func webView(_ webView: WKWebView,decidePolicyFor navigationResponse: WKNavigationResponse,decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {

    if let response = navigationResponse.response as? HTTPURLResponse {

        var headers = [String : String]()
        for (header,value) in response.allHeaderFields {
            headers[(header as? String)!] = value as? String
        }
        let cookies = HTTPCookie.cookies(withResponseHeaderFields: headers,for: response.url!)
        for cookie: HTTPCookie in cookies {
            print(cookie)
            HTTPCookieStorage.shared.setCookie(cookie)
        }
    }

    decisionHandler(.allow)

}

这捕获了大多数cookie,但是如果WKWebView中发生了302重定向则不会.是否有委托方法或其他技术可以从具有302响应代码的响应中捕获cookie？