如何在Akka HTTP请求中访问请求的全路径？

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model._
import akka.http.scaladsl.server.Directives._
import akka.stream.ActorMaterializer

object Main extends App {
  implicit val system = ActorSystem("my-system")
  implicit val materializer = ActorMaterializer()
  implicit val executionContext = system.dispatcher

  val route =
    path("hello") {
      get {
        extractUri { uri =>
          complete(s"The full path of the request is: ${uri.path}")
        }
      }
    }

  val bindingFuture = Http().bindAndHandle(route, "localhost", 8080)

  println("Server online at http://localhost:8080/")
}