详解Laravel接入paypal支付

互联网 20-6-15

PayPal

PayPal, 全球众多用户使用的国际贸易支付工具, 能够轻松完成境外收付款！一个账户全球通用, 成为PayPal商家, 就能在任何地方接受更多付款方式。

下载paypal sdk

在 composer.json 中加入 “paypal/rest-api-sdk-php” : “1.7.4”，如图：

执行composer update

注册开发者账号，创建测试应用，测试账户

地址：

https://developer.paypal.com

创建沙盒测试账户

账号后台(可以看到自己的消费记录):

https://www.sandbox.paypal.com/signin?returnUri=https%3A%2F%2Fwww.sandbox.paypal.com%2Fmyaccount%2Fsummary&state=%2F

创建应用

查看应用配置

点击创建的应用，查看配置Client ID,Secret,后面请求接口需要用到，sandbox为测试环境，live为线上环境

新建测试账号

可设置金额及密码

接入代码

下单逻辑

<?php namespace App\Http\Controllers\Api; use Illuminate\Http\Request; use App\Http\Controllers\Controller; use PayPal\Api\Payer; use PayPal\Api\Item; use PayPal\Api\ItemList; use PayPal\Api\Details; use PayPal\Api\Amount; use PayPal\Api\Transaction; use PayPal\Api\RedirectUrls; use PayPal\Api\Payment; use PayPal\Auth\OAuthTokenCredential; use PayPal\Exception\PayPalConnectionException; use PayPal\Rest\ApiContext; use PayPal\Api\PaymentExecution; class paypalController extends Controller {     const clientId = 'xxxxxxxxx';//应用Client ID     const clientSecret = 'xxxxxxxx';//Secret     const accept_url = 'http://xxx.laravel.com/Api/paypal/Callback'; //支付成功和取消交易的跳转地址     const Currency = 'USD';//货币单位     protected $PayPal;     public function __construct()     {         $this->PayPal = new ApiContext(             new OAuthTokenCredential(                 self::clientId,                 self::clientSecret             )         );  //如果是沙盒测试环境不设置，请注释掉 //        $this->PayPal->setConfig( //            array( //                'mode' => 'live', //            ) //        );     }     /**      * @param      * $product 商品      * $price 价钱      * $shipping 运费      * $description 描述内容      */     public function pay()     {         $product = '1123';         $price = 1;         $shipping = 0;         $description = '1123123';         $paypal = $this->PayPal;         $total = $price + $shipping;//总价         $payer = new Payer();         $payer->setPaymentMethod('paypal');         $item = new Item();         $item->setName($product)->setCurrency(self::Currency)->setQuantity(1)->setPrice($price);          $itemList = new ItemList();         $itemList->setItems([$item]);         $details = new Details();         $details->setShipping($shipping)->setSubtotal($price);         $amount = new Amount();         $amount->setCurrency(self::Currency)->setTotal($total)->setDetails($details);         $transaction = new Transaction();         $transaction->setAmount($amount)->setItemList($itemList)->setDescription($description)->setInvoiceNumber(uniqid());         $redirectUrls = new RedirectUrls();         $redirectUrls->setReturnUrl(self::accept_url . '?success=true')->setCancelUrl(self::accept_url . '/?success=false');         $payment = new Payment();         $payment->setIntent('sale')->setPayer($payer)->setRedirectUrls($redirectUrls)->setTransactions([$transaction]);         try {             $payment->create($paypal);         } catch (PayPalConnectionException $e) {             echo $e->getData();             die();         }         $approvalUrl = $payment->getApprovalLink();         header("Location: {$approvalUrl}");     }

走完下单逻辑会跳转到paypal的支付页面，第一次需要输入账号密码，如图：

进入支付页面，选择Paypal余额支付，支付完成或取消交易会自动跳转到你下单时传的跳转地址，并会传两个参数 paymentId（paypal订单号），PayerID（用户id）,你可以根据你的业务逻辑写对应逻辑，一般同步回调确认用户是否付款，异步回调处理业务逻辑

同步回调

 /**      * 回调      */     public function Callback()     {         $success = trim($_GET['success']);         if ($success == 'false' && !isset($_GET['paymentId']) && !isset($_GET['PayerID'])) {             echo '取消付款';die;         }         $paymentId = trim($_GET['paymentId']);         $PayerID = trim($_GET['PayerID']);         if (!isset($success, $paymentId, $PayerID)) {             echo '支付失败';die;         }         if ((bool)$_GET['success'] === 'false') {             echo  '支付失败，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】';die;         }         $payment = Payment::get($paymentId, $this->PayPal);         $execute = new PaymentExecution();         $execute->setPayerId($PayerID);         try {             $payment->execute($execute, $this->PayPal);         } catch (Exception $e) {             echo ',支付失败，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】';die;         }         echo '支付成功，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】';die;     }

异步回调

回调地址配置在后台，地址必须为https开头，设置一般过一段时间才会生效（我是下午申请，第二天上午才生效的，如图：

你可以勾选很多事件发送通知，不过最重要的还是支付完成（Payment sale completed）以及退款（Payment sale refunded）

支付完成

public function notify(){         //获取回调结果         $json_data = $this->get_JsonData();         if(!empty($json_data)){              Log::debug("paypal notify info:\r\n".json_encode($json_data));         }else{             Log::debug("paypal notify fail:参加为空");         }           //自己打印$json_data的值看有那些是你业务上用到的           //比如我用到           $data['invoice'] = $json_data['resource']['invoice_number'];           $data['txn_id'] = $json_data['resource']['id'];           $data['total'] = $json_data['resource']['amount']['total'];           $data['status'] = isset($json_data['status'])?$json_data['status']:'';           $data['state'] = $json_data['resource']['state'];         try {                  //处理相关业务         } catch (\Exception $e) {             //记录错误日志             Log::error("paypal notify fail:".$e->getMessage());             return "fail";         }         return "success";     }     public function get_JsonData(){         $json = file_get_contents('php://input');         if ($json) {             $json = str_replace("'", '', $json);             $json = json_decode($json,true);         }         return $json;     }

处理退款

public function returnMoney()     {         try {             $txn_id = "xxxxxxx";  //异步加调中拿到的id             $amt = new Amount();             $amt->setCurrency('USD')                 ->setTotal('99');  // 退款的费用             $refund = new Refund();             $refund->setAmount($amt);             $sale = new Sale();             $sale->setId($txn_id);             $refundedSale = $sale->refund($refund, $this->PayPal);         } catch (\Exception $e) {             // PayPal无效退款             return json_decode(json_encode(['message' => $e->getMessage(), 'code' => $e->getCode(), 'state' => $e->getMessage()]));  // to object         }         // 退款完成         return $refundedSale;      }

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