有没有办法用akka-http从查询参数中获取流？

libraryDependencies += "com.typesafe.akka" %% "akka-http" % "2.6.16"

import akka.http.scaladsl.server.Directives._

val route = path("example") {
  get {
    parameters('param) { param =>
      // 在这里可以获取到查询参数，param为参数的值
      // 处理参数获取到的流
      complete(s"Received param: $param")
    }
  }
}

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.stream.ActorMaterializer

implicit val system = ActorSystem("my-system")
implicit val materializer = ActorMaterializer()
implicit val executionContext = system.dispatcher

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