[Lucene]Rechercher un mot dans un fichier

**Hind4Dev** · 24/04/2016, 14h23

je veux effectuer une recherche dans un fichier .txt en se servant des librairies LUCENE, je veux que le résultat de ma recherche soit comme suit:
une ligne du nom du fichier
une ligne de phrase comme suit: les 3 mots qui précède mon mot recherché + mot recherché + les 3 mots qui suivent

ceci est le code que j'ai essayé

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
 
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.document.*;
import org.apache.lucene.document.Field.Store;
import java.io.*;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Scanner;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.FuzzyQuery;
 
 
public class SearchEngine {
 
 
    public static void main(String[] args) {
        indexDirectory();
 
 
        String userInput = "";
        Scanner getInputWord = new Scanner(System.in);
 
 
        System.out.print("Please type a word to search for.\nInput: ");
        userInput = getInputWord.next();
        search(userInput);
 
        System.out.print("Search again? (type Y or N) Y = Yes, N = No: ");
        userInput = getInputWord.next();
        while (!userInput.equals("n") && !userInput.equals("N")) {
            System.out.print("Input: ");
            userInput = getInputWord.next();
            search(userInput);
            System.out.print("Search again? (Y or N): ");
            userInput = getInputWord.next();
        }
    }
 
 
    private static void indexDirectory() {
        //Apache Lucene Indexing Directory .txt files     
        try {
            Path path;
            path = Paths.get("C:\\Users\\USER\\Desktop\\index");
            Directory directory = FSDirectory.open(path);
 
            IndexWriterConfig config = new IndexWriterConfig(new SimpleAnalyzer());
            IndexWriter indexWriter = new IndexWriter(directory, config);
            indexWriter.deleteAll();
            File f = new File("C:\\seminar\\test_data"); // current directory     
            for (File file : f.listFiles()) {
                //System.out.println("indexed " + file.getCanonicalPath());
                Document doc = new Document();
                doc.add(new TextField("FileName", file.getName(), Store.YES));
 
 
                FileInputStream is = new FileInputStream(file);
                BufferedReader reader = new BufferedReader(new InputStreamReader(is));
                StringBuffer stringBuffer = new StringBuffer();
                String line = null;
                while ((line = reader.readLine()) != null) {
                    stringBuffer.append(line).append("\n");
                }
                reader.close();
                doc.add(new TextField("contents", stringBuffer.toString(), Store.YES));
                indexWriter.addDocument(doc);
            }
            indexWriter.close();
            directory.close();
            System.out.println("indexing finished");
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }
 
 
    private static void search(String text) {
        //Apache Lucene searching text inside .txt files
        try {
            Path path = Paths.get("C:\\Users\\USER\\Desktop\\index");
 
 
            Directory directory = FSDirectory.open(path);
            IndexReader indexReader = DirectoryReader.open(directory);
            IndexSearcher indexSearcher = new IndexSearcher(indexReader);
            FuzzyQuery query = new FuzzyQuery(new Term("contents", text), 2);
            TopDocs topDocs = indexSearcher.search(query, 10);
 
 
            int i = 0;
            if (topDocs.totalHits > 0) {
                System.out.println("Found " + topDocs.totalHits + " result(s).");
                for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
                    Document document = indexSearcher.doc(scoreDoc.doc);
                    i = i + 1;
                    System.out.println("Result #" + i + " " + document.get("FileName"));
                }
            } else {
                System.out.println("No maches found!");
            }
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }
}