Question

输入搜索词：Adil Shahi王朝

Adil Shahi王朝
Qutb Shahi王朝
Gohar Shahi模板

当我进入Adil Shahi王朝时，它会返回许多内容，我使用lucene API并希望将内容与精确短语匹配代码：用于创建索引

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：用户可能选择了错误的代码来通过Lucene搜索内容。您必须先创建Lucene索引，然后才能搜索内容。

Answer 2

以下是您可以参考搜索内容的代码：

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：感谢您的指导，我在对dbpedia的ttl文件进行索引更改后使用了它。您可以从此链接http://wiki.dbpedia.org/Downloads39下载龟文件，并且可以获取。

如何使用lucene API搜索精确短语的内容？

3 个答案: