快速学习Lucene-Lucene入门程序

@Test
    public void createIndex() throws Exception {

        //指定索引库存放的路径
        //D:\temp\index
        Directory directory = FSDirectory.open(new File("D:\\temp\\index").toPath());
        //索引库还可以存放到内存中
        //Directory directory = new RAMDirectory();
        //创建indexwriterCofig对象
        IndexWriterConfig config = new IndexWriterConfig();
        //创建indexwriter对象
        IndexWriter indexWriter = new IndexWriter(directory, config);
        //原始文档的路径
        File dir = new File("D:\\temp\\searchsource");
        for (File f : dir.listFiles()) {
            //文件名
            String fileName = f.getName();
            //文件内容
            String fileContent = FileUtils.readFileToString(f);
            //文件路径
            String filePath = f.getPath();
            //文件的大小
            long fileSize  = FileUtils.sizeOf(f);
            //创建文件名域
            //第一个参数：域的名称
            //第二个参数：域的内容
            //第三个参数：是否存储
            Field fileNameField = new TextField("filename", fileName, Field.Store.YES);
            //文件内容域
            Field fileContentField = new TextField("content", fileContent, Field.Store.YES);
            //文件路径域（不分析、不索引、只存储）
            Field filePathField = new TextField("path", filePath, Field.Store.YES);
            //文件大小域
            Field fileSizeField = new TextField("size", fileSize + "", Field.Store.YES);

            //创建document对象
            Document document = new Document();
            document.add(fileNameField);
            document.add(fileContentField);
            document.add(filePathField);
            document.add(fileSizeField);
            //创建索引，并写入索引库
            indexWriter.addDocument(document);
        }
        //关闭indexwriter
        indexWriter.close();
    }

	//查询索引库
    @Test
    public void searchIndex() throws Exception {
        //指定索引库存放的路径
        //D:\temp\index
        Directory directory = FSDirectory.open(new File("D:\\temp\\index").toPath());
        //创建indexReader对象
        IndexReader indexReader = DirectoryReader.open(directory);
        //创建indexsearcher对象
        IndexSearcher indexSearcher = new IndexSearcher(indexReader);
        //创建查询
        Query query = new TermQuery(new Term("filename", "apache"));
        //执行查询
        //第一个参数是查询对象，第二个参数是查询结果返回的最大值
        TopDocs topDocs = indexSearcher.search(query, 10);
        //查询结果的总条数
        System.out.println("查询结果的总条数："+ topDocs.totalHits);
        //遍历查询结果
        //topDocs.scoreDocs存储了document对象的id
        for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
            //scoreDoc.doc属性就是document对象的id
            //根据document的id找到document对象
            Document document = indexSearcher.doc(scoreDoc.doc);
            System.out.println(document.get("filename"));
            //System.out.println(document.get("content"));
            System.out.println(document.get("path"));
            System.out.println(document.get("size"));
            System.out.println("-------------------------");
        }
        //关闭indexreader对象
        indexReader.close();
    }