創建第一個lucene索引后，搜索出錯：

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創建完索引后沒有關閉（提交）導致索引沒有完整創建，導致搜索報錯

注意如下說明：（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 blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {//IndexerWriter寫索引操作關閉，提交寫索引（如沒關閉會造成索引無法完整創建，查詢時出錯）indexer.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}long end = System.currentTimeMillis();System.out.println("\n Indexing " + numIndexed + " files took "+ (end - start) + "milliseconds");}

總結

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