Lucene实践之SearchFile

 1 package lucene;
 2 
 3 import java.io.File;
 4 import java.io.IOException;
 5 
 6 import org.apache.lucene.analysis.Analyzer;
 7 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 8 import org.apache.lucene.document.Document;
 9 import org.apache.lucene.index.DirectoryReader;
10 import org.apache.lucene.index.IndexReader;
11 import org.apache.lucene.queryparser.classic.ParseException;
12 import org.apache.lucene.queryparser.classic.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.TopDocs;
17 import org.apache.lucene.store.FSDirectory;
18 import org.apache.lucene.util.Version;
19 
20 public class Searcher {
21     public static IndexSearcher indexSearcher;
22     public static void search(String index,String queryStr) throws IOException, ParseException {
23         long start = System.currentTimeMillis();
24         IndexReader indexReader = DirectoryReader.open(FSDirectory.open(new File(index)));//读取索引
25         indexSearcher = new IndexSearcher(indexReader);
26         Analyzer anlyzer = new StandardAnalyzer(Version.LUCENE_46);//分词器
27         QueryParser parser = new QueryParser(Version.LUCENE_46, "content", anlyzer);//解析查询,"content"指定了查找的域(Field)
28         Query query = parser.parse(queryStr);
29         TopDocs results = indexSearcher.search(query, 10);//返回10条结果
30         ScoreDoc[] hits = results.scoreDocs;
31         int totalHits = results.totalHits;
32         for(int i = 0; i < totalHits; i++) {
33             Document doc = indexSearcher.doc(hits[i].doc);
34             System.out.println("["+doc.get("name")+"] " + doc.get("path"));
35             System.out.println();
36         }
37         long end = System.currentTimeMillis();
38         System.out.println("共找到"+totalHits+"条结果,耗时："+(end-start)+"ms");
39     }
40     public static void main(String[] args) throws IOException, ParseException {
41         search("E:/data/index", "never");
42     }
43 }

[nevergrowold.txt] E:\data\data2\nevergrowold.txt

共找到1条结果,耗时：143ms