vue的路由拦截器

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1.index.js文件

PS：route，是一条路由；routes 是一组路由；router 是一个机制，相当于一个管理者，它来管理路由

import Vue from 'vue';
import Router from 'vue-router';

// 要告诉 vue 使用 Router
Vue.use(Router)

// route是一个对象，多个route组成一个routes
const routes = [
    {
        path: '/', component: login, name: 'login'
    },
    {
        path: '/action', component: action, name: 'action',
        children: [
            {path: '/', component: index, name: 'index'},
            {path: 'index', component: index, name: 'index'},
            {path: 'index_add', component: index_add, name: 'index_add'},
            {path: 'index_alter/:id', component: index_alter, name: 'index_alter'},
            {path: 'product', component: product, name: 'product'},
            {path: 'product_add', component: product_add, name: 'product_add'},
            {path: 'product_alter/:id', component: product_alter, name: 'product_alter'},
            {path: 'news', component: news, name: 'news'},
            {path: 'news_add', component: news_add, name: 'news_add'},
            {path: 'news_alter/:id', component: news_alter, name: 'news_alter'},
            {path: 'aboutUs', component: aboutUs, name: 'aboutUs'},
            {path: 'aboutUs_alter', component: aboutUs_alter, name: 'aboutUs_alter'}
        ]
    }
  ]

// 创建router对路由进行管理，由构造函数 new Router()创建，接收routes参数
const router = new Router({
    routes: routes // 简写：routes
});

2. 路由拦截器

PS：判断是否有token值或是否to登录页，是则next()，否则跳转到登录页

export default router