lucene2.4测试二RAMDirectoryTest

1. package lucene.test;
3. import java.io.IOException;
5. import org.apache.lucene.analysis.standard.StandardAnalyzer;
6. import org.apache.lucene.document.Document;
7. import org.apache.lucene.document.Field;
8. import org.apache.lucene.index.CorruptIndexException;
9. import org.apache.lucene.index.IndexWriter;
10. import org.apache.lucene.index.IndexWriter.MaxFieldLength;
11. import org.apache.lucene.queryParser.ParseException;
12. import org.apache.lucene.queryParser.QueryParser;
13. import org.apache.lucene.search.IndexSearcher;
14. import org.apache.lucene.search.Query;
15. import org.apache.lucene.search.ScoreDoc;
16. import org.apache.lucene.search.Searcher;
17. import org.apache.lucene.search.TopDocCollector;
18. import org.apache.lucene.store.LockObtainFailedException;
19. import org.apache.lucene.store.RAMDirectory;
21. public class RAMDirectoryTest {
22.     public static void main(String[] args) throws ParseException{
23.         RAMDirectory ramindex=new RAMDirectory();
24.         
25.         try {
26.             IndexWriter writer=new IndexWriter(ramindex,new StandardAnalyzer(),true,MaxFieldLength.LIMITED);
27.             writer.addDocument(createDocument("道德经","天地不仁，以万物为刍狗，圣人不仁，以百姓为刍狗。"));
28.             writer.addDocument(createDocument("大学","大学之道,在明明德,在亲民，在止于至善。"));
29.             writer.addDocument(createDocument("黄帝内经","恬惔虚无，精神内守；食饮有节，谨和五味。"));
30.             writer.addDocument(createDocument("中庸","忠恕违道不远，施诸己而不愿，亦勿施于人。"));
31.             
32.             writer.optimize();
33.             writer.close();
34.             
35.             Searcher searcher=new IndexSearcher(ramindex);
36.             search(searcher,"德");
37.         } catch (CorruptIndexException e) {
38.             // TODO Auto-generated catch block
39.             e.printStackTrace();
40.         } catch (LockObtainFailedException e) {
41.             // TODO Auto-generated catch block
42.             e.printStackTrace();
43.         } catch (IOException e) {
44.             // TODO Auto-generated catch block
45.             e.printStackTrace();
46.         }
47.         
48.     }
50.     private static void search(Searcher searcher, String queryString) throws ParseException, IOException{
51.         // TODO Auto-generated method stub
52.         QueryParser parser=new QueryParser("content",new StandardAnalyzer());
53.         Query query=parser.parse(queryString);
54.         
55.         int hitsPerPage=100;
56.         TopDocCollector collector=new TopDocCollector(hitsPerPage);
57.         searcher.search(query,collector);
58.         ScoreDoc[] hits=collector.topDocs().scoreDocs;
59.         int hitCount=hits.length;
60.         if(hitCount==0){
61.             System.out.println("没有找到 /""+queryString+"/"");
62.         }else{
63.             System.out.println("查找'"+queryString+"'返回"+hitCount+"个结果");
64.         }
65.         for(int i=0;i<hits.length;i++){
66.             int docId=hits[i].doc;
67.             Document doc=searcher.doc(docId);
68.             System.out.println("文档编号:"+docId+":"+doc.get("title")+doc.get("content"));
69.         }
70.     }
72.     private static Document createDocument(String title, String content) {
73.         // TODO Auto-generated method stub
74.         Document doc=new Document();
75.         doc.add(new Field("title",title,Field.Store.YES,Field.Index.ANALYZED));
76.         doc.add(new Field("content",content,Field.Store.YES,Field.Index.ANALYZED));
77.         return doc;
78.         
79.     }
80. }