//查询索引
    @Test
    public void searchIndex() throws Exception{
        //1.创建一个Director对象
        Directory directory = FSDirectory.open(new File("E:\\Java_Study\\Lucene\\index").toPath());
        //2.创建一个IndexReader对象
        IndexReader indexReader = DirectoryReader.open(directory);
        //3.创建一个IndexSearcher对象，构造方法中的参数indexReader对象
        IndexSearcher indexSearcher = new IndexSearcher(indexReader);
        //4.创建Query对象，TermQuery
        Query query = new TermQuery(new Term("name","spring"));
        //5.执行查询，得到一个TopDocs对象
        //参数1:查询对象  参数2:查询结果返回的最大记录数
        TopDocs topDocs = indexSearcher.search(query, 10);
        //6取查询结果的总记录数
        System.out.println("查询的总记录数："+topDocs.totalHits);
        //7.获取文档列表
        ScoreDoc[] scoreDocs = topDocs.scoreDocs;
        //8.打印文档中的内容
        for(ScoreDoc doc : scoreDocs){
            //取文档id
            int docId = doc.doc;
            //根据id取文档对象
            Document document = indexSearcher.doc(docId);
            System.out.println(document.get("name"));
            System.out.println(document.get("path"));
            //System.out.println(document.get("content"));
            System.out.println(document.get("size"));
        }
        //关闭indexReader
        indexReader.close();
    }

   //数值范围之间的查询
   @Test
   public void testRangeQuery() throws Exception{
  		//1.创建一个Director对象
       Directory directory = FSDirectory.open(new File("E:\\Java_Study\\Lucene\\index").toPath());
       //2.创建一个IndexReader对象
       IndexReader indexReader = DirectoryReader.open(directory);
       //3.创建一个IndexSearcher对象，构造方法中的参数indexReader对象
       IndexSearcher indexSearcher = new IndexSearcher(indexReader);
       //创建一个Query对象
       Query query = LongPoint.newRangeQuery("size", 0l, 100l);
       TopDocs topDocs = indexSearcher.search(query, 10);
       System.out.println("总记录数："+topDocs.totalHits);
       //7.获取文档列表
       ScoreDoc[] scoreDocs = topDocs.scoreDocs;
       //8.打印文档中的内容
       for(ScoreDoc doc : scoreDocs){
           //取文档id
           int docId = doc.doc;
           //根据id取文档对象
           Document document = indexSearcher.doc(docId);
           System.out.println(document.get("name"));
           System.out.println(document.get("path"));
           //System.out.println(document.get("content"));
           System.out.println(document.get("size"));
       }
   }

	//根据一句话进行查询
    @Test
    public void testQueryParser() throws Exception{
    	//1.创建一个Director对象
        Directory directory = FSDirectory.open(new File("E:\\Java_Study\\Lucene\\index").toPath());
        //2.创建一个IndexReader对象
        IndexReader indexReader = DirectoryReader.open(directory);
        //3.创建一个IndexSearcher对象，构造方法中的参数indexReader对象
        IndexSearcher indexSearcher = new IndexSearcher(indexReader);
        //4.创建一个QueryParser对象
        //参数1:默认搜索域 参数2：分析器对象
        IKAnalyzer analyzer = new IKAnalyzer();
        QueryParser queryParser = new QueryParser("name",analyzer);
        //5.使用QueryParser对象创建一个Query对象
        Query query = queryParser.parse("lucene是一个Java开发的全文检索开发工具包");
        //6.执行查询
        TopDocs topDocs = indexSearcher.search(query, 10);
        System.out.println("总记录数："+topDocs.totalHits);
        //7.获取文档列表
        ScoreDoc[] scoreDocs = topDocs.scoreDocs;
        //8.打印文档中的内容
        for(ScoreDoc doc : scoreDocs){
            //取文档id
            int docId = doc.doc;
            //根据id取文档对象
            Document document = indexSearcher.doc(docId);
            System.out.println(document.get("name"));
            System.out.println(document.get("path"));
            //System.out.println(document.get("content"));
            System.out.println(document.get("size"));
        }
    }