Scala:如何确定失败的异常类型

Question

看看这段代码:

userService.insert(user) match {
  case Success(f) => Logger.debug("User created successfully")
  case Failure(e) => {
     // how do I determine the type of `e`?
  }
}

如何确定包含的异常类型Failure？我需要根据异常类型采取不同的操作.

Answer 1

case Success(f) => 
case Failure(e: ExceptionType1) =>
case Failure(e: ExceptionType2) => 
case Failure(e) => // other

要么

case Success(f) =>
case Failure(e) => e match {
   case e1: ExceptionType1 =>
   case e2: ExceptioNType2 =>
   case _ => 
}