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