实际上，它可以随您所愿进行.其他答复者投降得太快.没有白旗！

It can in fact be done just as you want. The other answerers surrendered too quickly. No white flags!

package object foo {
  type HasLogger = { def logger: Logger }
  implicit def mkLog(x: HasLogger) = new {
    def loggingExceptions(body: => Unit): Unit =
      try body
      catch { case ex: Exception => println(ex) }
  }
}

package foo {
  case class Logger(name: String) { }

  // Doesn't compile:
  // class A {
  //   def f = this.loggingExceptions(println("hi"))
  // }
  // 1124.scala:14: error: value loggingExceptions is not a member of foo.A
  //         def f = this.loggingExceptions(println("hi"))
  //                      ^
  // one error found  

  // Does compile
  class B {
    def logger = Logger("B")
    def f = this.loggingExceptions(println("hi"))
    def g = this.loggingExceptions(throw new Exception)
  }
}

object Test {
  def main(args: Array[String]): Unit = {
    val b = new foo.B
    b.f
    b.g
  }
}

// output
//
// % scala Test
// hi
// java.lang.Exception