//app.js

App({

  onLaunch: function () {

    wx.cloud.init({

      //初始化云开发环境

      env: 'wxypay' //微信云的环境ID

    })

  }

})

npm i tenpay

// 云开发实现支付

const cloud = require('wx-server-sdk')

cloud.init()

//1.引入支付的第三方一来

const tenpay = require('tenpay');

//2.支付配置

const config = {

  //appid:'小程序的appid',

  appid:'wxc49d41bf015a06da',

  mchid:'你的微信商户号',

  partnerKey:'微信支付安全密钥',

  notify_url:'支付后回调地址',

  spbill_create_ip:'127.0.0.1'

};

exports.main = async(event,context) => {

  const wxContext = cloud.getWXContext()

  let {

    orderid,

    money

  } = event;

  //3.初始化支付

  const api = tenpay.init(config);

  let result = await api.getPayParams({

    out_trade_no:orderid,

    body:'商品简单描述',

    total_fee:money,//订单金额

    opendi:wxContext.opendi//付款用户的openid

  });

  return result;

}

// pages/pay/pay.js

Page({

  //提交订单

  formSubmit: function(e) {

    let that = this;

    let formData = e.detail.value

    console.log('form发生了submit事件，携带数据为：', formData)

    wx.cloud.callFunction({

      name: "pay",

      data: {

        orderid: "" + formData.orderid,

        money: formData.money

      },

      success(res) {

        console.log("提交成功", res.result)

        that.pay(res.result)

      },

      fail(res) {

        console.log("提交失败", res)

      }

    })

  },

  //实现小程序支付

  pay(payData) {

    //官方标准的支付方法

    wx.requestPayment({

      timeStamp: payData.timeStamp,

      nonceStr: payData.nonceStr,

      package: payData.package, //统一下单接口返回的 prepay_id 格式如：prepay_id=***

      signType: 'MD5',

      paySign: payData.paySign, //签名

      success(res) {

        console.log("支付成功", res)

      },

      fail(res) {

        console.log("支付失败", res)

      },

      complete(res) {

        console.log("支付完成", res)

      }

    })

  }

})