资讯专栏INFORMATION COLUMN

java+lucene中文分词,搜索引擎搜词剖析

wind3110991 / 1132人阅读

摘要:看最后的部分高级检索花费时间毫秒你可以在一个程序中开始索引,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。

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/sou...

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/sear...

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:indexDatadata"; 
        }
        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 highLightSearch(String filed,String keyWord,int curpage, int pageSize) throws Exception{
        List list=new ArrayList();
        Map map = new HashMap();
        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("", "");
        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 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:

package 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。本人建个qq群,欢迎大家一起交流技术, 群号:512245829 喜欢微博的朋友关注:转盘娱乐即可

文章版权归作者所有,未经允许请勿转载,若此文章存在违规行为,您可以联系管理员删除。

转载请注明本文地址:https://www.ucloud.cn/yun/65942.html

相关文章

  • 推荐十款java开源中文分词组件

    摘要:最初,它是以开源项目为应用主体的,结合词典分词和文法分析算法的中文分词组件。填补了国内中文分词方面开源组件的空白,致力于此并希翼成为互联网网站首选的中文分词开源组件。中文分词追求分词的高效率和用户良好体验。 1:Elasticsearch的开源中文分词器 IK Analysis(Star:2471) IK中文分词器在Elasticsearch上的使用。原生IK中文分词是从文件系统中读取...

    masturbator 评论0 收藏0
  • Lucene系列(一)快速入门

    摘要:系列文章系列一快速入门系列二使用及索引文档的基本操作系列三查询及高亮是什么在维基百科的定义是一套用于全文检索和搜索的开放源代码程序库,由软件基金会支持和提供。全面准确和快速是衡量全文检索系统的关键指标。结果列表有相关度排序。 系列文章: Lucene系列(一)快速入门 Lucene系列(二)luke使用及索引文档的基本操作 Lucene系列(三)查询及高亮 Lucene是什么? Luc...

    骞讳护 评论0 收藏0

发表评论

0条评论

wind3110991

|高级讲师

TA的文章

阅读更多
最新活动
阅读需要支付1元查看
<