zoukankan      html  css  js  c++  java
  • java+lucene中文分词,来看看百度究竟是怎么找到你想要的(十分重要,楼主幸苦之作)

    我想只要是学过数据库的孩纸,不管是mysql,还是sqlsever,一提到查找,本能的想到的便是like关键字,其实去转盘网分类模式)之前也是采用这种算法,但我可以告诉大家一个很不幸的事情,like匹配其实会浪费大量的有用资源,原因这里不说了请自己想一想,我们还是直接摆事实验证。

       现在用去转盘网搜:hello 找个单词,如下:

       http://www.quzhuanpan.com/source/search.action?q=hello&currentPage=1

    翻页你会发现只要是包含hello的单词都找到了,但是如果你用like的话是不会有这个效果的,不信让我们再看一下,还好他来说电影网的分词算法我还没来得及修改,还可以看到现象:

       http://www.talaishuo.com/searchResult.do?searchFileName=hello

    你会发现只有开始包含hello这个字段的搜索串才能得到匹配,这就问题来了,数据库中大量的资源岂不是白白浪费了,不过没事,伟大的人类还是很聪明的,发明了分词,分词的原理我就不讲了,请自己百度吧,还是直接上代码,提示,这里需要四个jar包作为工具,我先上传的去转盘,想要做分词的请先下载:

       分词包下载地址1

       分词包下载地址2

    直接看代码:

    package com.tray.indexData;
    import java.io.File;
    import java.io.IOException;
    import java.io.StringReader;
    import java.math.BigInteger;
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
     
    import org.apache.lucene.analysis.Analyzer;
    import org.apache.lucene.analysis.TokenStream;
    import org.apache.lucene.document.Document;
    import org.apache.lucene.document.Fieldable;
    import org.apache.lucene.index.CorruptIndexException;
    import org.apache.lucene.index.IndexReader;
    import org.apache.lucene.index.IndexWriter;
    import org.apache.lucene.index.IndexWriterConfig;
    import org.apache.lucene.index.IndexWriterConfig.OpenMode;
    import org.apache.lucene.index.Term;
    import org.apache.lucene.queryParser.MultiFieldQueryParser;
    import org.apache.lucene.queryParser.QueryParser;
    import org.apache.lucene.search.IndexSearcher;
    import org.apache.lucene.search.PrefixQuery;
    import org.apache.lucene.search.Query;
    import org.apache.lucene.search.ScoreDoc;
    import org.apache.lucene.search.TermQuery;
    import org.apache.lucene.search.TopDocs;
    import org.apache.lucene.search.TopScoreDocCollector;
    import org.apache.lucene.search.WildcardQuery;
    import org.apache.lucene.search.highlight.Highlighter;
    import org.apache.lucene.search.highlight.QueryScorer;
    import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
    import org.apache.lucene.store.Directory;
    import org.apache.lucene.store.FSDirectory;
    import org.apache.lucene.util.Version;
    import org.wltea.analyzer.lucene.IKAnalyzer;
     
    import com.tray.bean.SerachResult;
    import com.tray.common.tools.DateFormater;
     
    public class LuceneSearch {
         
        private static String DISC_URL = "/home/indexData/data";
         
        static {
            String os = System.getProperty("os.name");  
            if(os.toLowerCase().startsWith("win")){  
                DISC_URL = "E:\indexData\data"; 
            }
            else{
                DISC_URL ="/home/indexData/data";
            }
        }
             
        //指定分词器 
        private Analyzer analyzer=new IKAnalyzer(); 
        private static Directory directory;
        //配置
        private static IndexWriterConfig iwConfig;
        //配置IndexWriter
        private static IndexWriter writer;  
        private static File indexFile = null;  
         
        private static Version version = Version.LUCENE_36;
         
        private final int PAPGESIZE=10;
     
        /**
         * 全量索引
         * @Author haoning
         */
        public void init() throws Exception {
             
            try {
                indexFile = new File(DISC_URL);
                if (!indexFile.exists()) {
                    indexFile.mkdir();
                }
                directory=FSDirectory.open(indexFile);  
                //配置IndexWriterConfig  
                iwConfig = new IndexWriterConfig(version,analyzer);  
                iwConfig.setOpenMode(OpenMode.CREATE_OR_APPEND);  
                    //创建写索引对象  
                writer = new IndexWriter(directory,iwConfig);   
            } catch (Exception e) {
            }
        }
         
        public void closeWriter(){
            try {
                writer.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
         
        public void commit(){
             
            try {
                writer.commit();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
         
        /**
         * 一个一个索引
         * @Author haoning
         */
        public void singleIndex(Document doc) throws Exception {
            writer.addDocument(doc);
        }
         
        /**
         * 一个跟新
         * @Author haoning
         */
        public void singleUpdate(Document doc) throws Exception {
            Term term = new Term("url", doc.get("url"));
            writer.updateDocument(term,doc);
        }
         
        /**
         * 全量索引
         * @Author haoning
         */
        public void fullIndex(Document[] documentes) throws Exception {
             
            writer.deleteAll();
            for (Document document : documentes) {
                writer.addDocument(document);
            }
            writer.commit();
        }
         
        /**
         * 根据id删除索引
         * @Author haoning
         */
        public void deleteIndex(Document document)throws Exception{
            Term term = new Term("url", document.get("url"));//url才是唯一标志
            writer.deleteDocuments(term);
            writer.commit();
        }
         
        /**
         * 根据id增量索引
         * @Author haoning
         */
        public void updateIndex(Document[] documentes) throws Exception{
            for (Document document : documentes) {
                Term term = new Term("url", document.get("url"));
                writer.updateDocument(term, document);
            }
            writer.commit();
        }
         
        /**
         * 直接查询
         * @Author haoning
         */
        public void simpleSearch(String filedStr,String queryStr,int page, int pageSize) throws Exception{
            File indexDir = new File(DISC_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);
            TopScoreDocCollector topCollector = TopScoreDocCollector.create(searcher.maxDoc(), false);
             
            Term term = new Term(filedStr, queryStr);
            Query query = new TermQuery(term);
            searcher.search(query, topCollector);
            ScoreDoc[] docs = topCollector.topDocs((page-1)*pageSize, pageSize).scoreDocs;
             
            printScoreDoc(docs, searcher);
        }
         
        /**
         * 高亮查询
         * @Author haoning
         */
        public Map<String, Object> highLightSearch(String filed,String keyWord,int curpage, int pageSize) throws Exception{
            List<SerachResult> list=new ArrayList<SerachResult>();
            Map<String,Object> map = new HashMap<String,Object>();
            if (curpage <= 0) {
                curpage = 1;
            }
            if (pageSize <= 0 || pageSize>20) {
                 pageSize = PAPGESIZE;
            }
            File indexDir = new File(DISC_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);
             
            int start = (curpage - 1) * pageSize;
             
            Analyzer analyzer = new IKAnalyzer(true);
            QueryParser queryParser = new QueryParser(Version.LUCENE_36, filed, analyzer);
            queryParser.setDefaultOperator(QueryParser.AND_OPERATOR);
            Query query = queryParser.parse(keyWord);
             
            int hm = start + pageSize;
            TopScoreDocCollector res = TopScoreDocCollector.create(hm, false);
            searcher.search(query, res);
             
            SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("<span style='color:red'>", "</span>");
            Highlighter highlighter = new Highlighter(simpleHTMLFormatter, new QueryScorer(query));
             
            long amount = res.getTotalHits();
            //long pages = (rowCount - 1) / pageSize + 1; //计算总页数
             
            map.put("amount",amount);//总共多少条记录
             
            TopDocs tds = res.topDocs(start, pageSize);
            ScoreDoc[] sd = tds.scoreDocs;
             
            for (int i = 0; i < sd.length; i++) {
                Document doc = searcher.doc(sd[i].doc);
                String temp=doc.get("name");
                //做高亮处理
                TokenStream ts = analyzer.tokenStream("name", new StringReader(temp));
                 
                SerachResult record=new SerachResult();
                String name = highlighter.getBestFragment(ts,temp); 
                String skydirverName=doc.get("skydirverName");
                String username=doc.get("username");
                String shareTime=doc.get("shareTime");
                String describ=doc.get("describ");
                String typeId=doc.get("typeId");
                String id=doc.get("id");
                String url=doc.get("url");
                 
                record.setName(name);
                record.setSkydriverName(skydirverName);
                record.setUsername(username);
                record.setShareTime(DateFormater.getFormatDate(shareTime,"yyyy-MM-dd HH:mm:ss"));
                record.setDescrib(describ);
                record.setTypeId(Integer.parseInt(typeId));
                record.setId(new BigInteger(id));
                record.setUrl(url);
                list.add(record);
                 
                /*System.out.println("name:"+name);
                System.out.println("skydirverName:"+skydirverName);
                System.out.println("username:"+username);
                System.out.println("shareTime:"+shareTime);
                System.out.println("describ:"+describ);
                System.out.println("typeId:"+typeId);
                System.out.println("id:"+id);
                System.out.println("url:"+url);*/
            }
            map.put("source",list);
            return map;
        }
         
        /**
         * 根据前缀查询
         * @Author haoning
         */
        public void prefixSearch(String filedStr,String queryStr) throws Exception{
            File indexDir = new File(DISC_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);
             
            Term term = new Term(filedStr, queryStr);
            Query query = new PrefixQuery(term);
             
            ScoreDoc[] docs = searcher.search(query, 3).scoreDocs;
            printScoreDoc(docs, searcher);
        }
         
        /**
         * 通配符查询
         * @Author haoning
         */
        public void wildcardSearch(String filedStr,String queryStr) throws Exception{
            File indexDir = new File(DISC_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);
             
            Term term = new Term(filedStr, queryStr);
            Query query = new WildcardQuery(term);
            ScoreDoc[] docs = searcher.search(query, 3).scoreDocs;
            printScoreDoc(docs, searcher);
        }
         
        /**
         * 分词查询
         * @Author haoning
         */
        public void analyzerSearch(String filedStr,String queryStr) throws Exception{
            File indexDir = new File(DISC_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);
             
            QueryParser queryParser = new QueryParser(version, filedStr, analyzer);
            Query query = queryParser.parse(queryStr);
             
            ScoreDoc[] docs = searcher.search(query, 3).scoreDocs;
            printScoreDoc(docs, searcher);
        }
         
        /**
         * 多属性分词查询
         * @Author haoning
         */
        public void multiAnalyzerSearch(String[] filedStr,String queryStr) throws Exception{
            File indexDir = new File(DISC_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);
            QueryParser queryParser = new MultiFieldQueryParser(version, filedStr, analyzer);
            Query query = queryParser.parse(queryStr);
             
            ScoreDoc[] docs = searcher.search(query, 3).scoreDocs;
            printScoreDoc(docs, searcher);
        }
         
        public void printScoreDoc(ScoreDoc[] docs,IndexSearcher searcher)throws Exception{
            for (int i = 0; i < docs.length; i++) {
                List<Fieldable> list = searcher.doc(docs[i].doc).getFields();
                for (Fieldable fieldable : list) {
                    String fieldName = fieldable.name();
                    String fieldValue = fieldable.stringValue();
                    System.out.println(fieldName+" : "+fieldValue);
                }
            }
        }
    }
    

      

    注意由于去转盘网(http://www.quzhuanpan.com)是部署到linux上的,所以DISC_URL可以更具系统变换,我是通过url来判定索引文件是否唯一的,你可以更具id来判断,具体情况具体对待吧。
    package com.tray.indexData;
     
    import java.sql.SQLException;
    import org.apache.lucene.document.Document;
    import org.apache.lucene.document.Field;
    import com.mysql.jdbc.Connection;
    import com.mysql.jdbc.ResultSet;
    import com.mysql.jdbc.Statement;
     
    public class IndexFile {
         
         private static Connection conn = null;     
         private static Statement stmt = null;  
         private final int NUM=500000;
         private LuceneSearch ls;
         private long count=0;
          
         public ResultSet deal6SourceTable(String tableName) throws SQLException{
               String sql = "SELECT distinct `NAME`,SKYDRIVER_NAME,USERNAME,SHARE_TIME,DESCRIB,TYPE_ID,ID,URL FROM "+tableName+" where STATUS=1 and TYPE_ID !='-1' and (TYPE_NAME is null or TYPE_NAME!=1) limit "+NUM;
               //System.out.println(sql);
               ResultSet rs = (ResultSet) stmt.executeQuery(sql);
               return rs;
         }
          
         public void update6SourceTable(String tableName) throws SQLException{
               Statement st = (Statement) conn.createStatement();
               String sql = "update "+tableName+" set TYPE_NAME=1 where STATUS=1 and TYPE_ID !='-1' and (TYPE_NAME is null or TYPE_NAME!=1) limit "+NUM;
               //System.out.println("update"+sql);
                try {
                    st.executeUpdate(sql);
                } catch (SQLException e) {
                    e.printStackTrace();
                }
         }
          
         public void indexInit(){//数据库+lcene初始化
            conn = (Connection) JdbcUtil.getConnection();     
            if(conn == null) {     
                try {
                    throw new Exception("数据库连接失败!");
                } catch (Exception e) {
                    e.printStackTrace();
                }     
            }
            ls=new LuceneSearch();
            try {
                ls.init();
            } catch (Exception e2) {
                e2.printStackTrace();
            }
         }
          
         public void indexEnd(){//数据库+lcene关闭
              
             ls.closeWriter();
             try {
                    conn.close();//关闭数据库
                 } catch (SQLException e) {
                    e.printStackTrace();
              }
         }
          
         public void Index6Data() throws SQLException{   
                try {
                    stmt = (Statement) conn.createStatement();
                } catch (SQLException e1) {
                    e1.printStackTrace();
                }
                 
                ResultSet r1=null;
                ResultSet r2=null;
                ResultSet r3=null;
                ResultSet r4=null;
                ResultSet r5=null;
                ResultSet r6=null;
                 
                boolean stop=false;
                do{
                     r1=deal6SourceTable("film_and_tv_info");
                     stop=this.createIndex(r1,ls,"1");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引 
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     //System.out.println("stop"+stop);
                     
                }while(!stop);
                
                stop=false;
                do{
                     r2=deal6SourceTable("music_and_mv_info");
                     stop=this.createIndex(r2,ls,"2");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                 
                stop=false;
                do{
                     r3=deal6SourceTable("e_book_info");
                     stop=this.createIndex(r3,ls,"3");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                 
                stop=false;
                do{
                     r4=deal6SourceTable("bt_file_info");
                     stop=this.createIndex(r4,ls,"4");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                 
                stop=false;
                do{
                     r5=deal6SourceTable("characteristic_software_info");
                     stop=this.createIndex(r5,ls,"5");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                 
                stop=false;
                do{
                     r6=deal6SourceTable("source_code_info");
                     stop=this.createIndex(r6,ls,"6");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                stop=false;
                
         }
          
         public ResultSet deal2Share(String tableName) throws SQLException{
            String sql = "SELECT  distinct NAME,SKYDRIVER_NAME,USERNAME,SHARE_TIME,DESCRIB,TYPE_ID,ID,SHORTURL from "+tableName+" where STATUS=1  and FS_ID ='1' limit "+NUM; //利用FS_ID这个字段,没什么用处 
            ResultSet rs = (ResultSet) stmt.executeQuery(sql);
            return rs;
        }
         
        public ResultSet deal3Share(String tableName) throws SQLException{
            String sql = "SELECT  distinct title,channel,uid,ctime,description,port,id,shorturl from "+tableName+" where name ='1' limit "+NUM;  
            ResultSet rs = (ResultSet) stmt.executeQuery(sql);
            return rs;
        }
         
        public void Index3Data() throws SQLException{
                try {
                    stmt = (Statement) conn.createStatement();
                } catch (SQLException e1) {
                    e1.printStackTrace();
                }
                 
                ResultSet r1=null;
                ResultSet r2=null;
                ResultSet r3=null;
                 
                boolean stop=false;
                do{
                     r1=deal2Share("share1");
                     stop=this.createIndex(r1,ls,"7");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     //System.out.println("stop"+stop);
                     
                }while(!stop);
                
                stop=false;
                do{
                     r2=deal2Share("share2");
                     stop=this.createIndex(r2,ls,"8");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                 
                stop=false;
                do{
                     r3=deal3Share("share3");
                     stop=this.createIndex(r3,ls,"9");   //给数据库创建索引,此处执行一次,不要每次运行都创建索引,以后数据有更新可以后台调用更新索引  
                     if(!stop){
                         ls.commit();//加个判断条件
                     }
                     
                }while(!stop);
                stop=false;
            }
         
            public void update2ShareTable(String tableName) throws SQLException{
                Statement st = (Statement) conn.createStatement();
               String sql = "update "+tableName+" set FS_ID=0 where STATUS=1  and FS_ID ='1' limit "+NUM; //利用FS_ID这个字段,没什么用处 
               //System.out.println("update"+sql);
                try {
                    st.executeUpdate(sql);
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
             
            public void update3ShareTable(String tableName) throws SQLException{
                Statement st = (Statement) conn.createStatement();
               String sql = "update "+tableName+" set name=0 where name ='1' limit "+NUM;  
               //System.out.println("update"+sql);
                try {
                    st.executeUpdate(sql);
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
                
            public boolean createIndex(ResultSet rs,LuceneSearch ls,String mark) {
                try {
                    String tableName=null;
                    if(mark.equals("1")){
                        tableName="film_and_tv_info";
                    }
                    if(mark.equals("2")){
                        tableName="music_and_mv_info";
                    }
                    if(mark.equals("3")){
                        tableName="e_book_info";
                    }
                    if(mark.equals("4")){
                        tableName="bt_file_info";
                    }
                    if(mark.equals("5")){
                        tableName="characteristic_software_info";
                    }
                    if(mark.equals("6")){
                        tableName="source_code_info";
                    }
                    if(mark.equals("7")){
                        tableName="share1";
                    }
                    if(mark.equals("8")){
                        tableName="share2";
                    }
                    if(mark.equals("9")){
                        tableName="share3";
                    }
     
                    boolean isNull=rs.next();
                    //System.out.println("hehe"+isNull);
                    if(isNull==false){
                        return true;//处理完毕
                    }
                    while(isNull){
                        if(Integer.parseInt(mark)>=1&&Integer.parseInt(mark)<=8){
                            Document doc = new Document();  
                            //System.out.println("name"+rs.getString("NAME"));        
                            Field name = new Field("name",rs.getString("NAME"),Field.Store.YES,Field.Index.ANALYZED);
                            String skName=rs.getString("SKYDRIVER_NAME");
                            if(skName==null){
                                skName="百度";
                            }
                            Field skydirverName = new Field("skydirverName",skName, Field.Store.YES,Field.Index.NOT_ANALYZED);
                            Field username = new Field("username",rs.getString("USERNAME"),Field.Store.YES, Field.Index.ANALYZED);    
                            Field shareTime = new Field("shareTime",rs.getString("SHARE_TIME"), Field.Store.YES,Field.Index.NOT_ANALYZED);
                            String desb=rs.getString("DESCRIB");
                            if(desb==null){
                                desb="-1";
                            }
                            Field describ = new Field("describ",desb,Field.Store.NO,Field.Index.NOT_ANALYZED);     
                            Field typeId = new Field("typeId",rs.getString("TYPE_ID"), Field.Store.YES,Field.Index.NOT_ANALYZED); 
                            Field id = new Field("id",rs.getString("ID"),Field.Store.YES,Field.Index.NOT_ANALYZED);
                            Field url =null;
                            if(Integer.parseInt(mark)>=7&&Integer.parseInt(mark)<=8){
                                url = new Field("url",rs.getString("SHORTURL"), Field.Store.YES,Field.Index.ANALYZED); 
                            }
                            else{
                                url = new Field("url",rs.getString("URL"), Field.Store.YES,Field.Index.ANALYZED);  
                            }
                            doc.add(name);
                            doc.add(skydirverName);
                            doc.add(username);
                            doc.add(shareTime);
                            doc.add(describ);
                            doc.add(typeId);
                            doc.add(id);
                            doc.add(url);
                            ls.singleUpdate(doc);//用跟新更为合适     
                            isNull=rs.next();
                        }
                        else{
                            Document doc = new Document();  
                            //System.out.println("title"+rs.getString("title"));        
                            Field name = new Field("name",rs.getString("title"),Field.Store.YES,Field.Index.ANALYZED);
                            String skName=rs.getString("channel");
                            Field skydirverName = new Field("skydirverName",skName, Field.Store.YES,Field.Index.NOT_ANALYZED);
                            Field username = new Field("username",rs.getString("uid"),Field.Store.YES, Field.Index.ANALYZED);     
                            Field shareTime = new Field("shareTime",rs.getString("ctime"), Field.Store.YES,Field.Index.NOT_ANALYZED);
                            String desb=rs.getString("description");
                            if(desb==null){
                                desb="-1";
                            }
                            Field describ = new Field("describ",desb,Field.Store.NO,Field.Index.NOT_ANALYZED);     
                            Field typeId = new Field("typeId",rs.getString("port"), Field.Store.YES,Field.Index.NOT_ANALYZED);
                            Field id = new Field("id",rs.getString("id"),Field.Store.YES,Field.Index.NOT_ANALYZED);    
                            Field url = new Field("url",rs.getString("shorturl"), Field.Store.YES,Field.Index.ANALYZED);  
                             
                            doc.add(name);
                            doc.add(skydirverName);
                            doc.add(username);
                            doc.add(shareTime);
                            doc.add(describ);
                            doc.add(typeId);
                            doc.add(id);
                            doc.add(url);
                            ls.singleUpdate(doc);//用跟新更为合适     
                            isNull=rs.next();
                        }
                        count=count+1;
                    }
                    if(Integer.parseInt(mark)>=1&&Integer.parseInt(mark)<=6){
                        update6SourceTable(tableName);//处理完成后做标志
                    }
                    else if(Integer.parseInt(mark)>=7&&Integer.parseInt(mark)<=8){
                        update2ShareTable(tableName);//处理完成后做标志
                    }
                    else{
                        update3ShareTable(tableName);//处理完成后做标志
                    }
                    System.out.println("Has index "+count+"条数据,数据来自表"+tableName);
                     
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return false;
            }
    }
    

      

    数据库之类的请不要关心,看思路即可,你如果需要换成你的即可,这里就不多说了。

    看最后的部分:

    pack
    age com.tray.indexData;
     
    import java.sql.SQLException;
     
     
     
    public class Application {
         
        public static void main(String[] args){
            /*IndexFile indexFile=new IndexFile();
            indexFile.indexInit();
            try {
                indexFile.Index6Data();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            indexFile.indexEnd();*/
             
            IndexFile indexFile1=new IndexFile();
            indexFile1.indexInit();
            try {
                indexFile1.Index3Data();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            indexFile1.indexEnd();
             
            LuceneSearch lch=new LuceneSearch();
            try {
                long a = System.currentTimeMillis();
                lch.highLightSearch("name", "flv", 1,3);
                long b = System.currentTimeMillis();
                long c = b - a;
                System.out.println("[高级检索花费时间:" + c + "毫秒]");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    

      

    你可以在一个applicationic程序中开始索引,也可以写个定时器来定时索引,看需求。以上代码是楼主幸苦的作品,转载请不要改动,本人确保代码完全可用。
  • 相关阅读:
    激活函数
    C++ 三大属性之多态
    C++ 编译运行过程
    优化方法
    目标检测中的IOU
    pytorch 单机多gpu运行
    WSAEventSelect网络模型
    根据数组中的索引删除对应的值
    从以下几点提高服务器并发量
    std::function
  • 原文地址:https://www.cnblogs.com/huangxie/p/5500285.html
Copyright © 2011-2022 走看看