问在Scala play框架中处理发出外部URL调用的正确方法

EN

var someExternalUrl = ...
def oauth = Action { request =>
    val paramMap = request.queryString.map { case (k, v) => k -> v.mkString }
    if (paramMap.contains("error")) {
      // Redirect to error page
    } else {
      val d2 = Duration(1000, "millis")
      val futureResponse = ws.url(someExternalUrl).withQueryString(...).toString).get()

      var m = futureResponse.map(response => {
        val json = response.json

        val userId: String = (json \ "user_id").as[String]
        Redirect(routes.Application.home()).withSession(
        "user_id" -> userId
        )
      })
      Await.result(m, d2)
    }