public LuceneDomain searchIndex(String searchStr) throws Exception{

    	

        File indexDir = new File(PropertiesUtil.getPropertyValue(searchDirKEY)); 

        

        String[] fields=new String[]{"id","source","title","context","url"};

        //索引目录  

        Directory dir=FSDirectory.open(indexDir);  

        //根据索引目录创建读索引对象  

        IndexReader reader = IndexReader.open(dir);  

        //搜索对象创建  

        IndexSearcher searcher = new IndexSearcher(reader);  

        //IKAnalyzer中文分词  

        Analyzer analyzer = new IKAnalyzer();  

        //创建查询解析对象  

        //QueryParser parser = new QueryParser(Version.LUCENE_36,"context", analyzer);

        QueryParser parser = new MultiFieldQueryParser(Version.LUCENE_36,fields, analyzer);

        parser.setDefaultOperator(QueryParser.AND_OPERATOR);  

        //根据域和目标搜索文本创建查询器 

        //Query query = parser.parse(searchStr);

        Query query =IKQueryParser.parseMultiField(fields, searchStr);

        System.out.println("Searching for: " + query.toString("context"));  

        //对结果进行相似度打分排序  

        TopScoreDocCollector collector = TopScoreDocCollector.create(maxBufferedDocs,false);  

        searcher.search(query, collector);

        //获取结果  

        ScoreDoc[] hits = collector.topDocs().scoreDocs;  

  

        int numTotalHits = collector.getTotalHits();  

        LuceneDomain lucene=new LuceneDomain();

        lucene.setTotalNum(numTotalHits);

        lucene.setSearchText(searchStr);

        List<SearchDomain> searchList=new ArrayList<SearchDomain>();

        //显示搜索结果 

        SearchDomain search=null;

        for (int i = 0; i < hits.length; i++) {  

            search=new SearchDomain();

        	Docum