router.addRoute({ path: '/user/list', component: UserList })

// router/routes.js
const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index.vue'),
    hidden: true
  },
  {
    path: '/',
    component: () => import('@/layout/Layout.vue'),
    redirect: '/dashboard',
    children: []
  },
  {
    path: '/:pathMatch(.*)*',
    component: () => import('@/views/error-page/404.vue'),
    hidden: true
  }
];

export default constantRoutes;

// store/modules/permission.js

const state = {
  routes: [],           // 所有可訪問(wèn)路由
  addRoutes: [],        // 動(dòng)態(tài)添加的路由
  hasGenerated: false   // 關(guān)鍵：是否已生成路由
};

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes;
    state.routes = constantRoutes.concat(routes);
    state.hasGenerated = true;
  },
  RESET_ROUTES: (state) => {
    state.routes = [];
    state.addRoutes = [];
    state.hasGenerated = false;
  }
};

const actions = {
  generateRoutes({ commit }, menus) {
    return new Promise(resolve => {
      const accessedRoutes = filterAsyncRoutes(asyncRoutes, menus);
      commit('SET_ROUTES', accessedRoutes);
      resolve(accessedRoutes);
    });
  }
};

// router/index.js
import router from './index';
import store from '@/store';
import { getToken } from '@/utils/auth';

const whiteList = ['/login'];

router.beforeEach(async (to, from, next) => {
  const hasToken = getToken();
  const hasGenerated = store.state.permission.hasGenerated;

  if (hasToken) {
    if (to.path === '/login') {
      next({ path: '/' });
    } else {
      if (hasGenerated) {
        next(); // 路由已生成，放行
      } else {
        try {
          await store.dispatch('user/getUserInfo');
          const menus = store.getters['user/menus'];
          const accessedRoutes = await store.dispatch('permission/generateRoutes', menus);

          // 逐個(gè)添加動(dòng)態(tài)路由
          accessedRoutes.forEach(route => {
            router.addRoute(route);
          });

          // 使用 replace 重新導(dǎo)航，確保路由生效
          next({ ...to, replace: true });
        } catch (error) {
          await store.dispatch('user/logout');
          next(`/login?redirect=${to.path}`);
        }
      }
    }
  } else {
    if (whiteList.includes(to.path)) {
      next();
    } else {
      next(`/login?redirect=${to.path}`);
    }
  }
});

// user module
const userInfo = localStorage.getItem('userInfo');
if (userInfo) {
  state.userInfo = JSON.parse(userInfo);
} else {
  const res = await getUserInfo();
  localStorage.setItem('userInfo', JSON.stringify(res));
}

// permission module
commit('SET_GENERATING', true);
// ...生成路由
commit('SET_GENERATING', false);

<loading v-if="$store.state.permission.isGenerating" />

resetRouter() {
  this.addRoutes.forEach(route => {
    router.removeRoute(route.name);
  });
  this.commit('permission/RESET_ROUTES');
}