PayPal Smart Button 服务器端实现 - 捕获交易的问题 - PHP

Question

我一直在尝试完成 PayPal 智能按钮的服务器端实现，但在捕获交易时遇到了困难。我正在使用沙盒帐户。我不确定问题是否出在订单 ID 上。

我在尝试捕获交易时得到的响应：

Fatal error: Uncaught PayPalHttp\HttpException: 
{"name":"RESOURCE_NOT_FOUND",
 "details[{"field":"order_id",
     "value":"$orderId",
     "location":"path",
     "issue":"INVALID_RESOURCE_ID",
     "description":"Specified resource ID does not exist. Please check the resource ID and try again."}],
 "message":"The specified resource does not exist.",
 "debug_id":"df5cdbddfc1ea",
 "links":[{"href":"https://developer.paypal.com/docs/api/orders/v2/#error-INVALID_RESOURCE_ID",
 "rel":"information_link","method":"GET"}]} in /usr/local/ampps/www/shop-files/vendor/paypal/paypalhttp/lib/PayPalHttp/HttpClient.php:215
 Stack trace: #0 /usr/local/ampps/www/shop-files/vendor/paypal/paypalhttp/lib/PayPalHttp/HttpClient.php(100): PayPalHttp\HttpClient->parseResponse(Object(PayPalHttp\Curl)) 
#1 /usr/local/ampps/www/shop-files/capture-transaction.php(29): PayPalHttp\HttpClient->execute(Object(PayPalCheckoutSdk\Orders\OrdersCaptureRequest))
 #2 /usr/local/ampps/www/shop-files/capture-transaction.php(62): Sample\CaptureIntentExamples\CaptureOrder::captureOrder('$orderId', in /usr/local/ampps/www/shop-files/vendor/paypal/paypalhttp/lib/PayPalHttp/HttpClient.php on line 215

我在创建事务时得到的响应：

{
    "id": "1XB529992P492602W",
    "intent": "CAPTURE",
    "status": "CREATED",
    "purchase_units": [
        {
            "reference_id": "default",
            "amount": {
                "currency_code": "GBP",
                "value": "12.00"
            },
            "payee": {
                "email_address": "sb-lxq8v1263761@business.example.com",
                "merchant_id": "SUHPR7WSYJPJQ"
            }
        }
    ],
    "create_time": "2020-10-14T08:36:00Z",
    "links": [
        {
            "href": "https://api.sandbox.paypal.com/v2/checkout/orders/1XB529992P492602W",
            "rel": "self",
            "method": "GET"
        },
        {
            "href": "https://www.sandbox.paypal.com/checkoutnow?token=1XB529992P492602W",
            "rel": "approve",
            "method": "GET"
        },
        {
            "href": "https://api.sandbox.paypal.com/v2/checkout/orders/1XB529992P492602W",
            "rel": "update",
            "method": "PATCH"
        },
        {
            "href": "https://api.sandbox.paypal.com/v2/checkout/orders/1XB529992P492602W/capture",
            "rel": "capture",
            "method": "POST"
        }
    ]
}

我用于创建交易的 php 代码：

<?php
namespace Sample\CaptureIntentExamples;
session_start();
require __DIR__ . '/vendor/autoload.php';

use Sample\PayPalClient;
use PayPalCheckoutSdk\Orders\OrdersCreateRequest;
require 'paypal-client.php';

class CreateOrder {
  public static function createOrder() {
    $request = new OrdersCreateRequest();
    $request->prefer('return=representation');
    $request->body = self::buildRequestBody();
 
    $client = PayPalClient::client();
    $response = $client->execute($request);
 
    echo json_encode($response->result, JSON_PRETTY_PRINT);

    return $response;
  }
    private static function buildRequestBody() {
      return array(
        'intent'=>'CAPTURE',
        'application_context'=>
          array(
            'return_url'=>'https://localhost/basket.php',
            'cancel_url'=>'https://localhost/basket.php'
          ),
        'purchase_units'=>
          array(
            0=>
              array(
                'amount'=>
                  array(
                    'currency_code'=>'GBP',
                    'value'=>$_SESSION['total']
                  )             
              )
          )
      );
    }
}

if (!count(debug_backtrace()))
{
  CreateOrder::createOrder(true);
}
?>

捕获交易的代码：

<?php

namespace Sample\CaptureIntentExamples;

require __DIR__ . '/vendor/autoload.php';
use Sample\PayPalClient;
use PayPalCheckoutSdk\Orders\OrdersCaptureRequest;
require 'paypal-client.php';

class CaptureOrder
{ 
  public static function captureOrder($orderId)
  {
    $request = new OrdersCaptureRequest($orderId);

    $client = PayPalClient::client();
    $response = $client->execute($request);
  
      echo json_encode($response->result, JSON_PRETTY_PRINT);

    return $response;
  }
}
if (!count(debug_backtrace()))
{
  CaptureOrder::captureOrder('$orderId', true);
}
?>

JavaScript：

createOrder: function(data) {
      return fetch('/shop-files/create-order.php', {
        method: 'post',
      }).then(function(res) {
        return res.json();
      }).then(function(orderData) {
        return orderData.id;
      });
    },
    onShippingChange: function(data, actions) {
      if (data.shipping_address.country_code !== "GB") {
        return actions.reject();
      }
      return actions.resolve();
    },
    onApprove: function(data) {
      return fetch('/shop-files/capture-transaction.php', {
        method: 'post',
        headers: {
          'content-type': 'application/json'
        },
      }).then(function(res) {
          return res.json();
      }).then(function(orderData) {
          if (errorDetail && errorDetail.issue === 'INSTRUMENT_DECLINED') {
              return actions.restart();
          }
          if (errorDetail) {
              var msg = 'Sorry, your transaction could not be processed.';
              if (errorDetail.description) msg += '\n\n' + errorDetail.description;
              if (orderData.debug_id) msg += ' (' + orderData.debug_id + ')';
              return alert(msg);
          }
          alert('Transaction completed by ' + orderData.payer.name.given_name);
      });
    }
  }).render('#paypal-button-container');

Answer 1

这是你的问题行：

CaptureOrder::captureOrder('$orderId', true);

您实际上是在将单引号内的文本字符串：'$orderId'发送到 PayPal。 $ 和这 7 个字母将发送到 PayPal。您没有发送您的 $orderId 变量的内容。

去掉你的字符串引号：

CaptureOrder::captureOrder($orderId, true);

---

顺便说一下，关于 PHP（顺便说一下，像 bash 之类的 shell 语言）的一些细节你可能不知道：

注意：与双引号和heredoc语法不同，特殊字符的变量和转义序列在出现在单引号字符串中时不会被扩展。

参考：https://www.php.net/manual/en/language.types.string.php#language.types.string.parsing

基本上，双引号和单引号在这方面表现不同。

Answer 2

这是我添加到用于捕获交易以获取订单 ID 的代码中的内容，位于 require 'paypal-client.php'; 下方：

// Get JSON row data from the request
$json = file_get_contents('php://input');
// Convert JSON string into array
$data = json_decode($json, true);
// Get the value of the key 'orderID'
$orderId = $data['orderID'];

我不确定 cmets 是否准确解释了正在发生的事情，因此欢迎任何更正。

此外，JavaScript 代码与此有点不同：

body: JSON.stringify({
  orderID: data.orderID
})

添加到下方

headers: {
  'content-type': 'application/json'
},

它现在正在工作。非常感谢 Preston PHX 再次为我指明了正确的方向。