const cloud = require(‘wx-server-sdk’)
const rp = require(‘request-promise’);
cloud.init()
async function getAccessToken(){
console.log(‘getAccessToken’)
const S_TO_MS = 1000; // 秒到毫秒的转换。
if (!global.access_token || !global.access_token.timestamp ||
!global.access_token.expires_in ||
global.access_token.timestamp + global.access_token.expires_in * S_TO_MS <= new Date() - 300) {
console.log(‘getAccessToken 缓存无效’)
//appid 和秘钥
const appid = ‘你的appid’, secret = ‘你的secret’
const AccessToken_options = {
method: ‘GET’,
url: ‘https://api.weixin.qq.com/cgi-bin/token’,
qs: {
appid,
secret,
grant_type: ‘client_credential’
},
json: true
};
//获取AccessToken
const resultValue = await rp(AccessToken_options);

    const token = resultValue.access_token
    global.access_token = {
      access_token: token,
      timestamp: new Date(),
      expires_in: resultValue.expires_in
    }

    return resultValue.access_token
}else{
    const access_token = global.access_token.access_token;
    console.log('缓存缓存缓存', access_token)
    return access_token
}

}

// 云函数入口函数
exports.main = async (event, context) => {
const token = await getAccessToken()
console.log(token)
return token
};