如何从Akka HTTP请求中读取cookie值

Question

我是Akka HTTP的新手，我想知道如何从Akka HTTP请求中提取cookie。如果可能，有人可以发布一个如何使用Scala完成此操作的示例吗？

Answer 1

正如documentation所述，您可以使用cookie指令从请求中提取Cookie：

val route =
  cookie("userName") { nameCookie =>
    complete(s"The logged in user is '${nameCookie.value}'")
  }

// tests:
Get("/") ~> Cookie("userName" -> "paul") ~> route ~> check {
  responseAs[String] shouldEqual "The logged in user is 'paul'"
}
// missing cookie
Get("/") ~> route ~> check {
  rejection shouldEqual MissingCookieRejection("userName")
}
Get("/") ~> Route.seal(route) ~> check {
  responseAs[String] shouldEqual "Request is missing required cookie 'userName'"
}

还有optionalCookie指令：

val route =
  optionalCookie("userName") {
    case Some(nameCookie) => complete(s"The logged in user is '${nameCookie.value}'")
    case None             => complete("No user logged in")
  }

// tests:
Get("/") ~> Cookie("userName" -> "paul") ~> route ~> check {
  responseAs[String] shouldEqual "The logged in user is 'paul'"
}
Get("/") ~> route ~> check {
  responseAs[String] shouldEqual "No user logged in"
}