https://developers.weixin.qq.com/miniprogram/dev/api/payment/wx.requestVirtualPayment.htmlhttps://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/virtual-payment.html

参数           

"signData": {

                "env": 0,

                "offerId": "1450524350",

                "buyQuantity": 1,

                "currencyType": "CNY",

                "productId": "vip_lb_1",

                "goodsPrice": 19800,

                "outTradeNo": "GK_17791762936312342",

                "attach": "pay"

            },

            "paySig": "88ba2441e6f42efa9cf9a141cff419c355f2f631163a7c0af99427869cc3f938",

            "signature": "845a0aecf8c84bb6b2df5f68015724a43aebf2e7fb7c9de15d8c24c14eb9517f"