package com.javacodegeeks.lucene; import java.io.File;import java.io.FileReader;import java.io.IOException; import org.apache.lucene.analysis.SimpleAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.store.FSDirectory; public class SimpleFileIndexer {        public static void main(String[] args) throws Exception {    File indexDir = new File("C:/index/");  File dataDir = new File("C:/programs/eclipse/workspace/");  String suffix = "java";    SimpleFileIndexer indexer = new SimpleFileIndexer();    int numIndex = indexer.index(indexDir, dataDir, suffix);    System.out.println("Total files indexed " + numIndex);      }        private int index(File indexDir, File dataDir, String suffix) throws Exception {    IndexWriter indexWriter = new IndexWriter(    FSDirectory.open(indexDir),     new SimpleAnalyzer(),    true,    IndexWriter.MaxFieldLength.LIMITED);  indexWriter.setUseCompoundFile(false);    indexDirectory(indexWriter, dataDir, suffix);    int numIndexed = indexWriter.maxDoc();  indexWriter.optimize();  indexWriter.close();    return numIndexed;      }        private void indexDirectory(IndexWriter indexWriter, File dataDir,      String suffix) throws IOException {   File[] files = dataDir.listFiles();  for (int i = 0; i < files.length; i++) {File f = files[i];if (f.isDirectory()) {    indexDirectory(indexWriter, f, suffix);}else {    indexFileWithIndexWriter(indexWriter, f, suffix);}  }     }        private void indexFileWithIndexWriter(IndexWriter indexWriter, File f, String suffix) throws IOException {   if (f.isHidden() || f.isDirectory() || !f.canRead() || !f.exists()) {return;  }  if (suffix!=null && !f.getName().endsWith(suffix)) {return;  }  System.out.println("Indexing file " + f.getCanonicalPath());    Document doc = new Document();  doc.add(new Field("contents", new FileReader(f)));    doc.add(new Field("filename", f.getCanonicalPath(),      Field.Store.YES, Field.Index.ANALYZED));    indexWriter.addDocument(doc);     } }

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