微信小程序支付

通过 统一支付API 下单，trade_type=WXMAB2B

下单

payment=WXPAY，trade_type=JSAPI，is_wxapp=Y，sence_info

示例：

{
  "payment": "WXPAY",
  "trade_type": "JSAPI",
  "fee": 100,
  "out_trade_no": "202203251800001",
  "body": "云商品",
  "client_ip": "61.144.11.222",
  "notify_url": "http://p.abc.com/callback/202203251800001/",
  "app_id": "wxf636efh567hg4356",
  "open_id": "o-MYE42l80oelYMDE34nYD456Xoy",
  "origin_fee": 120,
  "shop_id": "s1000120001",
  "is_wxapp": "Y"
}

下单成功返回的pay_info

名称	类型	说明
app_id	String	发起微信支付的AppId
timestamp	String	时间戳
nonce_str	String	随机字符串
package	String	"prepay_id=xxxx"
sign_type	String	签名类型
pay_sign	String	支付签名

调起微信支付

pay_info返回值直接透传到前端小程序

wx.requestPayment({
    timeStamp: '',
    nonceStr: '',
    package: '',
    signType: 'MD5',
    paySign: '',
    success(res) {
        //do something
    },
    fail(res) {
        //do something
    }
})