Vue技术开发中如何处理用户权限的动态管理和切换

const routes = [  {    path: '/',    component: Home,    meta: { requiresAuth: true, roles: ['admin', 'user'] }  },  {    path: '/admin',    component: Admin,    meta: { requiresAuth: true, roles: ['admin'] }  },  {    path: '/user',    component: User,    meta: { requiresAuth: true, roles: ['user'] }  },  {    path: '/login',    component: Login  },  {    path: '*',    component: NotFound  }];

const router = new VueRouter({  mode: 'history',  routes});router.beforeEach((to, from, next) => {  const requiresAuth = to.matched.some(record => record.meta.requiresAuth);  const roles = to.meta.roles;  if (requiresAuth && !isAuthenticated) { // 检查用户是否已登录    next('/login');  } else if (requiresAuth && roles && !hasRoles(roles)) { // 检查用户是否具备访问该路由的角色    next('/'); // 或者跳转到无权限页面  } else {    next();  }});

const getCurrentUserRoles = () => {  // 通过API获取用户的角色  // 返回一个Promise对象  return new Promise((resolve, reject) => {    // 调用API    resolve(['admin', 'user']); // 假设当前用户拥有admin和user角色  });};

const switchRoles = () => {  getCurrentUserRoles().then(roles => {    const newRoutes = generateRoutes(roles); // 根据用户角色生成新的路由    router.addRoutes(newRoutes); // 添加新的路由  });};

<template>  <div>    <router-link to="/">Home</router-link> |    <router-link to="/admin">Admin</router-link> |    <router-link to="/user">User</router-link> |    <button @click="switchRoles">Switch Roles</button>    <router-view></router-view>  </div></template><script>import VueRouter from 'vue-router';const Home = { template: '<div>Home</div>' };const Admin = { template: '<div>Admin</div>' };const User = { template: '<div>User</div>' };const Login = { template: '<div>Login</div>' };const NotFound = { template: '<div>Not Found</div>' };const routes = [  {    path: '/',    component: Home,    meta: { requiresAuth: true, roles: ['admin', 'user'] }  },  {    path: '/admin',    component: Admin,    meta: { requiresAuth: true, roles: ['admin'] }  },  {    path: '/user',    component: User,    meta: { requiresAuth: true, roles: ['user'] }  },  {    path: '/login',    component: Login  },  {    path: '*',    component: NotFound  }];const router = new VueRouter({  mode: 'history',  routes});const isAuthenticated = true;const hasRoles = (roles) => {  return roles.some(role => role === 'admin');};const getCurrentUserRoles = () => {  return new Promise((resolve, reject) => {    setTimeout(() => {      resolve(['user']);    }, 1000);  });};const generateRoutes = (roles) => {  return routes.filter(route => {    return !route.meta.roles || route.meta.roles.some(role => roles.includes(role));  });};const switchRoles = () => {  getCurrentUserRoles().then(roles => {    const newRoutes = generateRoutes(roles);    router.addRoutes(newRoutes);  });};export default {  data() {    return {      isAuthenticated    };  },  methods: {    switchRoles  },  router};</script>