循序渐进VUE+Element 前端应用开发(3）--- 动态菜单和路由的关联处理

[
  {
    id: '1',
    pid: '-1',
    text: '首页',
    icon: 'dashboard',
    name: 'dashboard'
  },
  {
    id: '2',
    pid: '-1',
    text: '产品列表',
    icon: 'table',
    name: 'product'
  },
  {
    id: '3',
    pid: '-1',
    text: '一级菜单',
    icon: 'example',
    children: [
      {
        id: '3-1',
        pid: '3',
        text: '二级菜单1',
        name: 'icon',
        icon: 'example'
      },
      {
        id: '3-2',
        pid: '3',
        text: '二级菜单2',
        icon: 'tree',
        children: [
          {
            id: '3-2-1',
            pid: '3-2',
            text: '三级菜单1',
            name: 'form',
            icon: 'form'
          },
          {
            id: '3-2-2',
            pid: '3-2',
            text: '三级菜单2',
            name: 'menu1-1',
            icon: 'form'
          },
          {
            id: '3-2-3',
            pid: '3-2',
            text: '三级菜单3',
            name: 'menu1-2',
            icon: 'form'
          },
          {
            id: '3-2-4',
            pid: '3-2',
            text: '三级菜单4',
            name: 'menu1-3',
            icon: 'form'
          }
        ]
      }
    ]
  },
  {
    id: '99',
    pid: '-1',
    text: '公司官网',
    icon: 'table',
    name: 'external-link'
  }
]

可以在一个JS文件里面定义好对应前端所有的路由信息，如下所示
// 定义本系统的所有路由，具体路由呈现经过菜单数据过滤
export const asyncRoutes = {
  'dashboard': {
    path: '/dashboard',
    component: Layout,
    children: [{
      path: 'dashboard',
      name: 'dashboard',
      component: () => import('@/views/dashboard/index')
    }]
  },
  'product': {
    path: '/product',
    component: Layout,
    children: [{
      path: '/product',
      name: 'product',
      component: () => import('@/views/Product/index')
    }]
  },
  .............................. //省略部分
  'icon': {
    path: '/icon',
    component: Layout,
    children: [{
      path: '/icon',
      name: 'icon',
      component: () => import('@/views/icons/index')
    }]
  },
  'external-link': {
    path: 'http://www.iqidi.com',
    name: 'external-link'
  }
}

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})
const router = createRouter()
// 重置路由
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

router.beforeEach(async(to, from, next) => {

const state = {
  menuItems: [],
  routes: [],
  addRoutes: [],
  asyncRoutes: asyncRoutes
}

// 定义了路由和菜单的Mutation
const mutations = {
  SET_ROUTES: (state, routes) => {
    // var list = convertRoute(routes)
    routes.push({ path: '*', redirect: '/404', hidden: true }) // 此为默认错误路由
    state.addRoutes = routes
    state.routes = [].concat(routes)// constantRoutes.concat(routes)
  },
  SET_MENUS: (state, menus) => {
    state.menuItems = menus
  }
}

// 定义了生成动态路由的Action处理
const actions = {
  generateRoutes({ commit }, roles) {
    return new Promise(resolve => {
      getMenus().then(res => {
        const menus = res.data || [] // 统一通过接口获取菜单信息
        const routes = []
        menus.forEach(item => {
          filterRoutes(routes, item)
        })
        console.log(routes)// 打印路由
        commit('SET_ROUTES', routes)
        commit('SET_MENUS', menus)
        resolve(routes)
      });
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}