如何在scaladsl中设置header？

import akka.http.scaladsl.model.headers.RawHeader
import akka.http.scaladsl.server.Directives._

val route = respondWithHeaders(RawHeader("Custom-Header", "Value")) {
  // 处理请求的逻辑
  complete("Response")
}

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

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.headers.RawHeader
import akka.http.scaladsl.server.Directives._

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

  val route = respondWithHeaders(RawHeader("Custom-Header", "Value")) {
    complete("Response")
  }

  val bindingFuture = Http().newServerAt("localhost", 8080).bind(route)
  println("Server online at http://localhost:8080/")
}