Lucene-6.4.2：クラスが見つかりません。DefaultSimilarity、クエリを追加しようとしました。

Question

私は、プロジェクトでテキストベースの検索のためにApache luceneをテストしています。残念ながら、私はライブラリの欠落に問題があります。私はlucene-queriesを追加しようとしましたが、それは助けになりませんでした。私は間違って何をしていますか？

のErrorLog：

Caused by: java.lang.NoClassDefFoundError: org/apache/lucene/search/similarities/DefaultSimilarity 
    at org.hibernate.search.spi.SearchIntegratorBuilder.createCleanFactoryState(SearchIntegratorBuilder.java:287) 
    at org.hibernate.search.spi.SearchIntegratorBuilder.buildNewSearchFactory(SearchIntegratorBuilder.java:186) 
    at org.hibernate.search.spi.SearchIntegratorBuilder.buildSearchIntegrator(SearchIntegratorBuilder.java:117) 
    at org.hibernate.search.hcore.impl.HibernateSearchSessionFactoryObserver.sessionFactoryCreated(HibernateSearchSessionFactoryObserver.java:66) 
    at org.hibernate.internal.SessionFactoryObserverChain.sessionFactoryCreated(SessionFactoryObserverChain.java:52) 
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:588) 
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) 
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1930) 
    at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:372) 
    at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:454) 
    at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:439) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570) 
    ... 98 more 
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.search.similarities.DefaultSimilarity 
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858) 
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701) 
    ... 111 more 

のpom.xml：私がしようとしています

<!-- https://mvnrepository.com/artifact/org.apache.lucene/lucene-core --> 
     <dependency> 
      <groupId>org.apache.lucene</groupId> 
      <artifactId>lucene-core</artifactId> 
      <version>6.4.2</version> 
     </dependency> 

コード：

@Override 
    public void saveIndexes() { 
     //Apache Lucene Indexing Directory .txt files 
     try { 
      //indexing directory 
      Path path = Paths.get("/home/akshay/index/"); 
      Directory directory = org.apache.lucene.store.FSDirectory.open(path); 
      IndexWriterConfig config = new IndexWriterConfig(new SimpleAnalyzer()); 
      IndexWriter indexWriter = new IndexWriter(directory, config); 
      indexWriter.deleteAll(); 
      File f = new File("/home/akshay/textfiles/"); // current directory 
      for (File file : f.listFiles()) { 
       System.out.println("indexed " + file.getCanonicalPath()); 
       org.apache.lucene.document.Document doc = new org.apache.lucene.document.Document(); 
       doc.add(new TextField("path", file.getName(), Field.Store.YES)); 
       FileInputStream is = new FileInputStream(file); 
       BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
       StringBuffer stringBuffer = new StringBuffer(); 
       String line; 
       while((line = reader.readLine())!=null){ 
        stringBuffer.append(line).append("\n"); 
       } 
       reader.close(); 
       doc.add(new TextField("contents", stringBuffer.toString(), Field.Store.YES)); 
       indexWriter.addDocument(doc); 
      } 
      indexWriter.close(); 
      directory.close(); 
     } catch (Exception e) { 
      // TODO: handle exception 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void searchLucene(String text) { 
     //Apache Lucene searching text inside .txt files 
     try { 
      Path path = Paths.get("/home/akshay/index/"); 
      Directory directory = FSDirectory.open(path); 
      IndexReader indexReader = DirectoryReader.open(directory); 
      IndexSearcher indexSearcher = new IndexSearcher(indexReader); 
      QueryParser queryParser = new QueryParser("contents", new StandardAnalyzer()); 
      Query query = queryParser.parse(text); 
      TopDocs topDocs = indexSearcher.search(query,10); 
      System.out.println("totalHits " + topDocs.totalHits); 
      for (ScoreDoc scoreDoc : topDocs.scoreDocs) { 
       org.apache.lucene.document.Document document = indexSearcher.doc(scoreDoc.doc); 
       System.out.println("path " + document.get("path")); 
       System.out.println("content " + document.get("contents")); 
      } 
     } catch (Exception e) { 
      // TODO: handle exception 
      e.printStackTrace(); 
     } 
    } 

を任意のアイデアは、あなたに感謝します。 、6.4.2バージョンでそれを探しているとき、それはもう存在しません:-)

Answer 1

が実際にクラスが5.4.1ですでに廃止されました、メッセージを参照してください：

Use ClassicSimilarity for equivilent behavior, or consider switching to BM25Similarity which will become the new default in Lucene 6.0

をalso：

• LUCENE-6789: IndexSearcher's default Similarity is changed to BM25Similarity. Use ClassicSimilarity to get the old vector space DefaultSimilarity. (Robert Muir)

あなたはWH実行されているものを5.5.4にあなたのLuceneコアの依存関係をダウングレードするか、あなたのコード内でClassicSimilarityまたはBM25Similarity