如何使用lucene API搜索帶有精確短語的內容？

Question

輸入短語進行搜索：阿迪爾·沙希王朝

1. 阿迪爾·沙希王朝
2. Qutb Shahi王朝
3. Gohar Shahi模板

當我進入Adil Shahi朝代時，它返回了許多內容，我使用的是lucene API，並希望將內容與確切的詞組代碼匹配：用於創建索引

public static void main(String[] args) throws Exception{
     StandardAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_47);
     PhraseQuery query = new PhraseQuery();
    Directory index = FSDirectory.open(new File("/ttlfiles/indexes/category_labels_en"));
    BufferedReader br = new BufferedReader(
            new InputStreamReader(System.in));
    String querystr = br.readLine();
    while(!querystr.equals("q")){
    Query q = new QueryParser(Version.LUCENE_47, "spa", 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("spa"));
    }//end of for loop
    querystr = br.readLine();
    }//while's end
}

Answer 1

@Gimby：可能是用戶選擇了錯誤的代碼來通過Lucene搜索內容。 您必須先創建Lucene索引，然后才能搜索內容。

Answer 2

您可以參考以下代碼來搜索內容：

public static void main(String[] args) throws Exception{
     StandardAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_47);
     //PhraseQuery query = new PhraseQuery();
    Directory index = FSDirectory.open(new File("/media/New Volume/ttlindexes"));
    BufferedReader br = new BufferedReader(
            new InputStreamReader(System.in));
    String querystr = br.readLine();
    while(!querystr.equals("q")){
        QueryParser parser = new QueryParser(Version.LUCENE_47,"spo",analyzer);
        parser.setDefaultOperator(QueryParser.Operator.OR);
        //parser.setPhraseSlop(0);
        Query query=parser.createPhraseQuery("spo",querystr);
    //Query q = new QueryParser(Version.LUCENE_47, "spa", analyzer).parse(querystr);

    // 3. search
    int hitsPerPage = 1000000;
    IndexReader reader = DirectoryReader.open(index);
    IndexSearcher searcher = new IndexSearcher(reader);
    TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
    searcher.search(query, 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("spo"));
    }//end of for loop
    querystr = br.readLine();
    }//while's end
}

Answer 3

@Aadil：感謝您的指導，在對dbpedia的ttl文件建立索引后，我已經使用了它。 您可以從此鏈接http://wiki.dbpedia.org/Downloads39下載烏龜文件，並可以獲取。