[Index code]



import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.Date;



import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.document.DateTools;

import org.apache.lucene.document.Document;

import org.apache.lucene.document.Field;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.SimpleFSDirectory;

import org.apache.lucene.util.Version;



public class Indexer

{

   public static void main(String[] args) throws IOException

   {

  String Idx = "C:\\test\\Idx";

  String dateDir = "C:\\test\\Data";

  IndexWriter indexWriter = null;



  Directory dir = new SimpleFSDirectory(new File(Idx));

  indexWriter = new IndexWriter(dir,new StandardAnalyzer(Version.LUCENE_30),true,IndexWriter.MaxFieldLength.UNLIMITED);



  File[] files = new File(dateDir).listFiles();



  for (int i = 0; i < files.length; i++)

  {

  Document doc = new Document();

  doc.add(new Field("contents", new FileReader(files[i])));

  doc.add(new Field("filename", files[i].getName(), Field.Store.YES, Field.Index.NOT_ANALYZED));

  doc.add(new Field("indexDate",DateTools.dateToString(new Date(), DateTools.Resolution.DAY),Field.Store.YES,Field.Index.NOT_ANALYZED));

  indexWriter.addDocument(doc);

  }

  System.out.println("numDocs"+indexWriter.numDocs());

  indexWriter.close();



    }



}

[END]



[Searcher code]



import java.io.File;

import java.io.IOException;



import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.document.Document;

import org.apache.lucene.queryParser.ParseException;

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.TopDocs;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.SimpleFSDirectory;

import org.apache.lucene.util.Version;



public class Searcher

{

    public static void main(String[] args) throws IOException, ParseException

    {

   String Idx = "C:\\test\\Idx";

   Directory dir = new SimpleFSDirectory(new File(Idx));

   IndexSearcher indexSearch = new IndexSearcher(dir);



   QueryParser queryParser = new QueryParser(Version.LUCENE_30, "contents", new StandardAnalyzer(Version.LUCENE_30));

   Query query = queryParser.parse("鼻涕"); //key Query term

   TopDocs hits = indexSearch.search(query, 500);

   System.out.println("找到"+hits.totalHits+"個");

   for (int i = 0; i < hits.scoreDocs.length; i++)

   {

   ScoreDoc sdoc = hits.scoreDocs[i];

   Document doc = indexSearch.doc(sdoc.doc);

   System.out.println(doc.get("filename"));

   }

   indexSearch.close();

    }

}

[END]

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.StringReader;



import org.apache.lucene.analysis.TokenStream;

import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.document.Document;

import org.apache.lucene.queryParser.ParseException;

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.TopDocs;

import org.apache.lucene.search.highlight.Highlighter;

import org.apache.lucene.search.highlight.InvalidTokenOffsetsException;

import org.apache.lucene.search.highlight.QueryScorer;

import org.apache.lucene.search.highlight.Scorer;

import org.apache.lucene.search.highlight.SimpleHTMLFormatter;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.SimpleFSDirectory;

import org.apache.lucene.util.Version;



public class Searcher {

	public static void main(String[] args) throws IOException, ParseException, InvalidTokenOffsetsException {

		String Idx = "C:\\test\\Idx";

		String dataDir = "C:\\test\\Data";

		Directory dir = new SimpleFSDirectory(new File(Idx));

		IndexSearcher indexSearch = new IndexSearcher(dir);



		QueryParser queryParser = new QueryParser(Version.LUCENE_30,

				"contents", new StandardAnalyzer(Version.LUCENE_30));

		Query query = queryParser.parse("鼻涕"); // key Query term

		TopDocs hits = indexSearch.search(query, 500);

		System.out.println("找到" + hits.totalHits + "個");

		for (int i = 0; i < hits.scoreDocs.length; i++) {

			ScoreDoc sdoc = hits.scoreDocs[i];

			Document doc = indexSearch.doc(sdoc.doc);

			System.out.println(doc.get("filename"));

            Scorer scorer = new QueryScorer(query);

            SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("", "");

            Highlighter highlighter = new Highlighter(simpleHTMLFormatter, scorer);

            String content = readFileAsString(dataDir+File.separator+doc.get("filename"));

            TokenStream tokenStream = queryParser.getAnalyzer().tokenStream(

                    "contents", new StringReader(content));



            String fragment = highlighter.getBestFragment(tokenStream, content);

            System.out.println(fragment != null ? fragment : content);



		}

		indexSearch.close();

	}

	private static String readFileAsString(String filePath) throws java.io.IOException{

	    byte[] buffer = new byte[(int) new File(filePath).length()];

	    BufferedInputStream f = null;

	    try {

	        f = new BufferedInputStream(new FileInputStream(filePath));

	        f.read(buffer);

	    } finally {

	        if (f != null) try { f.close(); } catch (IOException ignored) { }

	    }

	    return new String(buffer);

	}

}