neiyou_user_web/app/Http/Controllers/Gateway/PayJs.php

<?php

namespace App\Http\Controllers\Gateway;

use App\Models\Payment;
use Auth;
use Illuminate\Http\JsonResponse;
use Response;
use Xhat\Payjs\Payjs as Pay;

class PayJs extends AbstractPayment
{

    private static $config;

    public function __construct()
    {
        self::$config = [
            'mchid' => sysConfig('payjs_mch_id'),   // 配置商户号
            'key'   => sysConfig('payjs_key'),   // 配置通信密钥
        ];
    }

    public function purchase($request): JsonResponse
    {
        $payment = $this->creatNewPayment(
            Auth::id(),
            $request->input('id'),
            $request->input('amount')
        );

        $result = (new Pay($this::$config))->cashier(
            [
                'body'         => sysConfig('subject_name') ?: sysConfig(
                    'website_name'
                ),
                'total_fee'    => $payment->amount * 100,
                'out_trade_no' => $payment->trade_no,
                'notify_url'   => (sysConfig(
                        'website_callback_url'
                    ) ?: sysConfig(
                        'website_url'
                    )) . '/callback/notify?method=payjs',
            ]
        );

        // 获取收款二维码内容
        $payment->update(['qr_code' => 1, 'url' => $result]);

        //$this->addPamentCallback($payment->trade_no, null, $payment->amount * 100);
        return Response::json(
            [
                'status'  => 'success',
                'data'    => $payment->trade_no,
                'message' => '创建订单成功!',
            ]
        );
    }

    public function notify($request): void
    {
        $data = (new Pay($this::$config))->notify();

        if ($data['return_code'] == 1) {
            $payment = Payment::whereTradeNo($data['out_trade_no'])->first();
            if ($payment) {
                $ret = $payment->order->update(['status' => 2]);
                if ($ret) {
                    exit('success');
                }
            }
        }
        exit('fail');
    }

}