzer();
        Query q = new QueryParser(field, analyzer).parse(query);

        int hitsPerPage = 5;

        IndexReader reader = DirectoryReader.open(index);
        IndexSearcher searcher = new IndexSearcher(reader);

        TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage);

        searcher.search(q, collector);

        ScoreDoc[] hits = collector.topDocs().scoreDocs;

        SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();
        Highlighter highlighter = new Highlighter(htmlFormatter, new QueryScorer(q));

        // display results
        System.out.println("Found " + hits.length + " hits for " + query);
        for (int i = 0; i < hits.length; ++i) {
            int docId = hits[i].doc;
            Document d = searcher.doc(docId);
            String docURL = d.get("url");
            String docContent = d.get("content");

            TokenStream tokenStream = TokenSources.getAnyTokenStream(reader, docId, "content", analyzer);
            TextFragment[] frag = highlighter.getBestTextFragments(tokenStream, docContent, false, 4);

            String docFrag="";

            if ((frag[0] != null) && (frag[0].getScore() > 0)) {
                docFrag=frag[0].toString();
            }
            model.addRow(new Object[] { docURL, findSilimar(docId), docFrag });
        }
        reader.close();
    }

我什么都试过了，但我不知道怎么了

---

另外，对不起我的英语。

一个

NoClassDefFoundError

意味着类不在类路径中，所以您应该弄清楚需要添加什么jar才能获得它<代码>内存索引位于：lucene-memory-x.x.x.jar

顺便说一下，乍一看，您提供的代码中似乎不会抛出此异常

    Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/apache/lucene/index/memory/MemoryIndex
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.index.memory.MemoryIndex