PayPal从return_url的IPN验证是无效的，但从notify_url被验证

Question

我使用的是Paypal订阅，标准网站按钮。因此，对于这个问题，payment_type是subscr_signup，用于为您的新用户创建用户帐户。我的HTML按钮的形式有值“notify_url”设置为http://domain.com/billing/ipn，“回归”设置为http://domain.com/billing/thankyou，和“RM”设置为2

这样，当用户完成付款后，他/她将被重定向到我们的感谢您的页面以及POST中的IPN数据。我明白了。但是，当我用PayPal验证它时，我收到了INVALID响应。现在，这里有一件奇怪的事情，我们也应该将数据传给我们的IPN notify_url，对吧？我们做了，但这一次，验证它贝宝返回VERIFIED。

我注意到发送的数据有一些差异。

数据RETURN感谢页面 - 无效（JSON-指明分数）

{ 
"txn_type": "subscr_signup", 
"subscr_id": "I-HHTJ0ANUHKRU", 
"last_name": "Ismail", 
"residence_country": "CA", 
"mc_currency": "USD", 
"item_name": "Individual eStudio Plan", 
"business": "business@kengkawan.com", 
"amount3": "99.00", 
"recurring": "1", 
"address_street": "1 Maire-Victorin", 
"payer_status": "verified", 
"payer_email": "customer@kengkawan.com", 
"address_status": "confirmed", 
"first_name": "Iszuddin", 
"receiver_email": "business@kengkawan.com", 
"address_country_code": "CA", 
"payer_id": "LYRHTKFEH45M8", 
"address_city": "Toronto", 
"reattempt": "1", 
"item_number": "IND", 
"address_state": "Ontario", 
"subscr_date": "22:52:19 Oct 29, 2014 PDT", 
"address_zip": "M5A 1E1", 
"charset": "windows-1252", 
"period3": "1 Y", 
"address_country": "Canada", 
"mc_amount3": "99.00", 
"address_name": "Iszuddin Ismail", 
"auth": "AUjfQ4uRNLr22YfSNPGR1YLm5w81cYyFjf9PEu7mVGSLTp2cFD67opAIXJ-Dtsnw4KEXlF0Y268Ks9VmrwpDRrg", 
"form_charset": "UTF-8" 
} 

数据NOTIFY_URL，后端IPN数据 - 恪（JSON-指明分数）

{ 
"txn_type": "subscr_signup", 
"subscr_id": "I-HHTJ0ANUHKRU", 
"last_name": "Ismail", 
"residence_country": "CA", 
"mc_currency": "USD", 
"item_name": "Individual eStudio Plan", 
"business": "business@kengkawan.com", 
"amount3": "99.00", 
"recurring": "1", 
"address_street": "1 Maire-Victorin", 
"verify_sign": "Ajiy6YmBz00sV0oT2S-obuaQ3kehAQO0-T8GJFKpiQnaRzRv7.oJ5Eqy", 
"payer_status": "verified", 
"test_ipn": "1", 
"payer_email": "customer@kengkawan.com", 
"address_status": "confirmed", 
"first_name": "Iszuddin", 
"receiver_email": "business@kengkawan.com", 
"address_country_code": "CA", 
"payer_id": "LYRHTKFEH45M8", 
"address_city": "Toronto", 
"reattempt": "1", 
"item_number": "IND", 
"address_state": "Ontario", 
"subscr_date": "22:52:19 Oct 29, 2014 PDT", 
"address_zip": "M5A 1E1", 
"charset": "windows-1252", 
"notify_version": "3.8", 
"period3": "1 Y", 
"address_country": "Canada", 
"mc_amount3": "99.00", 
"address_name": "Iszuddin Ismail", 
"ipn_track_id": "698ae88a36ef9" 
} 

因为我得到预期响应（VERIFIED或INVALID），我相信我的Paypal IPN的验证码是正确的。但为了以防万一，这里是我的HTML按钮代码。

  <form action="<?php echo $this->url?>" method="post" name="ppform"> 
     <input type="hidden" name="cmd" value="_xclick-subscriptions"> 
     <input type="hidden" name="business" value="<?php echo $this->paypal_email; ?>"> 
     <input type="hidden" name="item_name" value="<?php echo $selected_plan['name'] ?>"> 
     <input type="hidden" name="item_number" value="<?php echo $selected_plan['code'] ?>"> 
     <input type="hidden" name="a3" value="<?php echo $selected_plan['price']; ?>"> <!-- subscription price --> 
     <input type="hidden" name="p3" value="1"> <!-- rebill every x value --> 
     <input type="hidden" name="t3" value="<?php echo $selected_plan['recurring_period'] ?>"> <!-- interval M=month/W=week/Y=year --> 
     <input type="hidden" name="src" value="1"> <!-- Is this recurring 1=yes/0=no --> 
     <input type="hidden" name="currency_code" value="<?php echo $selected_plan['currency'] ?>"> 
     <!-- <input type="image" src="https://www.paypal.com/en_US/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!"> --> 
     <input type="hidden" name="rm" value="2"> 
     <input type="hidden" name="notify_url" value="<?php echo site_url('billing/ipn') ?>"> 
     <input type="hidden" name="return" value="<?php echo site_url('billing/thankyou') ?>"> 

     </form>  

Answer 1

return_url没有收到任何付款/ IPN信息。通常它应该只是一个显示“谢谢，再来”的静态页面。

您应该使用notify_url验证IPN消息。您需要发送收到的付款数据，确切地说与收到的相同。如果您在良好的请求中收到INVALID错误，则应该仔细检查您获取请求的编码，使用php存储并发回。您可以使用PayPal PHP SDK确认付款代码。

请注意IPN在订阅用户注册，支付处理等方面发送了一堆消息。