axios CROS每次请求多一次options请求
case: https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Access_control_CORS
header’s param except for the following

  • Accept
  • Accept-Language
  • Content-Language
  • Content-Type （需要注意额外的限制）
  • DPR
  • Downlink
  • Save-Data
  • Viewport-Width
  • Width
    other param make the request become complex requests
config.headers['X-Token'] = getToken()

here the reason is ‘X-Token’