How to use Hyperf framework for WeChat payment

Use Hyperf framework for WeChat payment

Introduction:
With the development of e-commerce, WeChat payment has become one of the main ways for people to shop and pay in daily life. . In development, how to quickly integrate WeChat payment becomes particularly important. This article will introduce how to use the Hyperf framework for WeChat payment and provide specific code examples.

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1. Preparation work
Before using the Hyperf framework for WeChat payment, some preparation work is required. First, register a WeChat payment account and obtain merchant number, application key and other information. Secondly, install the Hyperf framework. You can use Composer to install it and execute the command: composer create-project hyperf/hyperf-skeleton. Finally, install the WeChat payment SDK library. You can use Composer to install it and execute the command: composer require overtrue/wechat.

2. Configuration file
In the Hyperf framework, the configuration file is located in the config/autoload directory. In the configuration file, fill in the WeChat payment-related configuration items correctly, including merchant number, application key, etc. The sample configuration is as follows:

return [
    'wechat' => [
        'app_id' => env('WECHAT_APPID', ''),
        'mch_id' => env('WECHAT_MCH_ID', ''),
        'key' => env('WECHAT_KEY', ''),
        'cert_path' => env('WECHAT_CERT_PATH',''),
        'key_path' => env('WECHAT_KEY_PATH',''),
        'notify_url' => env('WECHAT_NOTIFY_URL',''),
    ],
];

3. Create a WeChat payment service class
In the Hyperf framework, you can create a WeChat payment service class to encapsulate payment-related methods. The sample code is as follows:

<?php

declare(strict_types=1);

namespace AppService;

use EasyWeChatPaymentApplication;

class WechatPayService
{
    protected $app;

    public function __construct()
    {
        $config = config('wechat');
        $this->app = new Application($config);
    }

    public function createOrder(string $orderNo, float $totalAmount, string $description)
    {
        $result = $this->app->order->unify([
            'out_trade_no' => $orderNo,
            'body' => $description,
            'total_fee' => $totalAmount * 100,
            'trade_type' => 'APP',
        ]);

        if ($result['return_code'] === 'SUCCESS' && $result['result_code'] === 'SUCCESS') {
            $prepayId = $result['prepay_id'];
            $jssdkParams = $this->app->jssdk->appConfig($prepayId);

            return [
                'prepay_id' => $result['prepay_id'],
                'jssdk_params' => $jssdkParams,
            ];
        } else {
            throw new Exception($result['return_msg']);
        }
    }

    public function notify(array $data)
    {
        $response = $this->app->handlePaidNotify(function ($message, $fail) {
            // 处理支付回调
            // 更新订单状态，发货等操作
            return true; // 返回处理结果， true 或 false
        });

        return $response;
    }
}

4. Call the payment interface
Wherever WeChat payment needs to be called, instantiate the WeChat payment service class and call the corresponding method. The sample code is as follows:

<?php

declare(strict_types=1);

namespace AppController;

use AppServiceWechatPayService;
use HyperfHttpServerAnnotationController;
use HyperfHttpServerAnnotationPostMapping;
use HyperfHttpServerContractRequestInterface;

/**
 * @Controller()
 */
class PayController
{
    /**
     * @PostMapping(path="/pay")
     */
    public function pay(RequestInterface $request, WechatPayService $payService)
    {
        $orderNo = $request->input('orderNo');
        $totalAmount = $request->input('totalAmount');
        $description = $request->input('description');

        try {
            $result = $payService->createOrder($orderNo, $totalAmount, $description);
            // 返回给前端APP的支付参数
            return $result;
        } catch (Exception $e) {
            // 处理异常错误
            return [
                'error' => $e->getMessage(),
            ];
        }
    }

    /**
     * @PostMapping(path="/notify")
     */
    public function notify(RequestInterface $request, WechatPayService $payService)
    {
        $payService->notify($request->all());
        // 处理支付回调结果

        return 'success';
    }
}

5. Configure routing
Configure routing and bind the payment interface and callback interface to the corresponding controller method. The sample code is as follows:

<?php

declare(strict_types=1);

use HyperfHttpServerRouterRouter;

Router::addRoute(['POST'], '/pay', 'App\Controller\PayController@pay');
Router::addRoute(['POST'], '/notify', 'App\Controller\PayController@notify');

Summary:
This article introduces how to use the Hyperf framework for WeChat payment and provides specific code examples. By setting WeChat payment related parameters through the configuration file and creating a WeChat payment service class, you can easily call the payment interface and call back the payment results. I hope this article will be helpful to developers who integrate WeChat Pay during the development process.

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