Lucene3.0 对数据库数据进行搜索

Java代码  

1. package com.orifound.aiim.web.util;  
2.   
3. import java.io.File;  
4. import java.sql.Connection;  
5. import java.sql.DriverManager;  
6. import java.sql.PreparedStatement;  
7. import java.sql.ResultSet;  
8.   
9. import org.apache.lucene.analysis.Analyzer;  
10. import org.apache.lucene.analysis.standard.StandardAnalyzer;  
11. import org.apache.lucene.document.Document;  
12. import org.apache.lucene.document.Field;  
13. import org.apache.lucene.index.IndexWriter;  
14. import org.apache.lucene.queryParser.QueryParser;  
15. import org.apache.lucene.search.IndexSearcher;  
16. import org.apache.lucene.search.Query;  
17. import org.apache.lucene.search.ScoreDoc;  
18. import org.apache.lucene.search.TopScoreDocCollector;  
19. import org.apache.lucene.store.Directory;  
20. import org.apache.lucene.store.FSDirectory;  
21. import org.apache.lucene.util.Version;  
22.   
23. /** 
24.  *  
25.  * @描述 对数据库数据进行搜索 
26.  */  
27. public class LuceneUtil {  
28.   
29.     // 保存路径  
30.     private static String INDEX_DIR = "D:\\Lucene\\index";  
31.     private static Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);  
32.     private static Directory directory = null;  
33.   
34.     /** 
35.      * 建立索引 
36.      * @param args 
37.      */  
38.     public static void index() throws Exception{  
39.         directory = FSDirectory.open(new File(INDEX_DIR));  
40.         File indexFile = new File(INDEX_DIR);  
41.         if (!indexFile.exists()) {  
42.             indexFile.mkdirs();  
43.         }  
44.           
45.         //if (new File(INDEX_DIR).listFiles().length <= 0) {  
46.             IndexWriter indexWriter = new IndexWriter(directory, analyzer,IndexWriter.MaxFieldLength.LIMITED);  
47.   
48.             Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");  
49.             Connection connection = DriverManager.getConnection("jdbc:sqlserver://bbs:1433;DatabaseName=AIIM_DB;userName=sa;password=123456");  
50.             PreparedStatement statement = connection.prepareStatement("select * from ArchivesInfoAttachedFileFullTextInfo");  
51.             ResultSet resultSet = statement.executeQuery();  
52.             while (resultSet.next()) {  
53.                 Document document = new Document();  
54.                 document.add(new Field("ID", resultSet.getString("ID"),Field.Store.YES, Field.Index.ANALYZED));  
55.                 document.add(new Field("FullText", resultSet.getString("FullText"), Field.Store.YES, Field.Index.ANALYZED));  
56.                 indexWriter.addDocument(document);  
57.             }  
58.               
59.             indexWriter.optimize();// 优化  
60.             indexWriter.close();  
61.             resultSet.close();  
62.             statement.close();  
63.             connection.close();  
64.         //}  
65.     }  
66.       
67.     /** 
68.      * 关键字查询 
69.      * @param str 
70.      * @throws Exception 
71.      */  
72.     public static void search(String str) throws Exception{  
73.         directory = FSDirectory.open(new File(INDEX_DIR));  
74.         IndexSearcher indexSearcher = new IndexSearcher(directory, true);  
75.           
76.         String fieldname = "FullText";  
77.         QueryParser queryParser = new QueryParser(Version.LUCENE_30,fieldname, analyzer);  
78.         Query query = queryParser.parse(str);  
79.         TopScoreDocCollector topScoreDocCollector = TopScoreDocCollector.create(100, true);  
80.         indexSearcher.search(query, topScoreDocCollector);  
81.         ScoreDoc[] scoreDocs = topScoreDocCollector.topDocs().scoreDocs;  
82.         for (int i = 0; i < scoreDocs.length; i++) {  
83.             Document doc = indexSearcher.doc(scoreDocs[i].doc);  
84.             System.out.println(doc.get("ID"));  
85.             System.out.println("------------------------------------------------");  
86.         }  
87.     }  
88.       
89.       
90.     public static void main(String[] args) {      
91.         try {  
92.             //LuceneUtil.index();  
93.             LuceneUtil.search("成绩");  
94.         } catch (Exception e) {  
95.             e.printStackTrace();  
96.         }  
97.     }  
98. }