lucene的一简单例子
1.引入lucene包，用到了Junit，包搞进来就可以了
2.先跑建立索引文件的单元测试，有了索引才能查询嘛，然后在跑下面的检索数据方法
3.目录根据自己需要更改哦
private final String indexPath = "E:/lucene";private final String searchPath = "E:/123";@Test/** * 建立索引文件 */public void createIndexFiles() throws Exception {Directory d = new SimpleFSDirectory(new File(indexPath));// 创建索引的目录IndexWriter iw = new IndexWriter(d, new StandardAnalyzer(Version.LUCENE_29), true, MaxFieldLength.UNLIMITED);File f = new File(searchPath);// 要检索的目录addToWriter(f, iw);iw.close();}/** * 递归调用检索文件夹 * * @param f * @param iw * @throws Exception */public void addToWriter(File f, IndexWriter iw) throws Exception {if (f.isDirectory()) {File[] files = f.listFiles();for (int i = 0; i < files.length; i++)addToWriter(files[i], iw);} else if (f.getName().endsWith(".html")|| f.getName().endsWith(".txt")) {Document doc = new Document();/** * Store.YES 存储 Index.NO 词法分析器不在解析此Field */doc.add(new Field("title", f.getName(), Store.YES, Index.NO));doc.add(new Field("content", new FileReader(f)));iw.addDocument(doc);}}/** * 检索数据 * * @throws Exception */@Testpublic void search() throws Exception {Directory d = new SimpleFSDirectory(new File(indexPath));IndexSearcher search = new IndexSearcher(d, true);QueryParser qp = new QueryParser(Version.LUCENE_29, "content",new StandardAnalyzer(Version.LUCENE_29));/** * 检索关键字，其实Google地址栏里就是输入的这里哦，当然Google肯定是自己公司的搜索技术，这里只是举例 */Query query = qp.parse("content");TopDocs tp = search.search(query, 100);System.out.println("检索到：" + tp.totalHits + "个文件包含此数据");for (int i = 0; i < tp.scoreDocs.length; i++) {int num = tp.scoreDocs[i].doc;Document doc = search.doc(num);System.out.println("文件名为:" + doc.get("title"));}}