Scala检查是否存在路径或文件
scala> import java.nio.file.{Paths, Files}
import java.nio.file.{Paths, Files}
scala> Files.exists(Paths.get("/tmp"))
res0: Boolean = truescala> import java.nio.file.{Paths, Files}
import java.nio.file.{Paths, Files}
scala> Files.exists(Paths.get("/tmp"))
res0: Boolean = true