Lucene建立索引的例子

/** * @author tonybo2006 * @version 2008/11/14 */ public class TextFileIndexer { private String dataFilePath = null; private String indexFilePath = null; private File dataFile = null; /** * @param dataFilePath */ public TextFileIndexer(String dataFilePath, String indexFilePath) { this.dataFilePath = dataFilePath; this.dataFile = new File(dataFilePath); this.indexFilePath = indexFilePath; } /** * @return StandardAnalyzer */ private Analyzer getAnalyzer() { return new StandardAnalyzer(); } /** * @return doc Document */ private IndexWriter getDocument(IndexWriter indexWriter) { try { if (dataFile.isDirectory()) { File[] files = dataFile.listFiles(); for (int i = 0; i < files.length; i++) { Document doc = new Document(); System.out.println("File " + files[i].getCanonicalPath() + "正在被索引...."); // file path doc.add(new Field("path", files[i].getAbsolutePath(),Field.Store.YES, Field.Index.NOT_ANALYZED)); // file modified time doc.add(new Field("modified", DateTools.timeToString(files[i].lastModified(), DateTools.Resolution.MINUTE), Field.Store.YES,Field.Index.NOT_ANALYZED)); // file content doc.add(new Field("contents", new FileReader(files[i]))); indexWriter.addDocument(doc); } } else { Document doc = new Document(); System.out.println(dataFile.getCanonicalPath() + "正在被索引...."); // file path doc.add(new Field("path", dataFilePath, Field.Store.YES,Field.Index.NOT_ANALYZED)); // file modified time doc.add(new Field("modified", DateTools.timeToString(dataFile.lastModified(), DateTools.Resolution.MINUTE),Field.Store.YES, Field.Index.NOT_ANALYZED)); // file content doc.add(new Field("contents", new FileReader(new File(dataFilePath)))); indexWriter.addDocument(doc); } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return indexWriter; } /** * 建立索引。 */ public void createIndex() { try { IndexWriter indexWriter = new IndexWriter(indexFilePath,getAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED); long startTime = new Date().getTime(); System.out.println("开始索引……"); getDocument(indexWriter); // 测试一下索引的时间 long endTime = new Date().getTime(); System.out.println("索引完成。花费了" + (endTime - startTime) + " 毫秒来把文档增加到索引里面去!" + indexFilePath); indexWriter.optimize(); indexWriter.close(); } catch (CorruptIndexException e) { e.printStackTrace(); } catch (LockObtainFailedException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * test */ public static void main(String[] args) throws Exception { String dataFilePath = "D:\\s";//数据文件路径 String indexFilePath = "D:\\index";//索引文件路径 TextFileIndexer textFileIndexer = new TextFileIndexer(dataFilePath,indexFilePath); textFileIndexer.createIndex(); } }