如果axios请求失败，如何获取后端接口返回的状态码及错误信息

这两天在工作中遇到一个问题，一个请求返回400错误，我需要向用户展示后端返回的错误信息，但是用普通的catch方法只能获取到浏览器返回的400错误提示，不能获取到后端返回的，后经查阅得出下面方法：

axios.get('/user/12345')
  .catch(function (error) {
    if (error.response) {
      // The request was made and the server responded with a status code
      // that falls out of the range of 2xx
      console.log(error.response.data);
      console.log(error.response.status);
      console.log(error.response.headers);
    } else if (error.request) {
      // The request was made but no response was received
      // `error.request` is an instance of XMLHttpRequest in the browser and an instance of
      // http.ClientRequest in node.js
      console.log(error.request);
    } else {
      // Something happened in setting up the request that triggered an Error
      console.log('Error', error.message);
    }
    console.log(error.config);
  });

 

参考文档： https://segmentfault.com/q/1010000011190809/a-1020000011210688