Implementation of single sign-on function in vue

  1. Business requirements are as follows: when accessing the domain name / project, a request will be sent to the backend to determine whether it is logged in, jump directly if it is logged in, and jump to the login page if it is not logged in;
    2. The problem encountered by
  2. : axios automatically redirects 302 when sending query login request, resulting in not getting JSON data; using axios.defaults.headers.common ["XmurRequestedlyWith"] =" XMLHttpRequest"; seems to solve the problem, but redirecting after login does not jump to the home page, as if the TOKEN returned by login is not brought with it.
  3. excuse me, how should axios? be encapsulated? Bring TOKEN to every request in the future. Where should the request for login judgment be made? I am currently sending it in APP.vue.
  4. Thank you.
Vue.js
Nov.03,2021

you can store token in one place and encapsulate axios
including request parameters
here is a simple encapsulation example
due to different request methods, request parameters will appear in both data and params. Please note 

import axios from 'axios';
import Cookie from '../util/cookie'
// 
axios.defaults.timeout = 5000;
// 
axios.defaults.baseURL ='';
//http request 
axios.interceptors.request.use(
  config => {
    // token
    const token = Cookie.get('cc_token');
    // 
    config.headers = {
      'Content-Type':'application/json',
    };
    // tokenheaders
    if(token){
      config.headers.token = token
    }
    //
    if(config.method === 'get' && config.url !== '/api/admin/login'){
      config.params = config.params || {}
    }else if(config.url !== '/api/admin/login'){
      config.data = config.data || {};
    }
    return config;
  },
  err => {
    return Promise.reject(err);
  }
);


//http response 
axios.interceptors.response.use(
  response => {
    if(response.data.code === 501){
      // 
      router.push({
        name:'login'//
      })
    }
    return response;
  },
  error => {
    return Promise.reject(error)
  }
);


/**
 * get
 * @param url
 * @param params
 * @returns {Promise}
 */

export function fetch(url,params={}){
  return new Promise((resolve,reject) => {
    axios.get(url,{
      params:params
    }).then(response => {
        if(response.data.code === 200){
            //
          resolve(response.data.data);
        }else{
          Message.error(response.data.msg)
        }
      })
      .catch(err => {
        reject(err);
        let message = '';
        if(err.response)message=err.response.data.message;
        MessageBox({
          title:'',
          message:message,
          type:'error',
        })
      })
  })
}

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