appId: "xxxxxxxxxxxxx"
nonceStr: "3066332631"
package: "prepay_id=wx22xxxxxxx"
paySign: "841029CFA7394015525FAAC6EC179E15"
signType: "MD5"
timeStamp: "1574416051"
paySign错误让后端检查签名生成格式
这里一定要有appid吗?为什么文档里没有?https://developers.weixin.qq.com/miniprogram/dev/api/open-api/payment/wx.requestPayment.html