Google reCAPTCHA 令牌为空

如何解决Google reCAPTCHA 令牌为空

我正在尝试将 Google recaptcha v3 实施到我的 MVC 表单中。提交表单时，reacptcha 令牌值始终为空，但表单中的其他字段具有正确的值。任何想法问题出在哪里？谢谢。 contact.cs 模型：

public class contact
    {
        [Key]
        public int Id { get; set; }
        public string FullName {get;set;}
        ...
        public string GoogleCaptchaToken { get; set; }

    }

index.cshtml 视图：

    @using reCAPTCHA.MVC
    
    @section Scripts
    {
        <script src="https://www.google.com/recaptcha/api.js?my site key"></script>
        <script>
            grecaptcha.ready(function () {
                grecaptcha.execute('my site key',{ action: 'Home' }).then(function (token) {
                    $("#GoogleCaptchaToken").val(token);
                });
            });
        </script>
    
    }



    @using (Html.BeginForm("Index","Home",System.Web.Mvc.FormMethod.Post))
    {
        @Html.AntiForgeryToken()
    
       
            <!--form fields-->
            ...
            @Html.HiddenFor(model => model.GoogleCaptchaToken)
           
            <div class="form-group">
                <div class="col-md-offset-2 col-md-10">
                    <input type="submit" value="Submit" class="btn btn-default" />
                </div>
            </div>
        </div>
    }
    
    <style>
        .text-danger {
            color: red;
        }
    </style>
    
    @Scripts.Render("~/bundles/jqueryval")

后端代码：

家庭控制器处理程序

 [HttpPost]
   public ActionResult Index(contact model)
    {
        if (ModelState.IsValid)
        {
            var isCaptchaValid = ReCaptchaPassed(model.GoogleCaptchaToken);
            if (isCaptchaValid)
            {
                return RedirectToAction("Confirmation");
            }
            else
            {
                return View();
            }
        }
        return View();
    }
 public static bool ReCaptchaPassed(string gRecaptchaResponse)
        {
            HttpClient httpClient = new HttpClient();

            ...
        }