scala – 如何从响应’set-cookie’标头转换为在spray中请求’cookie’标头？

我正在尝试使用 spray-client和 spray-httpx,我无法弄清楚如何将’set-cookie’标头从HttpResponse转换为我想在HttpRequest上设置的’cookie’标头

val responseSetCookieHeaders = response.headers filter { _.name == "Set-Cookie" }
...
val requestCookieHeader:HttpHeader = ???
...
addHeader(requestCookieHeader) ~> sendReceive ~> { response => ??? }

我确实看到了spray.http.HttpHeaders.Cookie,但我看不到从HttpHeader的实例转换为HttpCookie的方法……

解决方法

HttpHeaders.Cookie是一个带有unapply方法的case类.所以你可以通过一个简单的函数从响应中提取它：

def getCookie(name: String): HttpHeader => Option[HttpCookie] = {
  case Cookie(cookies) => cookies.find(_.name == name)
}

这是一个更普遍的情况,但我认为解决方案很明确.

我会用以下方式做到这一点：

// some example response with cookie
val httpResponse = HttpResponse(headers = List(`Set-Cookie`(HttpCookie("a","b"))))

// extracting HttpCookie
val httpCookie: List[HttpCookie] = httpResponse.headers.collect { case `Set-Cookie`(hc) => hc }

// adding to client pipeline
val pipeline = addHeader(Cookie(httpCookie)) ~> sendReceive