我在一个项目中遇到了同样的问题，我做了如下的事情来解决它：

let cookies = NSHTTPCookie.cookiesWithResponseHeaderFields(response.allHeaderFields as! [String: String], forURL: response.URL!)
Alamofire.Manager.sharedInstance.session.configuration.HTTPCookieStorage?.setCookies(cookies, forURL: response.URL!, mainDocumentURL: nil)

您只需要执行一次，因为Alamofire示例是一个单例示例，所以对于所有下一个请求，都会设置cookie。
希望这就是你要找的：）

雨燕三：
我在UserDefaults中保存了一组cookie，我将它们附加到请求中的操作是：

var request = URLRequest(url: "https://yourURL.com")
if let cookies = cookies as? [HTTPCookie] {
   let headers = HTTPCookie.requestHeaderFields(with: cookies)
   request.allHTTPHeaderFields = headers
}

多亏了Jérémy，我才得以：

Alamofire.request(.POST, url, ...)
    .responseJSON { 
    response in 
    HTTPClient.updateCookies(response)
    ...
}

static func updateCookies(response: Response<AnyObject, NSError>) {
    if let
        headerFields = response.response?.allHeaderFields as? [String: String],
        URL = response.request?.URL {
        let cookies = NSHTTPCookie.cookiesWithResponseHeaderFields(headerFields, forURL: URL)
        //print(cookies)
        // Set the cookies back in our shared instance. They'll be sent back with each subsequent request.
        Alamofire.Manager.sharedInstance.session.configuration.HTTPCookieStorage?.setCookies(cookies, forURL: URL, mainDocumentURL: nil)
    }
}

您很可能会将其作为Request上的扩展，因此.storeCookies（）调用将成为.validate（）.responseJSON（）链接的一部分。

swift 5 and Xcode 11
let cookies = HTTPCookie.cookies(withResponseHeaderFields: response.response?.allHeaderFields as! [String: String], for: (response.response?.url)!)

Alamofire.SessionManager.default.session.configuration.httpCookieStorage?.setCookies(cookies, for: response.response?.url, mainDocumentURL: nil)

iOS 11和阿拉莫之火4

let webDataStore = webView.configuration.websiteDataStore
webDataStore.httpCookieStore.getAllCookies { (cookies) in
    Alamofire.SessionManager.default.session.configuration.httpCookieStorage?.setCookies(
        cookies,
        for: url,
        mainDocumentURL: nil
    )
}