如何将HTML表单转换为C PayPal用于PayPal订阅

如果我理解这一点,那么在您的情况下,每个订阅对于每个客户来说都是唯一的,而对于静态按钮来说,这是行不通的,因此api似乎是唯一可行的方法。

PayPal API覆盖订阅,它们被称为订阅。 Billing Plans . 因为每个订阅都不同,所以可以为每个唯一的服务(或服务组合)创建新的计费计划。这可以在不使用任何中间sdk的情况下完成,直接将httpclient用于它们的api。

或者,您提到的PayPal网络SDK也似乎涵盖计费计划。他们 Sample application 有很多关于如何创建、枚举和发布帐单计划的例子。一定要检查一下 billing_agreement_tokens 上的集合 Payment 班级。您可以在那里添加多个“服务”令牌。

不管你离发布有多近,很多测试似乎仍在进行中。

你可以试着使用httpclient,这样会有帮助

    HttpContent content = new FormUrlEncodedContent(
            new List<KeyValuePair<string, string>> { 
                new KeyValuePair<string, string>("key1", 
      "value1"),
                new KeyValuePair<string,string>("key2","value2")
            });
        content.Headers.ContentType = new 
       MediaTypeHeaderValue("application/x-www-form- 
       urlencoded");
        content.Headers.ContentType.CharSet = "UTF-8";
        HttpResponseMessage resposne = await 
        client.PostAsync(new Uri("paypalWebAddress"), 
       content);

您不应该在表单中硬编码这些值,而应该在后端创建一个api,该api将返回相应的值,然后您可以根据api的响应动态创建表单。

请确保在收到来自API的响应后创建此表单。您可以进行类似“响应是否为空”的检查,显示一些微调器。

<form action="paypalWebAddress" method="post" target="_top">
    <input type="hidden" name="cmd" value="{response.cmd}"/>                        
    <input type="hidden" name="business" value={response.business}"/>
    <input type="hidden" name="paymentaction" value={response.action}/>
    <input type="hidden" name="item_name" value="{response.item}"/>
 <input type="submit" name="submit" value="Make Payment"/>
</form>

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
  <input type="hidden" name="cmd" value="_xclick">
  <input type="hidden" name="business" value="business.test.com">
  <input type="hidden" name="item_name" value="Memory Stick">
  <input type="hidden" name="item_number" value="MEM32507725">
  <input type="hidden" name="amount" value="3">
  <input type="hidden" name="tax" value="1">
  <input type="hidden" name="quantity" value="1">
  <input type="hidden" name="currency_code" value="USD">

  <!-- Enable override of buyers's address stored with PayPal . -->
  <input type="hidden" name="address_override" value="1">
  <!-- Set variables that override the address stored with PayPal. -->
  <input type="hidden" name="first_name" value="John">
  <input type="hidden" name="last_name" value="Doe">
  <input type="hidden" name="address1" value="345 Lark Ave">
  <input type="hidden" name="city" value="San Jose">
  <input type="hidden" name="state" value="CA">
  <input type="hidden" name="zip" value="95121">
  <input type="hidden" name="country" value="US">
  <input type="image" name="submit"
    src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
    alt="PayPal - The safer, easier way to pay online">
</form>

点击立即购买:

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">

  <!-- Identify your business so that you can collect the payments. -->
  <input type="hidden" name="business" value="herschelgomez@xyzzyu.com">

  <!-- Specify a Buy Now button. -->
  <input type="hidden" name="cmd" value="_xclick">

  <!-- Specify details about the item that buyers will purchase. -->
  <input type="hidden" name="item_name" value="Premium Umbrella">
  <input type="hidden" name="amount" value="50.00">
  <input type="hidden" name="currency_code" value="USD">

  <!-- Prompt buyers to enter the quantities they want. -->
  <input type="hidden" name="undefined_quantity" value="1">

  <!-- Display the payment button. -->
  <input type="image" name="submit" border="0"
    src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
    alt="Buy Now">
  <img alt="" border="0" width="1" height="1"
    src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" >

</form>