WXTrackGame/cloudfunctions/quickstartFunctions/getOpenId/index.js

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

cloud.init({
  env: cloud.DYNAMIC_CURRENT_ENV
});

// 获取openId云函数入口函数
exports.main = async (event, context) => {
  // 获取基础信息
  const wxContext = cloud.getWXContext();

  return {
    openid: wxContext.OPENID,
    appid: wxContext.APPID,
    unionid: wxContext.UNIONID,
  };
};