wx.requestMidasPayment 传递的参数:{"mode":"game","env":1,"offerId":"1450028442","currencyType":"CNY","zoneId":"1","platform":"android","buyQuantity":10} appid:wxd43c5a56a0d7f3bc 返回值:{"errMsg":"requestMidasPayment:fail  下单异常,请检查商品参数","errCode":8}