lucene创设索引

lucene创建索引：

1. import?java.io.File;
2. import?java.io.IOException;
3. import?org.apache.lucene.analysis.Analyzer;
4. import?org.apache.lucene.analysis.standard.StandardAnalyzer;
5. import?org.apache.lucene.document.Document;
6. import?org.apache.lucene.document.Field;
7. import?org.apache.lucene.index.CorruptIndexException;
8. import?org.apache.lucene.index.IndexWriter;
9. import?org.apache.lucene.index.IndexWriterConfig;
10. import?org.apache.lucene.index.IndexWriterConfig.OpenMode;
11. import?org.apache.lucene.store.Directory;
12. import?org.apache.lucene.store.FSDirectory;
13. import?org.apache.lucene.store.LockObtainFailedException;
14. import?org.apache.lucene.util.Version;
15. public?class?LuceneTest?{
16. ????String?docsPath?=?null;???//文件位置
17. ????String?indexPath?=null;???//索引位置
18. ????public?static?void?main(String[]?args)?{
19. ????????LuceneTest?test?=?new?LuceneTest();
20. ????????try?{
21. ????????????test.index();
22. ????????}?catch?(CorruptIndexException?e)?{
23. ????????????//?TODO?Auto-generated?catch?block
24. ????????????e.printStackTrace();
25. ????????}?catch?(LockObtainFailedException?e)?{
26. ????????????//?TODO?Auto-generated?catch?block
27. ????????????e.printStackTrace();
28. ????????}?catch?(IOException?e)?{
29. ????????????//?TODO?Auto-generated?catch?block
30. ????????????e.printStackTrace();
31. ????????}
32. ????}
33. ????/**
34. ?????*?先创立索引
35. ?????*?@throws?IOException
36. ?????*?@throws?LockObtainFailedException
37. ?????*?@throws?CorruptIndexException
38. ?????*/
39. ????public?void?index()?throws?CorruptIndexException,?LockObtainFailedException,?IOException
40. ????{
41. ????????docsPath=”F:\\Search?engine\\搜索引擎\\lucene-3.1.0-src\\lucene-3.1.0\\contrib\\analyzers\\common\\readm.txt”;
42. ????????indexPath=”D:\\mywork\\LuceneTest\\lucenedic”;
43. ????????if(docsPath==null)
44. ????????{
45. ????????????System.err.println(“docsPath为空”);
46. ????????????System.exit(1);
47. ????????}
48. ????????File?docDir?=?new?File(docsPath);
49. ????????Analyzer?analyzer?=?new?StandardAnalyzer(Version.LUCENE_31);
50. ????????Directory?dir?=?FSDirectory.open(new?File(indexPath));
51. ????????IndexWriterConfig?iwc?=?new?IndexWriterConfig(Version.LUCENE_31,?analyzer);
52. ????????/*IndexWriter?indexWriter1?=?new?IndexWriter(dir,new?IndexWriterConfig(Version.LUCENE_31,
53. ????????????????????????????????????new?WhitespaceAnalyzer(Version.LUCENE_31)));*/
54. ????????iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
55. ????????IndexWriter?indexWriter?=?new?IndexWriter(dir,iwc);
56. ????????Document?doc?=?new?Document();
57. ????????Field?pathField?=?new?Field(“path”,docDir.getPath(),Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS);
58. ????????pathField.setOmitTermFreqAndPositions(true);
59. ????????doc.add(pathField);
60. ????????indexWriter.addDocument(doc);
61. ????????indexWriter.close();
62. ????}
63. }