在 Swift 中获取标头响应

我正在按照这个答案在我的 swift 项目中进行 HTTP 调用。如何在 Swift 中发出 HTTP 请求？ https://stackoverflow.com/questions/24016142/how-to-make-an-http-request-in-swift

以下是我用来进行同步调用的代码

let urlPath: String = "http://apiserver.com/api/login/?username=asdf&password=asdf"
            var url: NSURL = NSURL(string: urlPath)!
            var request1: NSURLRequest = NSURLRequest(URL: url)

            var response: AutoreleasingUnsafeMutablePointer<NSURLResponse?> = nil

            var error: NSErrorPointer = nil
            var dataVal: NSData =  NSURLConnection.sendSynchronousRequest(request1, returningResponse: response, error:nil)!
            var err: NSError

            println("response -- \(response)")
            var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(dataVal, options: NSJSONReadingOptions.MutableContainers, error: nil) as! NSDictionary

            println("Synchronous \(jsonResult)")

有人可以帮助我使用此代码获取 HTTP 标头响应或状态代码吗？请

尝试这个：

 func getData(url: NSURL) {
    let config: NSURLSessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()
    let session: NSURLSession = NSURLSession(configuration: config)

    let dataTask: NSURLSessionDataTask = NSURLSession.sharedSession().dataTaskWithURL(url, completionHandler: {(data: NSData!, urlResponse: NSURLResponse!, error: NSError!) -> Void in

        if let httpUrlResponse = urlResponse as? NSHTTPURLResponse
        {
            if error {
                println("Error Occurred: \(error.localizedDescription)")
            } else {
                println("\(httpUrlResponse.allHeaderFields)") // Error
            }
        }
        })

       dataTask.resume()
    }