Lucene自带示范精简

Lucene自带示例精简

Lucene自带示例精简，只留下了主要代码。以备查看
对文件夹生成索引

package?zhch.illq.lucene;????import?java.io.BufferedReader;??import?java.io.File;??import?java.io.IOException;??import?java.io.InputStreamReader;????import?net.paoding.analysis.analyzer.PaodingAnalyzer;????import?org.apache.lucene.analysis.Analyzer;??import?org.apache.lucene.analysis.standard.StandardAnalyzer;??import?org.apache.lucene.document.Document;??import?org.apache.lucene.index.IndexReader;??import?org.apache.lucene.queryParser.QueryParser;??import?org.apache.lucene.search.IndexSearcher;??import?org.apache.lucene.search.Query;??import?org.apache.lucene.search.ScoreDoc;??import?org.apache.lucene.search.Searcher;??import?org.apache.lucene.search.TopScoreDocCollector;??import?org.apache.lucene.store.FSDirectory;??import?org.apache.lucene.util.Version;????public?class?LuceneSearch?{????????/**?Simple?command-line?based?search?demo.?*/??????public?static?void?main(String[]?args)?throws?Exception?{????????????String?index?=?"d:\\temp\\index";??????????String?field?=?"contents";??????????String?queries?=?null;??????????boolean?raw?=?false;??????????//?要显示条数??????????int?hitsPerPage?=?10;????????????//?searching,?so?read-only=true??????????IndexReader?reader?=?IndexReader.open(FSDirectory.open(new?File(index)),?true);?//?only????????????Searcher?searcher?=?new?IndexSearcher(reader);??????????Analyzer?standardAnalyzer?=?new?StandardAnalyzer(Version.LUCENE_CURRENT);??????????//?如果是索引中文内容，可以使用Paoding中文分词器??????????Analyzer?analyzer?=?new?PaodingAnalyzer();????????????BufferedReader?in?=?new?BufferedReader(new?InputStreamReader(System.in));??????????QueryParser?parser?=?new?QueryParser(field,?analyzer);??????????while?(true)?{??????????????if?(queries?==?null)?//?prompt?the?user??????????????????System.out.println("Enter?query:?");????????????????String?line?=?in.readLine();????????????????if?(line?==?null?||?line.length()?==?-1)??????????????????break;????????????????line?=?line.trim();??????????????if?(line.length()?==?0)??????????????????break;????????????????Query?query?=?parser.parse(line);??????????????System.out.println("Searching?for:?"?+?query.toString(field));????????????????doPagingSearch(in,?searcher,?query,?hitsPerPage,?raw,?queries?==?null);??????????}??????????reader.close();??????}????????public?static?void?doPagingSearch(BufferedReader?in,?Searcher?searcher,?Query?query,?int?hitsPerPage,?boolean?raw,??????????????boolean?interactive)?throws?IOException?{????????????TopScoreDocCollector?collector?=?TopScoreDocCollector.create(hitsPerPage,?false);??????????searcher.search(query,?collector);??????????ScoreDoc[]?hits?=?collector.topDocs().scoreDocs;????????????int?end,?numTotalHits?=?collector.getTotalHits();??????????System.out.println(numTotalHits?+?"?total?matching?documents");????????????int?start?=?0;????????????end?=?Math.min(hits.length,?start?+?hitsPerPage);????????????for?(int?i?=?start;?i?<?end;?i++)?{??????????????Document?doc?=?searcher.doc(hits[i].doc);??????????????String?path?=?doc.get("path");??????????????if?(path?!=?null)?{??????????????????System.out.println((i?+?1)?+?".?"?+?path);??????????????????System.out.println("???modified:?"?+?doc.get("modified"));????????????????}?else?{??????????????????System.out.println((i?+?1)?+?".?"?+?"No?path?for?this?document");??????????????}????????????}????????}????}?