为Stripe付款创建客户时出错

我有一个ASP .NET Core MVC电子商务应用程序，我按照this guide中的说明实现了解决方案，但出于某种原因，我在收费方法中收到错误 Stripe.StripeException: 'Cannot charge a customer that has no active card' ，当用户发起付款时调用该方法 .

问题似乎是由条带电子邮件和条带令牌（它们是实际传递到计费方法的两个参数）接收空参数引起的 . 我不确定为什么这些变量在调用函数时会得到空值，因为我已经按照条带教程中列出的所有步骤进行操作 .

我已经使用条带仪表板中的测试和实时秘密以及可发布的密钥，并将它们正确地包含在appsettings json文件中 . 相关文件的代码如下 . What could be causing this error here?

stripe charge controller action

public IActionResult Charge(string stripeEmail, string stripeToken)
        {
            var customerService = new StripeCustomerService();
            var chargeService = new StripeChargeService();

            var customer = customerService.Create(new StripeCustomerCreateOptions
            {
                Email = stripeEmail,
                SourceToken = stripeToken
            });

            var charge = chargeService.Create(new StripeChargeCreateOptions
            {
                Amount = 500,
                Description = "ASP .NET Core Stripe Tutorial",
                Currency = "usd",
                CustomerId = customer.Id
            });

            return View();
        }

appsettings.json

"Stripe": {
    "SecretKey": "sk_test...",
    "PublishableKey": "pk_test..."
  }

charge view page

@using Microsoft.Extensions.Options
@inject IOptions<StripeSettings> Stripe

@{
    ViewData["Title"] = "MakePayment";
}

<form action="/Order/Charge" method="post">
    <article>
        <label>Amount: $5.00</label>
    </article>
    <script src="//checkout.stripe.com/v2/checkout.js"
            class="stripe-button"
            data-key="@Stripe.Value.PublishableKey"
            data-locale="auto"
            data-description="Sample Charge"
            data-amount="500">
    </script>
</form>
<h2>MakePayment</h2>

Stripe settings class

public class StripeSettings
    {
        public string SecretKey { get; set; }
        public string PublishableKey { get; set; }
    }

Startup.cs

public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("Cn")));

            services.AddIdentity<ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            // Add application services.
            services.AddTransient<IEmailSender, EmailSender>();
            services.AddDbContext<wywytrav_DBContext>(options => options.UseSqlServer(Configuration.GetConnectionString("Cn")));
            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddScoped(sp => ShoppingCart.GetCart(sp));
            services.AddScoped<SignInManager<ApplicationUser>, SignInManager<ApplicationUser>>();
            services.AddTransient<IOrderRepository, OrderRepository>();
            services.AddMvc();
            services.AddMemoryCache();
            services.AddSession();

            services.Configure<StripeSettings>(Configuration.GetSection("Stripe"));//stripe configuration
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {

            if (env.IsDevelopment())
            {
                app.UseBrowserLink();
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();
            app.UseSession();
            app.UseAuthentication();
            StripeConfiguration.SetApiKey(Configuration.GetSection("Stripe")["SecretKey"]);
}