public async Task GetQRCode() { Response.ContentType = "image/jpeg"; string qrToken = await SecurityServices.GetQRToken(); var bitmap = QRCodeHelper.GetQRCode($"{domain}/Security/Login?token={qrToken}", 4); // 将二维码回调标识输出给cookie // 创建cookie Response.Cookies.Append(QRTOKEN_COOKIE_NAME, qrToken); bitmap.Save(Response.Body, ImageFormat.Jpeg); }