def getFile(file:File): Array[File] ={
val files = file.listFiles().filter(! _.isDirectory)
.filter(t => t.toString.endsWith(".txt") || t.toString.endsWith(".md")) //此处读取.txt and .md文件
files ++ file.listFiles().filter(_.isDirectory).flatMap(getFile)
}
val path = new File("G:\lzp_personal_data\study_data\itNote")
getFile(path).foreach(println)