線程「main」中的異常org.apache.lucene.index.IndexNotFoundException：在org.apache.lucene.store.SimpleFSDirectory中找不到任何段*文件

Question

/* *要更改此模板，請選擇工具|模板 *並在編輯器中打開模板。 */

import java.io.File; 
import java.io.FileReader; 
import java.io.IOException; 
import java.io.Reader; 
import java.util.Date; 


import org.apache.lucene.analysis.standard.StandardAnalyzer; 
import org.apache.lucene.document.Document; 
import org.apache.lucene.document.TextField; 
import org.apache.lucene.index.DirectoryReader; 
import org.apache.lucene.index.IndexReader; 
import org.apache.lucene.index.IndexWriter; 
import org.apache.lucene.store.SimpleFSDirectory; 
import org.apache.lucene.index.IndexWriterConfig; 
import org.apache.lucene.queryparser.classic.ParseException; 
import org.apache.lucene.queryparser.classic.QueryParser; 
import org.apache.lucene.search.IndexSearcher; 
import org.apache.lucene.search.Query; 
import org.apache.lucene.search.TopDocs; 
import org.apache.lucene.util.Version; 
import org.apache.lucene.store.Directory; 


public class OpenBookCrackIndexer { 

    public static final Version luceneVersion = Version.LUCENE_43; 

    /** 
    * @param args the command line arguments 
    */ 
    public static int index(File indexDir, Directory dataDir) throws IOException { 


     IndexWriterConfig luceneConfig = new IndexWriterConfig(
       luceneVersion, new StandardAnalyzer(luceneVersion)); 

     IndexWriter writer = new IndexWriter(dataDir, luceneConfig); 

     File[] files = indexDir.listFiles(); 
     for (File file : files) { 

      if (file.getName().endsWith(".pdf")) { 
       Document document = new Document(); 

       String path = file.getCanonicalPath(); 

       document.getField(path); 
       Reader reader = new FileReader(file); 
       document.add(new TextField(path.toString(), reader)); 


       writer.addDocument(document); 

      } 
     } 

     return writer.numDocs(); 
    } 

    public static void search(String str) throws IOException, ParseException { 
     if (str.isEmpty()) { 
      System.out.println("Error :"+str.toString()); 

     } 

     File dataDir = new File("C:\\Users\\XXXXX\\Desktop\\print_imp\\Lucene"); 

     if (!dataDir.exists()) { 
      throw new IOException(dataDir + "does not exist or is not a directory"); 
     } 

//  String[] files = dataDir.list(); 
//  for(int i = 0;i< files.length;i++){ 
//   System.out.println(files[i].toString()); 
//  } 

     Directory toSearch = new SimpleFSDirectory(dataDir); 
     IndexReader indexreader = DirectoryReader.open(toSearch); 

     IndexSearcher searcher = new IndexSearcher(indexreader); 

     StandardAnalyzer analyzer = new StandardAnalyzer(luceneVersion); 


     QueryParser queryParser = new QueryParser(luceneVersion, "Contents", analyzer); 
     Query query = queryParser.parse(str); 
     TopDocs td = searcher.search(query, 20); 
     System.out.println("Number of hits: " + td.totalHits); 

     for (int i = 0; i < td.totalHits; i++) { 
      System.out.println("Doc Number " + td.scoreDocs[i].doc + "Score :" + td.scoreDocs[i].score); 
     } 


    } 

    public static void main(String[] args) throws Exception { 


     File indexDir = new File("C:\\Users\\XXXXX\\Desktop\\print_imp"); 
     File dataDir = new File("C:\\Users\\XXXXX\\Desktop\\print_imp\\Lucene"); 

     if (!indexDir.exists() || !dataDir.exists()) { 
      throw new IOException(dataDir + "does not exist or is not a directory"); 
     } 


     //SimpleFSDirectory SDindexDir = new SimpleFSDirectory(indexDir); 
     SimpleFSDirectory SDdataDir = new SimpleFSDirectory(dataDir); 

     //Directory dirIndex = SDindexDir; 
     Directory dirData = SDdataDir; 

     //long start = new Date().getTime(); 
     //int numIndexed = index(indexDir, dirData); 
     //long end = new Date().getTime(); 

     //System.out.println("Indexed :" + numIndexed + " Time Took to Index: " + (end - start) + " milliseconds"); 

     search("Algorithms"); 

    } 
} 

這裏我試圖使用Lucene 4.3 ..從賬面Lucene的行動中一個基本的文件目錄索引。並且由於版本的變化，因爲它是我不能使用代碼... 任何一個可以幫助我走出我得到的錯誤...

錯誤

Exception in thread "main" org.apache.lucene.index.IndexNotFoundException: no segments* file found in org.apache.lucene.store.SimpleFSDirectory@C:\<PATH>lockFactory=org.apache.lucene.store.NativeFSLockFactory@52fe85: files: [write.lock, _0.fdt, _0.fdx, _0.fnm, _0.nvd, _0.nvm, _0.si, _0_Lucene41_0.doc, _0_Lucene41_0.pos, _0_Lucene41_0.tim, _0_Lucene41_0.tip, _1.fdt, _1.fdx, _1.fnm, _1.nvd, _1.nvm, _1.si, _1_Lucene41_0.doc, _1_Lucene41_0.pos, _1_Lucene41_0.tim, _1_Lucene41_0.tip, _2.fdt, _2.fdx, _2.fnm, _2.nvd, _2.nvm, _2.si, _2_Lucene41_0.doc, _2_Lucene41_0.pos, _2_Lucene41_0.tim, _2_Lucene41_0.tip, _3.fdt, _3.fdx, _3.fnm, _3.nvd, _3.nvm, _3.si, _3_Lucene41_0.doc, _3_Lucene41_0.pos, _3_Lucene41_0.tim, _3_Lucene41_0.tip, _4.cfe, _4.cfs, _4.si, _5.cfe, _5.cfs, _5.si, _6.cfe, _6.cfs, _6.si, _7.cfe, _7.cfs, _7.si, _8.fdt, _8.fdx] 
    at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:741) 
    at org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:52) 
    at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:66) 

Answer 1

您需要closewriter爲了提交更改！