学习Lucene笔记二:搜索初步

/**
     * 搜索
     */
    public void searcher(){
        IndexReader reader = null;
        try {
            //1.创建Directory
            Directory directory =  FSDirectory.open(new File("D:/Lucene/index01"));//索引是建立在硬盘上
        
            //2.创建IndexReader
             reader = IndexReader.open(directory);
            
            //3.根据IndexReader创建IndexSearcher
             IndexSearcher searcher = new IndexSearcher(reader);
             
            //4.创建搜索的Query
             //创建Parser来确定要搜索文件的内容,第二个参数表示搜索的域
             QueryParser parser = new QueryParser(Version.LUCENE_36,"content",new StandardAnalyzer(Version.LUCENE_36));
             //创建Query表示搜索域为content中包含Thread的文档
             Query query = parser.parse("wuchaowen");
             
             
            //5.根据Seracher搜索并返回TopDocs
             
             TopDocs tds = searcher.search(query, 10);//搜索的条数
             
            //6.根据TopDocs获取ScoreDoc对象
            ScoreDoc[] sds =  tds.scoreDocs;
            for(ScoreDoc sd:sds){
                //7.根据Searcher和ScoreDoc对象获取Document对象
                Document doc = searcher.doc(sd.doc);
                
                //8.根据Document对象获取需要的值
                
                System.out.println(doc.get("filename")+"["+doc.get("path")+"]");
            }
             
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }finally{
            //9.关闭Reader
            if(reader!=null)
                try {
                    reader.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            
        }    
    }

源码