收款，一个码就够了

// 创建一笔聚合支付订单
const mapay = require('mapay-sdk')('mch_100001', process.env.MAPAY_KEY)

const order = await mapay.trade.create({
  out_trade_no: 'ORDER_20261109_001',
  amount: 9900,            // 单位：分
  channel: 'wechat',
  notify_url: 'https://shop.example.com/notify'
})

console.log(order.code_url)  // 交给前端生成二维码

// 创建一笔聚合支付订单
$client = new Mapay\Client('mch_100001', getenv('MAPAY_KEY'));

$order = $client->trade->create([
  'out_trade_no' => 'ORDER_20261109_001',
  'amount'       => 9900,        // 单位：分
  'channel'      => 'wechat',
  'notify_url'   => 'https://shop.example.com/notify',
]);

echo $order['code_url'];

// 创建一笔聚合支付订单
MapayClient client = new MapayClient("mch_100001", System.getenv("MAPAY_KEY"));

CreateOrderRequest req = CreateOrderRequest.builder()
    .outTradeNo("ORDER_20261109_001")
    .amount(9900)
    .channel("wechat")
    .notifyUrl("https://shop.example.com/notify")
    .build();

CreateOrderResponse res = client.trade().create(req);
System.out.println(res.getCodeUrl());