router.get('/getPosition', async (ctx) => {
  const ip = await (await axios.get('https://api.myip.com')).data.ip
  const key = '你自己在高德上申请的key'
  let res = await axios.get(`https://restapi.amap.com/v5/ip?key=${key}&type=4&ip=${ip}`)

  console.log(res.data);
  
  ctx.body = {
    code: 0,
    province:res.data.province
  }

})