PayPal HTML 按钮缺少发票参数

Question

我实现了一个 Paypal HTML 按钮(支付和订阅)来引导客户到 Paypal 网站进行支付。此外，我将发票编号作为参数传递。根据以下文件，发票是传递变量。

https://developer.paypal.com/docs/paypal-payments-standard/integration-guide/Appx-websitestandard-htmlvariables/# https://www.paypalobjects.com/webstatic/en_US/developer/docs/pdf/archive/PP_subscriptions.pdf

事实上，在我的沙盒帐户上进行测试时，我确实收到了所有参数(包括发票)作为 POST 调用。但是，当我测试实时付款(非沙盒帐户)时，未收到发票。但是，我收到了其他付款信息，例如商品编号、自定义、交易 ID 等。此外，对于实时付款，信息是通过 GET 调用而不是 POST 调用传递的。

总而言之，为什么我从沙盒支付中收到发票参数而不是实时支付。

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" class="message">
    <input type="hidden" name="return" value="<%= (request.isSecure() ? "https" : "http") + "://" + request.getServerName() + "/upgradepayment" %>">
    <input type="hidden" name="rm" value="2">
    <input type="hidden" name="cmd" value="_xclick-subscriptions">
    <input type="hidden" name="hosted_button_id" value="...">
    <input type="hidden" name="business" value="...">
    <input type="hidden" name="item_name" value="...">
    <input type="hidden" name="notify_url" value="..."
    <input type="hidden" name="no_note" value="1">
    <input type="hidden" name="currency_code" value="USD">
    <input type="hidden" name="no_shipping" value="1">
    <input type="hidden" name="a3" value="...">
    <input type="hidden" name="p3" value="1"> 
    <input type="hidden" name="t3" value="M">
    <input type="hidden" name="src" value="1">
    <input type="hidden" name="sra" value="1">
    <input type="hidden" name="invoice" value="...">
    <input type="hidden" name="custom" value="...">
    <input type="hidden" name="item_number" value="...">
    <input id="ok" type="submit" name="submit" value="Pay and Subscribe with PayPal" alt="PayPal - The safer, easier way to pay online" title="PayPal - The safer, easier way to pay online">
</form>

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" class="message">
    <input type="hidden" value="<%= (request.isSecure() ? "https" : "http") + "://" + request.getServerName() + "/upgradepayment" %>" name="return">
    <input type="hidden" name="rm" value="2">
    <input type="hidden" name="cmd" value="_xclick">
    <input type="hidden" name="business" value="...">
    <input type="hidden" name="item_name" value="...">                      
    <input type="hidden" name="amount" value="...">
    <input type="hidden" name="no_shipping" value="0">
    <input type="hidden" name="no_note" value="1">
    <input type="hidden" name="currency_code" value="USD">
    <input type="hidden" name="lc" value="CA">
    <input type="hidden" name="bn" value="PP-BuyNowBF">
    <input type="hidden" name="invoice" value="...">
    <input type="hidden" name="custom" value="...">
    <input type="hidden" name="item_number" value="...">
    <input id="ok" type="submit" name="submit" value="Pay with PayPal" alt="PayPal - The safer, easier way to pay online" title="PayPal - The safer, easier way to pay online">
</form> 

编辑:我通过即时付款通知 (IPN) 收到有关订阅的信息

Answer 1

我刚刚使用下面的代码(您的 HTML，但稍作修改)进行了实时支付:

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" class="message">
    <input type="hidden" name="rm" value="2">
    <input type="hidden" name="cmd" value="_xclick">
    <input type="hidden" name="business" value="<BUSINESS_PAYPAL_EMAIL>">
    <input type="hidden" name="item_name" value="<ITEM_NAME>">
    <input type="hidden" name="notify_url" value="<CALLBACK_URL>"
    <input type="hidden" name="no_note" value="1">
    <input type="hidden" name="currency_code" value="USD">
    <input type="hidden" name="no_shipping" value="1">
    <input type="hidden" name="p3" value="1"> 
    <input type="hidden" name="t3" value="M">
    <input type="hidden" name="src" value="1">
    <input type="hidden" name="sra" value="1">
    <input type="hidden" name="invoice" value="<INVOICE_ID>">
    <input type="hidden" name="custom" value="<CUSTOM_OPTIONAL>">
    <input type="hidden" name="item_number" value="<ITEM_NUMBER>">
    <input type="hidden" name="amount" value="<AMOUNT>">
    <input id="ok" type="submit" name="submit" value="Pay and Subscribe with PayPal" alt="PayPal - The safer, easier way to pay online" title="PayPal - The safer, easier way to pay online">
</form>

我用了https://requestbin.com/收集 IPN 回调。这是发票的屏幕截图: