Lucene 4.0在文本搜索中

Question

我正在使用lucene 4.0和java。我試圖搜索字符串內的字符串。如果我們看一下lucene hello world示例，我希望在短語「inLuceneAction」中找到文本「lucene」。我希望它在這種情況下找到兩場比賽，而不是一場。

任何想法如何做到這一點？

感謝

public class HelloLucene { 
public static void main(String[] args) throws IOException, ParseException { 
// 0. Specify the analyzer for tokenizing text. 
// The same analyzer should be used for indexing and searching 
StandardAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_40); 

// 1. create the index 
Directory index = new RAMDirectory(); 

IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_40, analyzer); 

IndexWriter w = new IndexWriter(index, config); 
addDoc(w, "inLuceneAction", "193398817"); 
addDoc(w, "Lucene for Dummies", "55320055Z"); 
addDoc(w, "Managing Gigabytes", "55063554A"); 
addDoc(w, "The Art of Computer Science", "9900333X"); 
w.close(); 

// 2. query 
String querystr = args.length > 0 ? args[0] : "lucene"; 

// the "title" arg specifies the default field to use 
// when no field is explicitly specified in the query. 
Query q = new QueryParser(Version.LUCENE_40, "title", analyzer).parse(querystr); 

// 3. search 
int hitsPerPage = 10; 
IndexReader reader = DirectoryReader.open(index); 
IndexSearcher searcher = new IndexSearcher(reader); 
TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true); 
searcher.search(q, collector); 
ScoreDoc[] hits = collector.topDocs().scoreDocs; 

// 4. display results 
System.out.println("Found " + hits.length + " hits."); 
for(int i=0;i<hits.length;++i) { 
    int docId = hits[i].doc; 
    Document d = searcher.doc(docId); 
    System.out.println((i + 1) + ". " + d.get("isbn") + "\t" + d.get("title")); 
} 
// reader can only be closed when there 
// is no need to access the documents any more. 
reader.close(); 
} 
private static void addDoc(IndexWriter w, String title, String isbn) throws IOException { 
Document doc = new Document(); 
doc.add(new TextField("title", title, Field.Store.YES)); 

// use a string field for isbn because we don't want it tokenized 
doc.add(new StringField("isbn", isbn, Field.Store.YES)); 
w.addDocument(doc); 
} 
} 

Answer 1

如果指數在默認方式的條款，這意味着inLuceneAction是一個長期，Lucene的將無法seek給予Lucene這個詞，因爲它有一個不同的前綴。分析這個字符串，以便得到三個索引術語：inLuceneAction然後您將它提取。你會找到一個現成的分析儀，或者你必須自己寫。編寫自己的分析器有點超出了單個StackOverflow答案的範圍，但是一個很好的起點是org.apache.lucene.analysis包Javadoc頁面底部的包信息。