import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/common/Login';
......

Vue.use(Router)
const router = new Router({
 routes: [{
   path: '/',
   name: Login,
   component: Login,
  },
  {
   path: '/home',
   component: Home,
   meta: {                  
    requiresAuth: true   // 要求验证的页面,在此情况下其子页面也会被验证.
   },
   children: [{
     path: '/paChong',
     name: 'PaChong',
     component: PaChong
    }
   ]
  }
 ]
})
router.beforeEach((to, from, next) => {
 if (to.matched.some(record => record.meta.requiresAuth)) {   // 哪些需要验证
  if (!sessionStorage.getItem("token")) {           // token存在条件  
   next({
    path: '/',                        // 验证失败要跳转的页面
    query: {
      redirect: to.fullPath                 // 要传的参数
     }
   })
  } else {
   next()
  }
 } else {
  next()                            // 确保一定要调用 next()
 }
})

export default router