2013-04-26期-索引内容修改、删除

修改mainTest测试类

    public class mainTest {
        /**
         *  Function:抓取网页内容
         *  @author JLC
         *  @return
         */
        public static List<Document>  getWebContentDocuments(){
            List<Document> docs = new ArrayList<Document>();
            WebContent wc = new WebContent();
            Document doc1 = PackContentObject.convertContentToDoc(wc.getContentFromSite("http://news.163.com"));
            docs.add(doc1);
            Document doc2 = PackContentObject.convertContentToDoc(wc.getContentFromSite("http://news.sohu.com/"));
            docs.add(doc2);
            return docs;
        }
        /**
         * 创建索引
         */
        public static void createSearchEngineData(){
             SearchEngineCore  se = SearchObject.getInstance().getLuceneContext("search");
             List<Document> docList = getWebContentDocuments();
             for(Document doc:docList){
                 try{
                     se.getTw().addDocument(doc);
                     se.commitIndex();
                     se.refreshData();
                     se.getNRTManager().maybeRefresh();
                 }catch(Exception e){
                     e.printStackTrace();
                 }
             }
        }

        public static void main(String args[]){
            //创建索引数据
            //createSearchEngineData(); 
            //查询索引
            //searchContent("网易新闻");

            //更新所有title=网易新闻 的索引   如果title=网易新闻 的索引有多条，更新后只会全部删除
            Term term = new Term("title","网易新闻");
            ContentObject content  =new ContentObject();
            content.setTitle("test");
            content.setContent("测试内容");
            updateContent(term,content);
            //删除title=test  的索引
            deleteContent("test");


        }


        /**
         * 创建搜索方法
         * @param keyWord
         */
        public static void searchContent(String keyWord){
            //List<ContentObject> searcheResult =  new ArrayList<ContentObject>();
            try{
                /*
                Version v = Version.LUCENE_42;
                //取得查询对象
                IndexReader[] readers =  SearchObject.getInstance().getSearcherReads();
                //多域查询
                MultiReader mReaders = new MultiReader(readers);
                IndexSearcher indexSearch = new  IndexSearcher(mReaders); 
                //自带的标准分词
                Analyzer analyzer =new StandardAnalyzer(v);
                //创建boolean查询
                BooleanQuery query = new BooleanQuery();
                String[] field = {"title", "content"};
                BooleanClause.Occur[] flags = new BooleanClause.Occur[2];
                flags[0] = BooleanClause.Occur.SHOULD;
                flags[1] = BooleanClause.Occur.SHOULD;
                Query query1 = MultiFieldQueryParser.parse(v, QueryParser.escape(keyWord), field, flags, analyzer);
                //必须满足该查询条件
                query.add(query1, Occur.MUST);
                */

                //精确查询，TermQuery 里面内容必须完全匹配才能查询到结果
                IndexSearcher indexSearch = SearchObject.getInstance().getSearcher("search");
                TermQuery  query = new TermQuery(new Term("title","网易新闻"));

                //10000为最多查询条数
                TopScoreDocCollector topCollector = TopScoreDocCollector.create(10000, true);
                indexSearch.search(query, topCollector); 
                //取得查询结果
                TopDocs topDocs = topCollector.topDocs(); 
                int resultCount=topDocs.totalHits;
                for(int i=0;i<resultCount;i++){
                    Document doc = indexSearch.doc(topDocs.scoreDocs[i].doc);
                    System.out.println("标题："+doc.get("title"));
                    System.out.println("内容："+doc.get("content").substring(0,200));
                }
                System.out.println("查询结果条数："+resultCount);
            }catch(Exception e){
                e.printStackTrace();
            }
        }

        /**
         * 删除索引内容
         */
        public static void deleteContent(String title){
            try{
                 SearchEngineCore  se =  SearchObject.getInstance().getLuceneContext("search");
                 se.getTw().deleteDocuments(new Term("title",title));
                 se.commitIndex();
                 se.refreshData();
                 se.getNRTManager().maybeRefresh();
             }catch(Exception e){
                 e.printStackTrace();
             }  
        }

        /**
         * 更新索引内容
         * @param term  原索引
         * @param content  更新的内容
         */
        public static void updateContent(Term term,ContentObject content ){
            try{
                SearchEngineCore  se =  SearchObject.getInstance().getLuceneContext("search");
                Document doc = PackContentObject.convertContentToDoc(content);
                se.getTw().updateDocument(term,doc);
                   se.commitIndex();
                 se.refreshData();
                 se.getNRTManager().maybeRefresh();
            }catch(Exception e){
                e.printStackTrace();
            }
        }


    }