no segments* file found in org.apache.lucene.store.SimpleFSDirectory

建立好文件索引后，再执行搜索个过程中出现了这个异常：

org.apache.lucene.index.IndexNotFoundException: no segments* file found in org.apache.lucene.store.SimpleFSDirectory@D:\lucene\index01 lockFactory=org.apache.lucene.store.NativeFSLockFactory@26e431: 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 com.lyl.test.HelloLucene.sercher(HelloLucene.java:73)
	at com.lyl.test.TestLucene.search1(TestLucene.java:19)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)

 

单元测试过程中，创建索引读取器IndexReader的时候，抛出异常，并发现索引文件都为0kb，最终确认是索引IndexWriter写入器没有将缓存中的信息输入文件内，

 

解决方法是：写入器添加好文件索引后，关闭写入器，就ok了！

写道

if(writer !=null) writer.close();