目录结构

router.js

import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Right from './components/power/Right.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import List from './components/goods/List.vue'
Vue.use(Router)
 
const router = new Router({
  routes: [{
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [{
          path: '/welcome',
          component: Welcome
        }, {
          path: '/users',
          component: Users
        },
        {
          path: '/rights',
          component: Right
        },
        {
          path: '/roles',
          component: Roles
        },
        {
          path: '/categories',
          component: Cate
        }, {
          path: '/params',
          component: Params
        }, {
          path: '/goods',
          component: List
        }
      ]
    }
  ]
});
//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  if (to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next();
})
 
export default router

login.vue