import?java.io.File;
import?java.io.FileReader;
import?java.io.IOException;
import?java.io.Reader;
import?java.util.Date;
import?java.util.List;

import?org.apache.lucene.analysis.Analyzer;
import?org.apache.lucene.analysis.core.SimpleAnalyzer;
import?org.apache.lucene.analysis.standard.StandardAnalyzer;
import?org.apache.lucene.codecs.TermVectorsReader;
import?org.apache.lucene.document.Document;
import?org.apache.lucene.document.Field;
import?org.apache.lucene.document.Field.Store;
import?org.apache.lucene.index.AtomicReader;
import?org.apache.lucene.index.DirectoryReader;
import?org.apache.lucene.index.Fields;
import?org.apache.lucene.index.IndexReader;
import?org.apache.lucene.index.IndexReaderContext;
import?org.apache.lucene.index.IndexWriter;
import?org.apache.lucene.index.IndexWriterConfig;
import?org.apache.lucene.index.SlowCompositeReaderWrapper;
import?org.apache.lucene.index.Term;
import?org.apache.lucene.index.TermContext;
import?org.apache.lucene.index.TermState;
import?org.apache.lucene.index.Terms;
import?org.apache.lucene.index.TermsEnum;
import?org.apache.lucene.queryparser.classic.ParseException;
import?org.apache.lucene.queryparser.classic.QueryParser;
import?org.apache.lucene.search.BooleanClause;
import?org.apache.lucene.search.BooleanQuery;
import?org.apache.lucene.search.IndexSearcher;
import?org.apache.lucene.search.Query;
import?org.apache.lucene.search.ScoreDoc;
import?org.apache.lucene.search.TermQuery;
import?org.apache.lucene.search.TermStatistics;
import?org.apache.lucene.search.TopScoreDocCollector;
import?org.apache.lucene.store.Directory;
import?org.apache.lucene.store.FSDirectory;
import?org.apache.lucene.util.Version;


public?class?TestIndexReadWrite?{

	/**
	?*?@param?args
	?*?@throws?IOException?
	
	?*/
	
	
	public?static?void?buildIndex（String?fileDirString?indexDir）?throws?IOException{
		
		//fileDir?is?the?directory?that?contains?the?text?files?to?be?indexed
		//indexDir?is?the?directory?that?hosts?Lucene‘s?index?files
		
		???File???textFile??=?new?File（fileDir）;
???		???File???indexFile?=?new?File（indexDir）;
???		???Directory?dir=FSDirectory.open（indexFile）;
		???	????
		???
		???//Analyzer?luceneAnalyzer?=?new?StandardAnalyzer（Version.LUCENE_42）;
???		???Analyzer?luceneAnalyzer?=?new?SimpleAnalyzer（Version.LUCENE_42）;
		???		???		???
		???IndexWriterConfig?iwc=new?IndexWriterConfig（Version.LUCENE_42luceneAnalyzer）;
		???IndexWriter?indexWriter?=?new?IndexWriter（diriwc）;
		???		

		???
		???File[]?textFiles??=?textFile.listFiles（）;
		???long?startTime?=?new?Date（）.getTime（）;

		???//Add?documents?to?the?index
		???for（int?i?=?0;?i?			???
			???
		???
		?????if（textFiles[i].isFile（）&&?textFiles[i].getName（）.endsWith（“.txt“））{
		???????System.out.println（“File?“?+?textFiles[i].getCanonicalPath（）?
		??????????????+?“?is?being?indexed“）;
		???????Reader?textReader?=?new?FileReader（textFiles[i]）;
		?