Notes when using javase2.4 (changes to the new version)

Lucene2.4 has been modified in many places, probably to welcome the coming of lucene3.0.
The previously written blog (http://blog.csdn.net/kunshan_shenbin/archive/2008/06/02/2503388.aspx) passed the test in version 2.3.2, but must be modified under version 2.4.

The Code is as follows:

Indexer. Java

1. Package com. Lucene. index;
3. Import java. Io. file;
4. Import java. Io. filereader;
5. Import java. Io. ioexception;
7. Import org. Apache. Lucene. analysis. Standard. standardanalyzer;
8. Import org.apache.e.doc ument. Document;
9. Import org.apache.e.doc ument. field;
10. Import org. Apache. Lucene. Index. indexwriter;
12. Public class indexer {
14. Public static void main (string [] ARGs) throws ioexception {
16. File indexdir = new file ("C: // test // Index ");
17. File datadir = new file ("C: // test // data ");
19. Int numindexed = index (indexdir, datadir );
21. System. Out. println (numindexed );
22. }
24. Public static int index (File indexdir, file datadir) throws ioexception {
26. If (! Indexdir. exists () |! Datadir. isdirectory ()){
27. Throw new ioexception ();
28. }
30. Indexwriter writer = new indexwriter (indexdir, new standardanalyzer (), true, Indexwriter. maxfieldlength. Limited);
31. Writer. setusecompoundfile (false );
33. Indexdirectory (writer, datadir );
35. Int numindexed =Writer. maxdoc ();
36. Writer. Optimize ();
37. Writer. Close ();
38. Return numindexed;
39. }
41. Private Static void indexdirectory (indexwriter writer, file DIR)
42. Throws ioexception {
44. File [] files = dir. listfiles ();
46. For (INT I = 0; I <files. length; I ++ ){
47. File F = files [I];
48. If (F. isdirectory ()){
49. Indexdirectory (writer, F );
50. } Else if (F. getname (). tolowercase (). endswith (". txt ")){
51. Indexfile (writer, F );
52. }
53. }
54. }
56. Public static void indexfile (indexwriter writer, file F) throws ioexception {
58. If (F. ishidden () |! F. exists () |! F. Canread ()){
59. Return;
60. }
62. System. Out. println ("Indexing" + F. GetCanonicalPath ());
64. Document Doc = new document ();
65. Doc. Add (new field ("FILENAME", F. GetCanonicalPath (), field. Store. Yes,
66. Field. Index. not_analyzed));
67. Doc. Add (new field ("contents", new filereader (F )));
68. Writer. adddocument (DOC );
69. }
70. }

Searcher. Java

1. Package com. Lucene. search;
3. Import java. Io. file;
4. Import java. Io. ioexception;
6. Import org. Apache. Lucene. analysis. Standard. standardanalyzer;
7. Import org.apache.e.doc ument. Document;
8. Import org. Apache. Lucene. queryparser. queryparser;
9. Import org. Apache. Lucene. Search. indexsearcher;
10. Import org. Apache. Lucene. Search. query;
11. Import org. Apache. Lucene. Search. scoredoc;
12. Import org. Apache. Lucene. Search. topdocs;
13. Import org. Apache. Lucene. Store. Directory;
14. Import org. Apache. Lucene. Store. fsdirectory;
16. Public class searcher {
18. Public static void main (string [] ARGs) throws exception {
19. File indexdir = new file ("C: // test // Index ");
20. String q = "111 ";
21. If (! Indexdir. exists () |! Indexdir. isdirectory ()){
22. Throw new ioexception ();
23. }
24. Search (indexdir, q );
25. }
27. Public static void search (File indexdir, string q) throws exception {
28. Directory fsdir = fsdirectory. getdirectory (indexdir );
29. Indexsearcher searcher = new indexsearcher (fsdir );
30. Queryparser parser = new queryparser ("contents", new standardanalyzer ());
31. Query query = parser. parse (Q );
33. Topdocs = searcher. Search (query,100); // 100 indicates the size of the queue.
34. Scoredoc [] hits = topdocs. scoredocs;
35. System. Out. println ("Total" + searcher. maxdoc () + "index, hit" + hits. Length + "entry ");
36. For (INT I = 0; I
37. Int docid = hitspolici2.16.doc;
38. Document document = searcher.doc (docid );
39. System. Out. println (docid + ":" + document. Get ("FILENAME "));
40. }
41. }
42. }