lucene 索引出错 no segments* file found in org.apache.lucene.store.MMapDirectory

骑猪看日落 2022-08-06 11:19 271阅读 0赞

**创建第一个lucene索引后，搜索出错：**

**org.apache.lucene.index.IndexNotFoundException: no segments\* file found in org.apache.lucene.store.MMapDirectory@H:\\lucene lockFactory=org.apache.lucene.store.NativeFSLockFactory@487c9b46: files: \[write.lock, \_0.fdt, \_0.fdx\]**

**at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:712)  
at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:75)  
at org.apache.lucene.index.IndexReader.open(IndexReader.java:462)  
at org.apache.lucene.index.IndexReader.open(IndexReader.java:308)  
at lucene.Searcher.search(Searcher.java:26)**

**at lucene.Searcher.main(Searcher.java:49)**

**原因：**

**indexer创建完索引后没有关闭（提交）导致索引没有完整创建，导致搜索报错**

**注意如下说明：（index.close()）**

public static void main(String[] args) {
    		long start = System.currentTimeMillis();
    		Indexer indexer = null;
    		int numIndexed = 0;
    		try {
    			indexer = new Indexer(indexDir);
    			numIndexed = indexer.index(dataDir, new TextFilesFilter());
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}finally{
    			try {
    				//IndexerWriter写索引操作关闭，提交写索引（如没关闭会造成索引无法完整创建，查询时出错）
    				indexer.close();
    		} catch (Exception e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    		}
    		long end = System.currentTimeMillis();
    		System.out.println("\n Indexing " + numIndexed + " files took "
    				+ (end - start) + "milliseconds");
    
    	}