后端使用axios的post请求music云函数，返回的是字符串，怎么转换成数组

Question

const Router = require(‘koa-router’)
const router = new Router()
const axios = require(‘axios’)
const getAccessToken = require(’…/utils/getAccessToken.js’)

router.get(’/list’, async (ctx, next) => {
//查询歌单列表
const ACCESS_TOKEN = await getAccessToken()
const ENV = 'test-6golf8e0c24e8273’
const url = https://api.weixin.qq.com/tcb/invokecloudfunction?access_token=${ACCESS_TOKEN}&env=${ENV}&name=music
const data = await axios({
url,
method: ‘post’,
data: {
$url: ‘playlist’,
start: 0,
count: 50
}
}).then((res) => {
console.log(res.data)
return res.data
}).catch((error) => {
console.log(error)
})
ctx.body = {
data,
code:20000
}

})

module.exports = router

Answer 1

谢成 2021-09-27 09:14:39

JSON.parse()方法可以把字符串转化为对象，然后就可以去掉对象下面的属性了。

• 提问者 京2747767 #1

  昨天发错了，res是对象，但是用res.data取不到歌单。云函数在小程序端调用能拿到数组，这里typeof显示是对象，拿到的却是字符串

• 提问者 京2747767 #2

  return res.data 能取到字符串歌单
  return res，报错，提示这个信息
  
  服务开启在3000端口
  object
  
    TypeError: Converting circular structure to JSON
        --> starting at object with constructor 'ClientReques
        |     property 'socket' -> object with constructor 'T
        --- property '_httpMessage' closes the circle
        at JSON.stringify (<anonymous>)
        at respond (C:\Users\Administrator\Desktop\music-amin
        at handleResponse (C:\Users\Administrator\Desktop\mus
        at processTicksAndRejections (internal/process/task_q