export const routersData = [{
   path: '/pet',//访问路径
   name: 'Pet',//路由的名字，这个与i18n有关，需要唯一
   meta: {
    title: '宠物',//标题
    hideInMenu: false,//是否在左侧导航菜单隐藏
    icon: 'logo-freebsd-devil'//图标
   },
   component: 'components/main',//组件文件路径，不需要Import
   children: [{//嵌套路由
    path: 'cat',
    name: 'Cat',
    meta: {
     title: '猫咪',
     hideInMenu: false,
     icon: 'ios-cloudy-night'
    },
    component: 'view/pet/cat/Cat.vue'
   }, {
    path: 'dog',
    name: 'Dog',
    meta: {
     hideInMenu: false,
     title: '狗娃',
     icon: 'ios-color-filter'
    },
    component: 'view/pet/dog/Dog.vue'
   }, {
    path: 'pig',
    name: 'Pig',
    meta: {
     hideInMenu: false,
     title: '猪啊',
     icon: 'ios-contact'
    },
    component: 'view/pet/pig/Pig.vue',
    children: [
     {
      path: 'female',
      name: 'Female',
      meta: {
       hideInMenu: false,
       title: '母猪',
       icon: 'ios-contact'
      },
      component: 'view/pet/pig/Pig.vue',
     },
     {
      path: 'male',
      name: 'Male',
      meta: {
       hideInMenu: false,
       title: '公猪',
       icon: 'ios-contact'
      },
      component: 'view/pet/pig/Pig.vue',
     }
    ]
   }]}]

Mock.mock(/\/sys\/routers/, routersData)

 export const getRouterReq = (access) => {
   return axios.request({
    url: '/sys/routers',
    params: {
     access
    },
    method: 'get'
 })}

import {getRouterReq} from '@/api/routers'

state: {
  .....
  routers: [],//拿到的路由数据
  hasGetRouter: false//是否已经拿过路由数据
 },

 mutations：{
   ......
   //设置路由数据
  setRouters(state, routers) {
   state.routers = routers
  },
  //设置是否已经拿过路由
  setHasGetRouter(state, status) {
   state.hasGetRouter = status
  }......}

action:{
........
  getRouters({commit}) {
   return new Promise((resolve, reject) => {
    try {
     getRouterReq().then(res => {
      let routers = backendMenusToRouters(res.data)
      commit('setRouters', routers)
      commit('setHasGetRouter', true)
      resolve(routers)
     }).catch(err => {
      reject(err)
     })
    } catch (error) {
     reject(error)
    }
   })
  },
  ........
}

export const backendMenusToRouters = (menus) => {
 let routers = []
 forEach(menus, (menu) => {
  // 将后端数据转换成路由数据
  let route = backendMenuToRoute(menu)
  // 如果后端数据有下级，则递归处理下级
  if (menu.children && menu.children.length !== 0) {
   route.children = backendMenusToRouters(menu.children)
  }
  routers.push(route)
 })
 return routers
}

  const initRouters = (store) => {
 //这个人登录了已经
 if (store.state.user.hasGetInfo) {
  //路由加载过了
  if (store.state.app.hasGetRouter && store.state.app.routers && store.state.app.routers.length > 0) {
   console.log("已经加载过了路由")
  } else {
   //加载路由
   console.log("开始加载路由权限...")
   store.dispatch('getUserMenus').then(routers => {
    //此处routers已经是按照权限过滤后的路由了，没权限的，不加入路由，无法访问
    //路由重置一下把404放最后
    const newRouter = new Router({
     routes,
     mode: config.routerModel
    })
    router.matcher = newRouter.matcher;
    //把404加最后面，如果用router.push({name:'xxxx'})这种的话，404页面可能空白，用path:'/aa/bb'
    router.addRoutes(routers.concat([{
     path: '*',
     name: 'error_404',
     meta: {
      hideInMenu: true
     },
     component: () => import(/* webpackChunkName: "404" */'@/view/error-page/404.vue')
    }]))
   }).finally(() => {
   })
  }
 }}