節點樣本

首先從 NPM 安裝 PayPal 節點模組

npm install paypal-rest-sdk

在應用程式檔案中，新增 SDK 的配置資訊

var paypal = require('paypal-rest-sdk');

var client_id = 'YOUR CLIENT ID';
var secret = 'YOUR SECRET';

paypal.configure({
    'mode': 'sandbox', //sandbox or live
    'client_id': client_id,
    'client_secret': secret
});

我們新增了 SDK 的要求，然後為建立應用程式時獲得的客戶端 ID 和密碼設定變數。然後，我們使用這些詳細資訊配置應用程式，並指定我們正在使用的環境（實時或沙箱）。

接下來，我們設定 JSON 物件，其中包含付款人的付款資訊。

var card_data = {
  "intent": "sale",
  "payer": {
    "payment_method": "credit_card",
    "funding_instruments": [{
      "credit_card": {
        "type": "visa",
        "number": "4417119669820331",
        "expire_month": "11",
        "expire_year": "2018",
        "cvv2": "874",
        "first_name": "Joe",
        "last_name": "Shopper",
        "billing_address": {
          "line1": "52 N Main ST",
          "city": "Johnstown",
          "state": "OH",
          "postal_code": "43210",
          "country_code": "US" }}}]},
  "transactions": [{
    "amount": {
      "total": "7.47",
      "currency": "USD",
      "details": {
        "subtotal": "7.41",
        "tax": "0.03",
        "shipping": "0.03"}},
    "description": "This is the payment transaction description." 
}]};

新增 intent 的 sale 和 payment_method 的 credit_card。接下來，在 funding_instruments 下新增信用卡的卡和地址詳細資訊，以及根據 transactions 收取的金額。可以在此處放置多個事務物件。

最後，我們向 payment.create(...) 發出請求，傳遞我們的 card_data 物件，以便處理付款。

paypal.payment.create(card_data, function(error, payment){
  if(error){
    console.error(error);
  } else {
    console.log(payment);
  }
});

如果事務成功，我們應該看到類似於以下內容的響應物件：

{
  "id": "PAY-9BS08892W3794812YK4HKFQY",
  "create_time": "2016-04-13T19:49:23Z",
  "update_time": "2016-04-13T19:50:07Z",
  "state": "approved",
  "intent": "sale",
  "payer": {
    "payment_method": "credit_card",
    "funding_instruments": [
      {
        "credit_card": {
          "type": "visa",
          "number": "xxxxxxxxxxxx0331",
          "expire_month": "11",
          "expire_year": "2018",
          "first_name": "Joe",
          "last_name": "Shopper",
          "billing_address": {
            "line1": "52 N Main ST",
            "city": "Johnstown",
            "state": "OH",
            "postal_code": "43210",
            "country_code": "US"
          }
        }
      }
    ]
  },
  "transactions": [
    {
      "amount": {
        "total": "7.47",
        "currency": "USD",
        "details": {
          "subtotal": "7.41",
          "tax": "0.03",
          "shipping": "0.03"
        }
      },
      "description": "This is the payment transaction description.",
      "related_resources": [
        {
          "sale": {
            "id": "0LB81696PP288253D",
            "create_time": "2016-04-13T19:49:23Z",
            "update_time": "2016-04-13T19:50:07Z",
            "amount": {
              "total": "7.47",
              "currency": "USD"
            },
            "state": "completed",
            "parent_payment": "PAY-9BS08892W3794812YK4HKFQY",
            "links": [
              {
                "href": "https:\/\/api.sandbox.paypal.com\/v1\/payments\/sale\/0LB81696PP288253D",
                "rel": "self",
                "method": "GET"
              },
              {
                "href": "https:\/\/api.sandbox.paypal.com\/v1\/payments\/sale\/0LB81696PP288253D\/refund",
                "rel": "refund",
                "method": "POST"
              },
              {
                "href": "https:\/\/api.sandbox.paypal.com\/v1\/payments\/payment\/PAY-9BS08892W3794812YK4HKFQY",
                "rel": "parent_payment",
                "method": "GET"
              }
            ],
            "fmf_details": {
              
            },
            "processor_response": {
              "avs_code": "X",
              "cvv_code": "M"
            }
          }
        }
      ]
    }
  ],
  "links": [
    {
      "href": "https:\/\/api.sandbox.paypal.com\/v1\/payments\/payment\/PAY-9BS08892W3794812YK4HKFQY",
      "rel": "self",
      "method": "GET"
    }
  ],
  "httpStatusCode": 201
}

在這個返回物件中，擁有 state 的 approved 告訴我們事務是成功的。在 links 物件下有許多 HATEOAS 連結，它們提供了可以對剛剛執行的操作採取的潛在後續步驟。在這種情況下，我們可以通過向提供的 self 端點發出 GET 請求來檢索有關付款的資訊。