iOS wkwebview https 加载不受信用的站点

    func webView(_ webView: WKWebView, didReceive challenge: URLAuthenticationChallenge,
                 completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
        let cred = URLCredential.init(trust: challenge.protectionSpace.serverTrust!)
        completionHandler(.useCredential, cred)
    }

self.wk.navigationDelegate = self