text: // 云函数入口文件
  const cloud = require('wx-server-sdk')
  
  cloud.init()
  
  // 云函数入口函数
  exports.main = async (event, context) => {
      const wxContext = cloud.getWXContext()
  
      return {
          backgroundUrl: 'https://6d79-my-test-5877bc-1257953462.tcb.qcloud.la/assets/2021-new-year.001.png?sign=8b7fe05c2203e38a4c88c6e1ef86b59a&t=1609078739',
          // backgroundUrl: '',
          mainColor: '',
          subColor: ''
      }
  }