Lucene1

/**
     * StandardAnalyzer解析器
     * 1.按空格分词
     * 2.所有大写字母转换成小写字母
     * 3.去除无用的单词(is,the,are)
     */
    public void getLucene1()
    {
        //创建一个标准分析器(StandardAnalyzer),用于分析搜索引擎遇到各种脚本
        Analyzer analyzer = new StandardAnalyzer();
        //测试字符串
        StringReader sr = new StringReader("come Lucene in the Name"); //$NON-NLS-1$
        //生成TokenStream对象
        TokenStream tokenStream = analyzer.tokenStream("name", sr); //$NON-NLS-1$
        try
        {
            int i = 0;
            Token next = tokenStream.next();
            while (next != null)
            {
                i++;
                System.out.println("第" + i + "行：" + next.termText());
                next = tokenStream.next();
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
   
    /**
     * 建立索引，进行搜索
     */
    public void getLucene2()
    {
        //进行索引的单元，将文件转化成Document对象进行索引
        Document doc1 = new Document();
        doc1.add(new Field("name", "lighter lighter lighter javaeye com",
                Field.Store.YES, Field.Index.TOKENIZED));
       
        Document doc2 = new Document();
        doc2.add(new Field("name2", "lighter blog", Field.Store.YES,
                Field.Index.TOKENIZED));
       
        try
        {
            //在文档中加入索引
            IndexWriter indexWriter = new IndexWriter(
                    FSDirectory.getDirectory("E:\\", true),
                    new StandardAnalyzer(), true);
            indexWriter.setMaxFieldLength(3);
            indexWriter.addDocument(doc1);
           
            indexWriter.setMaxFieldLength(3);
            indexWriter.addDocument(doc2);
           
            indexWriter.close();
           
            query("lighter");
            query("javaeye");
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
   
    public void query(String str)
    {
            IndexSearcher indexSearche = new IndexSearcher(path);
            QueryParser queryParser = new QueryParser("name",
                    new StandardAnalyzer());
            Query query = queryParser.parse(str);
            Hits hits = indexSearche.search(query);
            System.out.println("查找\"" + str + "\"共" + hits.length() + "结果");
    }