axios 跨域请求接口携带不了cookie

Question

axios 跨域请求接口携带不了cookie. main.js里已经有了如下配置

import axios from 'axios'
import VueAxios from 'vue-axios'
Vue.use(VueAxios, axios)
axios.defaults.withCredentials = true
Vue.prototype.$axios = axios;

后端也加了

res.header('Access-Control-Allow-Credentials', 'true');

但是请求接口后，提示会话Id为空,请检查浏览器是否允许Cookie功能

Answer 1

现在已经正常了，加上下面一句话

HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "http://localhost:8081"); 
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Credentials", "true"); 

Answer 2

cookie是不允许跨域访问的；如果是同一个主域的话，到是可以设置cookie到主域下，然后多个二级域名共用cookie