text: import Vue from 'vue';
  import App from './App.vue';
  import router from './router';
  import ElementUI from 'element-ui';
  import VueI18n from 'vue-i18n';
  import { messages } from './components/common/i18n';
  import 'element-ui/lib/theme-chalk/index.css'; // 默认主题
  // import './assets/css/theme-green/index.css'; // 浅绿色主题
  import './assets/css/icon.css';
  import './components/common/directives';
  import 'babel-polyfill';
  import axios from 'axios';
  
  // 挂载到vue原型链上
  Vue.prototype.axios = axios;
  
  Vue.config.productionTip = false;
  Vue.use(VueI18n);
  Vue.use(ElementUI, {
      size: 'small'
  });
  const i18n = new VueI18n({
      locale: 'zh',
      messages
  });
  
  //使用钩子函数对路由进行权限跳转
  router.beforeEach((to, from, next) => {
      document.title = `${to.meta.title} | 家教管理系统`;
      const token = localStorage.getItem('token');
      // token不存在表示还未登录
      if (!token && to.path !== '/login') {
          next('/login');
      } else {
          next();
      }
  });
  
  new Vue({
      router,
      i18n,
      render: h => h(App)
  }).$mount('#app');
  