PayPal REST API - 购买后状态不会改变

Question

所以我注意到在检查付款状态时

GET /v1/payments/payment/<Payment-Id>

PayPal 响应的“状态”不会从“已创建”改变，即使在 PayPal 用户购买了商品之后也是如此。直到我执行付款，状态才变为“已批准”。

这使得很难区分客户实际批准的付款和仍在处理中的付款，因为它们都处于“已创建” 状态。 json 响应中的唯一区别是它似乎包含 shipping_address 一旦付款实际上已被批准。不过，我不确定这是表示差异的标准方法。

在使用上述 REST API 调用时判断客户是否实际批准 PayPal 交易的标准方法是什么？

注意:我已经设置并运行了 PHP 回调脚本。我正在开发一个故障安全系统，该系统会不断检查数据库条目以确保执行了批准的付款(以防出现某些系统故障)。

我想我可以使用我从 CLASSIC API 设置的 IPN 回调脚本，但似乎 REST API 和 CLASSIC API 是不兼容，因为 IPN 回调将不包含事务 ID 或任何有用的必要信息。

似乎在使用 REST API 时，如果您错过了对网络服务器的重定向调用，那么该事务将永远丢失。

Answer 1

正确的是，您不会从查找 API 响应中的 state 字段中得知已批准的付款，相反，您会在JSON 正文，该信息将为您指示已批准的支付资源。

这是客户重定向(用户批准)之前/之后相同 PAY-ID 的 JSON 响应

1. 查找付款/v1/payments/payment/PAY-9J02491382988403BK3BMC6I(用户批准前):

   {
      "id": "PAY-9J02491382988403BK3BMC6I",
      "intent": "sale",
      "state": "created",
      "cart": "07U14103P0008801U",
      "transactions": [   {
         "amount":       {
            "total": "80.00",
            "currency": "USD"
         },
         "payee": {"email": "USM@email.com"},
         "invoice_number": "55a460ff696br",
         "item_list":       {
            "items":          [
                           {
                  "name": "Test Ticket 1",
                  "sku": "55a460ff65f13",
                  "price": "10.00",
                  "currency": "USD",
                  "quantity": 1
               },
                           {
                  "name": "Test Ticket 2",
                  "sku": "55a460ff66c7a",
                  "price": "20.00",
                  "currency": "USD",
                  "quantity": 2
               },
                           {
                  "name": "Test Ticket 3",
                  "sku": "55a460ff66ce2",
                  "price": "10.00",
                  "currency": "USD",
                  "quantity": 3
               }
            ],
            "shipping_address":          {
               "recipient_name": "Test Name",
               "line1": "Main St 1",
               "city": "San Jose",
               "state": "CA",
               "postal_code": "95131",
               "country_code": "US"
            }
         },
         "related_resources": [],
         "notify_url": "https://bt-pduan-1.c9.io/ipn.php"
      }],
      "redirect_urls":    {
         "return_url": "http://localhost:80/getpaypal?paymentId=PAY-9J02491382988403BK3BMC6I",
         "cancel_url": "http://localhost:80/cancel"
      },
      "create_time": "2016-02-16T06:28:08Z",
      "update_time": "2016-02-16T06:28:08Z",
      "links":    [
               {
            "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-9J02491382988403BK3BMC6I",
            "rel": "self",
            "method": "GET"
         },
               {
            "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-9J02491382988403BK3BMC6I/execute",
            "rel": "execute",
            "method": "POST"
         },
               {
            "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-07U14103P0008801U",
            "rel": "approval_url",
            "method": "REDIRECT"
         }
      ]
   }
   

2. 在用户批准后查找付款(我正在删除一些 JSON 内容，例如交易/url 数组以提高可读性):

   {
      "id": "PAY-9J02491382988403BK3BMC6I",
      "intent": "sale",
      "state": "created",
      "cart": "07U14103P0008801U",
      "payer":    {
         "payment_method": "paypal",
         "status": "VERIFIED",
         "payer_info":       {
            "email": "USP@email.com",
            "first_name": "Payer",
            "last_name": "US",
            "payer_id": "8FMFQ2KVYYHTY",
            "shipping_address":          {
               "recipient_name": "Test Name",
               "line1": "Main St 1",
               "city": "San Jose",
               "state": "CA",
               "postal_code": "95131",
               "country_code": "US"
            },
            "phone": "408-743-9795",
            "country_code": "US",
            "billing_address":          {
               "line1": "1 Main St",
               "line2": "",
               "city": "San Jose",
               "state": "CA",
               "postal_code": "95131",
               "country_code": "US"
            }
         }
      },
      "transactions": [],
      "redirect_urls": {},
      "create_time": "2016-02-16T06:28:08Z",
      "update_time": "2016-02-16T06:28:08Z",
      "links": []
   }
   

通过检查记录的 PAY-ID 在 API 响应中寻找 payer 对象，您将能够保存订单并继续执行调用，以防在客户返回重定向中遗漏它。

此外，在这种情况下，IPN 或 webhook 都无济于事，因为它们是由交易级事件触发的异步消息，这意味着在执行付款之前不会有通知。