我正在开发一个集成到PayPal的REST API中的PHP应用程序。我正确处理事务并将事务ID保存到MySQL数据库中。我现在正在尝试退还销售，但无法让它停止提供“传入JSON请求不映射到API请求”错误。有没有人对如何使这个工作有任何建议？
我在代码中留下了一些关于结果的评论。我觉得有点迷失方向让这个工作。任何帮助将不胜感激。
我一直在关注此处的文档： https://developer.paypal.com/docs/integration/direct/payments/refund-payment/
我可能正在努力使该请求适应PHP。
我找到了这段代码： https://github.com/paypal/PayPal-PHP-SDK/blob/master/sample/payments/RefundCapture.php
但它要求“一个文件树，对于一个简单的退款请求似乎有点过分。
<?php
require_once(dirname(__FILE__) . '/paypalSDK/autoload.php'); // require paypal files
require_once(dirname(__FILE__) . '/paypalSDK/paypal/rest-api-sdk-php/sample/common.php'); // require paypal files
// call required stuff
use PayPal\Api\Address;
use PayPal\Api\Amount;
use PayPal\Api\Details;
use PayPal\Api\ExecutePayment;
use PayPal\Api\FundingInstrument;
use PayPal\Api\Item;
use PayPal\Api\ItemList;
use PayPal\Api\Payer;
use PayPal\Api\Payment;
use PayPal\Api\PaymentCard;
use PayPal\Api\PaymentExecution;
use PayPal\Api\Transaction;
use PayPal\Api\Capture;
use PayPal\Api\Refund;
use PayPal\Api\RefundRequest;
use PayPal\Api\Sale;
$orderID = $_GET['order_id']; // order ID we wish to refund
// pull the details from the database so we have the transaction refund ID
$refQ = mysql_query("SELECT * FROM orders WHERE orders_ID = $orderID", $db);
$refC = mysql_num_rows($refQ);
if(!empty($refC)){
$refR = mysql_fetch_assoc($refQ);
$refNumber = $refR['orders_transaction_ref']; // paypal transaction ID
$FinalTotal = $refR['orders_order_total']; // order total
// paypal credentials
$apiContext = new \PayPal\Rest\ApiContext(
new \PayPal\Auth\OAuthTokenCredential(
'abc',
'xyz'
)
);
$apiContext->setConfig(array('mode' => 'live',)); // live use, not sandbox
//$amount = new Amount(); // commenting these out seemingly has no effect
//$amount->setCurrency("USD") // commenting these out seemingly has no effect
// ->setTotal($FinalTotal); // commenting these out seemingly has no effect
$refund = new Refund(); // if I comment these 2 lines out, I get "refund cannot be null"
$refund->setAmount($FinalTotal); // if I comment these 2 lines out, I get "refund cannot be null"
$sale = new Capture(); // if I comment these 2 lines out, I get "Call to a member function refund() on a non-object"
$sale->setId($refNumber); // if I comment these 2 lines out, I get "Call to a member function refund() on a non-object"
$refundRequest = new RefundRequest(); // commenting these out seemingly has no effect
$refundRequest->setAmount($FinalTotal); // commenting these out seemingly has no effect
//$captureRefund = $sale->refundCapturedPayment($refundRequest, $apiContext); // failure, error 400
try {
$sale->refund($refund, $apiContext);
//$sale->refundCapturedPayment($refund, $apiContext); // failure, error 400
} catch (Exception $ex) {
echo '<pre style="font-size:16px;">';
var_dump($ex);
echo '</pre>';
exit();
die;
}
}
更新3/8/2017 @ 12:23 pm
我似乎已经取得了“一些”的进步，尽管我松散地使用了这个术语。州政府将以“已完成”的方式返回，但退款实际上并未发生。它也没有像样本演示那样返回父付款ID。有什么想法吗？我仍然试图让它发挥作用。
这是我目前从PayPal获得的结果：
object(PayPal\Api\Refund)#3 (1) {
["_propMap":"PayPal\Common\PayPalModel":private]=>
array(5) {
["id"]=>
string(17) "123456789123456789"
["create_time"]=>
string(20) "2017-03-06T20:56:32Z"
["state"]=>
string(9) "completed"
["amount"]=>
object(PayPal\Api\Amount)#9 (1) {
["_propMap":"PayPal\Common\PayPalModel":private]=>
array(3) {
["total"]=>
string(4) "0.02"
["currency"]=>
string(3) "USD"
["details"]=>
object(PayPal\Api\Details)#13 (1) {
["_propMap":"PayPal\Common\PayPalModel":private]=>
array(1) {
["subtotal"]=>
string(4) "0.02"
}
}
}
}
["links"]=>
array(1) {
[0]=>
object(PayPal\Api\Links)#17 (1) {
["_propMap":"PayPal\Common\PayPalModel":private]=>
array(3) {
["href"]=>
string(59) "https://api.paypal.com/v1/payments/refund/123456789123456789"
["rel"]=>
string(4) "self"
["method"]=>
string(3) "GET"
}
}
}
}
}
以下是目前返回上述响应的代码......
require_once(dirname(__FILE__) . '/paypalSDK/autoload.php'); // require paypal files
require_once(dirname(__FILE__) . '/paypalSDK/paypal/rest-api-sdk-php/sample/bootstrap.php'); // require paypal files
require_once(dirname(__FILE__) . '/paypalSDK/paypal/rest-api-sdk-php/sample/common.php'); // require paypal files
// call required stuff
use PayPal\Api\Address;
use PayPal\Api\Amount;
use PayPal\Api\Details;
use PayPal\Api\ExecutePayment;
use PayPal\Api\FundingInstrument;
use PayPal\Api\Item;
use PayPal\Api\ItemList;
use PayPal\Api\Payer;
use PayPal\Api\Payment;
use PayPal\Api\PaymentCard;
use PayPal\Api\PaymentExecution;
use PayPal\Api\Transaction;
use PayPal\Api\Capture;
use PayPal\Api\Refund;
use PayPal\Api\RefundRequest;
use PayPal\Api\Sale;
$orderID = $_GET['order_id']; // internal order ID we wish to refund
// pull the details from database so we have the PayPal transction ID
$refQ = mysql_query("SELECT * FROM orders WHERE orders_ID = $orderID", $db);
$refC = mysql_num_rows($refQ);
if(!empty($refC)){
$refR = mysql_fetch_assoc($refQ);
$refNumber = $refR['orders_transaction_ref']; // PayPal transaction ID
// attempted 'PAY-' ID, results in "Requested resource ID was not found."
// $refNumber = $refR['orders_payment_ref']; // ex. PAY-123456789012345678901234
$FinalTotal = $refR['orders_order_total']; // order total
// paypal credentials
$apiContext = new \PayPal\Rest\ApiContext(
new \PayPal\Auth\OAuthTokenCredential(
'abc',
'xyz'
)
);
$apiContext->setConfig(array('mode' => 'live',)); // live use, not sandbox
//$amount = new Amount(); // commenting these out seemingly has no effect
//$amount->setCurrency("USD") // commenting these out seemingly has no effect
// ->setTotal($FinalTotal); // commenting these out seemingly has no effect
/*
// attempted code
// ### Refund object
$refund = new Refund();
//$refund = new RefundRequest();
$refund->setAmount($FinalTotal);
*/
$refund = new Refund();
$refund->setId($refNumber);
$refund->setSaleId($refNumber);
$refund->setAmount($FinalTotal);
$refund->setReason("Testing refund code");
//$refund->get($refNumber, $apiContext);
// Attempted code, didn't work
// https://stackoverflow.com/questions/18927591/paypal-api-how-to-get-sale-id-and-refund-payment-made-via-paypal
// Fatal error: Uncaught exception 'InvalidArgumentException' with message 'paymentId cannot be null' in /home/cartridgeworkspl/public_html/cfx_controllers/paypalSDK/paypal/rest-api-sdk-php/lib/PayPal/Validation/ArgumentValidator.php:25 Stack trace: #0
// $payments = Payment::get($refNumber, $apiContext);
// $payments->getTransactions();
// $obj = $payments->toJSON();//I wanted to look into the object
// $paypal_obj = json_decode($obj);//I wanted to look into the object
// $transaction_id = $paypal_obj->transactions[0]->related_resources[0]->sale->id;
// $this->refund($transaction_id);//Call your custom refund method
try {
//var_dump($refund);
$refundResponse = Refund::get($refNumber, $apiContext);
echo '<pre>';
var_dump($refundResponse);
echo '</pre>';
echo $refundResponse->getState();
echo $refundResponse->getReasonCode();
} catch (Exception $ex) {
// NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
ResultPrinter::printError("Get Payment", "Payment", null, null, $ex);
exit(1);
}
}
任何帮助都会受到极大的赞赏。
答案 0 :(得分：2)
文档：https://developer.paypal.com/docs/api/quickstart/refund-payment/#set-the-refund-object
要进行付款和退款，请使用： paypal / rest-api-sdk-php
首先，当您付款时，必须为“ 销售”。
[...]
$payment = new Payment();
$payment->setIntent('sale')
->setPayer($payer)
->setRedirectUrls($redirect_urls)
->setTransactions(array($transaction));
[...]
PayPal将返回带有“ paymentId ”值的付款，您需要保存它。
退款示例。
//Previosly saved payments ID.
$paymentId = 'PI_Fv54vfd45';
//Create API connection
$apiContext = new ApiContext(new OAuthTokenCredential($paypalConf['client_id'], $paypalConf['secret']));
$apiContext->setConfig($paypalConf['settings']);
//Get sale from payment
$paypalPayment = new Payment();
$paymentInfo = $paypalPayment->get($paymentId, $apiContext);
$transactions = $paymentInfo->getTransactions();
if(empty($transactions[0])){
return false;
}
$relatedResources = $transactions[0]->getRelatedResources();
if(empty($relatedResources[0])){
return false;
}
$sale = $relatedResources[0]->getSale();
$refund = new Refund();
$amt = (new Amount())->setTotal(100)->setCurrency('EUR');
$refund->setAmount($amt);
$refund->setReason('Sale refund');
$refundedSale = $sale->refund($refund, $apiContext);
return ($refundedSale->getState() === 'completed');
答案 1 :(得分：0)
我认为问题在于，当您提交退款时，您还必须设置API上下文。第一个上下文建立与API的连接，然后设置销售ID。我相信你必须为该销售ID设置API上下文，但我不是100％。
答案 2 :(得分：0)
我设法完成了它。以下是通过REST API成功退还PayPal订单的代码。
<?php
require_once(dirname(__FILE__) . '/paypalSDK/autoload.php'); // require paypal files
require_once(dirname(__FILE__) . '/paypalSDK/paypal/rest-api-sdk-php/sample/bootstrap.php'); // require paypal files
require_once(dirname(__FILE__) . '/paypalSDK/paypal/rest-api-sdk-php/sample/common.php'); // require paypal files
// call required PayPal functionality
use PayPal\Api\Address;
use PayPal\Api\Amount;
use PayPal\Api\Details;
use PayPal\Api\ExecutePayment;
use PayPal\Api\FundingInstrument;
use PayPal\Api\Item;
use PayPal\Api\ItemList;
use PayPal\Api\Payer;
use PayPal\Api\Payment;
use PayPal\Api\PaymentCard;
use PayPal\Api\PaymentExecution;
use PayPal\Api\Transaction;
use PayPal\Api\Capture;
use PayPal\Api\Refund;
use PayPal\Api\RefundRequest;
use PayPal\Api\Sale;
$orderID = $_GET['order_id']; // internal order ID we wish to refund
// pull the details from database so we have the PayPal transction ID
$refQ = mysql_query("SELECT * FROM orders WHERE orders_ID = $orderID", $db);
$refC = mysql_num_rows($refQ);
if(!empty($refC)){
$refR = mysql_fetch_assoc($refQ); // array of order data
$refNumber = $refR['orders_transaction_ref']; // PayPal transaction ID
$FinalTotal = $refR['orders_order_total']; // order total
// get PayPal access token via cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.paypal.com/v1/oauth2/token");
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Accept: application/json',
'Accept-Language: en_US'
));
curl_setopt($ch, CURLOPT_USERPWD, 'USER:PASS');
curl_setopt($ch, CURLOPT_POSTFIELDS, 'grant_type=client_credentials');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch);
$json = json_decode($output);
$token = $json->access_token; // this is our PayPal access token
// refund PayPal sale via cURL
$header = Array(
"Content-Type: application/json",
"Authorization: Bearer $token",
);
$ch = curl_init("https://api.paypal.com/v1/payments/sale/$refNumber/refund");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, '{}');
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$res = json_decode(curl_exec($ch));
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// if res has a state, retrieve it
if(isset($res->state)){
$state = $res->state;
}else{
$state = NULL; // otherwise, set to NULL
}
// if we have a state in the response...
if($state == 'completed'){
// the refund was successful
}else{
// the refund failed
$errorName = $res->name; // ex. 'Transaction Refused.'
$errorReason = $res->message; // ex. 'The requested transaction has already been fully refunded.'
}
}
?>