通过 Paypal Express Checkout REST API 定期付款

Question

我的目标是使用“paypal”作为我们 SaaS 的付款方式来设置 6 个月和 12 个月的定期订阅。我正在使用其余 API，我找不到的一件事是如何使用 PayPal 的其余 API（我读过的是现在可能）。这就是我们所处的位置：

我有一个正在使用的advanced server integration，用于使用 Paypal 的 Express Checkout REST API 进行付款。

我按照上面链接中解释的代码示例以及来自贝宝的this example 中显示的内容创建了一次性销售。我尝试切换两步流程，转而包含计费协议创建和执行调用，但是打开以让用户登录到 paypal 的轻型窗口停止并显示错误消息“事情似乎没有目前正在工作。请稍后再试”。这是我的 javascript 代码，它与工作示例几乎完全相同，但路径不同。

paypal.Button.render({

    // Set your environment

    env: 'sandbox', // sandbox | production

    // Wait for the PayPal button to be clicked
    payment: function(resolve, reject) {

    // Make a call to the merchant server to set up the payment
        console.log("button clicked")
        return paypal.request.post('/payment/paypal/subscription', {amount: '0.02'})
            .then(function(res) {
                resolve(res.payToken); #--WHERE I'M GOING WRONG
            })
            .catch(function(err) { reject(err); });
    },

    // Wait for the payment to be authorized by the customer
    onAuthorize: function(data) {

        // Make a call to the merchant server to execute the payment
        return paypal.request.post('/payment/paypal/execute', {
            data: data,
            paymentID: data.paymentID,
            payerID: data.payerID
        }).then(function (res) {
            if (res.state == "active") {
                document.querySelector('#paypal-button-container-server').innerText = 'Payment Complete!';
            } else {
                console.log(res);
                alert("Payment could not be approved, please try again.")
            }
        });
    }

}, '#paypal-button-container-server');

我可以看出我在支付功能上出了问题，即与resolve(res.payToken) 在线。我不知道我应该将 v1/payments/billing-agreements 响应中的哪些数据传递给此函数，但我尝试了 profile_id 和 approval_url（实际的 href - "href": " https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-XXXXXXXXXXXXX")。

我哪里出错了？如果这是可能的，我觉得我是一个远离完成这项工作的工作示例，但我想知道它是否不能像我那样做（在这种情况下，它可能需要通过 Payflow 完成?)。

注意：我完全了解计费协议和计费配置文件，我的问题不在于 REST API。除了有效的一次性销售实施之外，我还可以制定所有必要的计费配置文件/协议（通过 Postman 验证）。

下面是v1/payments/billing-agreements沙盒调用的响应，任何人都可以指出其中的正确数据。

{
  "name": "Magazine Subscription",
  "description": "Monthly subscription with a regular monthly payment definition and two-month trial payment definition.",
  "plan": {
    "id": "P-XXXXXXXXXXXXXXXXXXX",
    "state": "ACTIVE",
    "name": "1 Month Recurring",
    "description": "A recurring payment plan for customers who sign a 1-month contract",
"type": "FIXED",
"payment_definitions": [
  {
    "id": "PD-924GIUJ3MWQ32E22348G0018",
    "name": "Regular Payment Definition",
    "type": "REGULAR",
    "frequency": "Month",
    "amount": {
      "currency": "USD",
      "value": "150"
    },
    "cycles": "1",
    "charge_models": [
      {
        "id": "CHM-940183BIUJ3MWQ5VK14226VH",
        "type": "TAX",
        "amount": {
          "currency": "USD",
          "value": "10"
        }
      }
    ],
    "frequency_interval": "1"
  },
  {
    "id": "PD-5604RIUJ3MWQ4Y4221782C61",
    "name": "Trial Payment Definition",
    "type": "TRIAL",
    "frequency": "Month",
    "amount": {
      "currency": "USD",
      "value": "120"
    },
    "cycles": "1",
    "charge_models": [
      {
        "id": "CHM-640401IUJ3MWQ64W07759LB2",
        "type": "TAX",
        "amount": {
          "currency": "USD",
          "value": "10"
        }
      }
    ],
    "frequency_interval": "1"
  }
],
"merchant_preferences": {
  "setup_fee": {
    "currency": "USD",
    "value": "0"
  },
  "max_fail_attempts": "3",
  "return_url": "http://localhost:8000/payment/success",
  "cancel_url": "http://localhost:8000/payment/new",
  "auto_bill_amount": "NO",
  "initial_fail_amount_action": "CONTINUE"
}
  },
  "links": [
{
  "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-XXXXXXXXXXXXXX",
  "rel": "approval_url",
  "method": "REDIRECT"
},
{
  "href": "https://api.sandbox.paypal.com/v1/payments/billing-agreements/EC-XXXXXXXXXXXXX/agreement-execute",
  "rel": "execute",
  "method": "POST"
}
  ],
  "start_date": "2017-12-22T09:13:49Z"
}

Answer 1

REST API 仍会传回快速结帐 URL，但为了将其与 checkout.js 前端集成一起使用，您需要传回在批准 URL 中找到的令牌。您可以解析此 URL 并获取服务器上的令牌部分并将其返回或在调用 resolve 方法之前将其传递。

即

approval_url = { 
    "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-XXXXXXXXXXXXX" 
}

var token = "EC-XXXXXXXXXXXXX";
resolve(token);