记录一下接入paypal 全过程

因项目的原因要用到国外的支付和国外的信用卡，查了一下paypal就内置了信用卡付款方式，所以只需要接入paypal就能基本满足项目海外支付的需求。

查了一下文档发现web端可以接入js的支付和服务端sdk的支付，这里选择了php-sdk支付

一. 下载sdk

在composer.json中加入 "paypal/rest-api-sdk-php" : "1.7.4"

在命令行中运行 composer update

二. 注册开发者帐号、创建应用

1. 创建应用

2. 获取应用配置

shndbox为沙盒环境配置，live反之

3. 创建测试帐号

点击create account设置测试帐号金额和密码

三.代码

调起paypal支付

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';//ID

const clientSecret = 'xxxxxxxx';//秘钥

const accept_url = 'http://laravel-rbac.cc/Api/paypal/Callback';//返回地址

const Currency = 'USD';//币种

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}");

}

同步回调 - 用于确认用户是否付款

/**

* 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 - 用于处理业务逻辑

要先在控制面板设置回调地址，必须为Https,设置后要等一会才会生效

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;

}

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;

}

查看相关流水

支付成为后到测试帐号里查看流水https://www.sandbox.paypal.com/myaccount/home

结语

Paypal 由于是英文文档查了很多博客结合着文档来做的，下面是

php-sdk文档的地址：

http://paypal.github.io/PayPal-PHP-SDK/

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