Method annotated by @Catch can't get an instance of thrown exception

[Archer]

et's say we have defined lots of Controllers(I called these as REST api) , now I want to log the exception when it occurs, but it is tedious to surround try { .. } catch { .. } in
every controller method , like this:

object Application extends ScalaController{
def index1() = {
   try{
     throw new Exception("1"); // An exception is thrown when doing something
   }catch{
      case ex: Exception => play.error(ex.getMessage) ; renderText(ex.getMessage)
   }
}
def index2() = {

   try{
     throw new Exception("2"); // An exception is thrown when doing something
   }catch{
      case ex: Exception => play.error(ex.getMessage) ; renderText(ex.getMessage)
   }
}

.....
}

Why not write it like this:

trait ExceptionHandler{

this: ScalaController =>
@Catch(Array(classOf[Exception]))
def handle(ex: Exception ) : Unit ={
    play.error(ex.getMessage) //Log all of the exception message here !!
    renderText(ex.getMessage) // And return it to the client
}
}

object Application extends ScalaController with ExceptionHandler{
def index1() {
  throw new Exception('1") // No need to surround `try { .. } catch{ .. } ` any more
}

def index2(){
    throw new Exception("2") // No need to surround `try { .. } catch{ .. } ` any more
}
 .....
}

However, the method handle in ExceptionHandler can't get the instance of thrown exception. This issue is related with not only Scala but Java. I don't know what's wrong .

Please give me a clear suggestion or solution

BTW, Writing an exception handler plugin can log the exception message but can't return it to the client

This idea is similar to AOP's. But I found that Spring AOP can't be used here