复杂的路由权限设置: 比如OA系统、多种角色的权限配置。通常需要后端返回路由列表,前端渲染使用
1)配置项目路由文件,该文件中没有路由,或者存在一部分公共路由,即没有权限的路由

import Vue from 'vue'
import Router from 'vue-router'
import Layout from '@/layout';
Vue.use(Router)
// 配置项目中没有涉及权限的公共路由
export const constantRoutes = [
    {
        path: '/login',
        component: () => import('@/views/login'),
        hidden: true
    },
    {
        path: '/404',
        component: () => import('@/views/404'),
        hidden: true
    },
]

const createRouter = () => new Router({
    mode: 'history',
    scrollBehavior: () => ({ y: 0 }),
    routes: constantRoutes
})
const router = createRouter()

export function resetRouter() {
    const newRouter = createRouter()
    router.matcher = newRouter.matcher
}

export default router

2)新建一个公共的asyncRouter.js文件

// 引入路由文件这种的公共路由
import { constantRoutes } from '../router';
// Layout 组件是项目中的主页面,切换路由时,仅切换Layout中的组件
import Layout from '@/layout';
export function getAsyncRoutes(routes) {
    const res = []
    // 定义路由中需要的自定名
    const keys = ['path', 'name', 'children', 'redirect', 'meta', 'hidden','alwaysShow']
    // 遍历路由数组去重组可用的路由
    routes.forEach(item => {
        const newItem = {};
        if (item.component) {
            // 判断 item.component 是否等于 'Layout',若是则直接替换成引入的 Layout 组件
            if (item.component === 'Layout') {
                newItem.component = Layout
            } else {
            //  item.component 不等于 'Layout',则说明它是组件路径地址,因此直接替换成路由引入的方法
                newItem.component = resolve => require([`@/views/${item.component}`],resolve)
                
                // 此处用reqiure比较好,import引入变量会有各种莫名的错误
                // newItem.component = (() => import(`@/views/${item.component}`));
            }
        }
        for (const key in item) {
            if (keys.includes(key)) {
                newItem[key] = item[key]
            }
        }
        // 若遍历的当前路由存在子路由,需要对子路由进行递归遍历
        if (newItem.children && newItem.children.length) {
            newItem.children = getAsyncRoutes(item.children)
        }
        res.push(newItem)
    })
    // 返回处理好且可用的路由数组
    return res
}

3)创建路由守卫:创建公共的permission.js文件,设置路由守卫

//  进度条引入设置如上面第一种描述一样
import router from './router'
import store from './store'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import { getAsyncRoutes } from '@/utils/asyncRouter'

const whiteList = ['/login'];
router.beforeEach( async (to, from, next) => {
    NProgress.start()
    document.title = to.meta.title;
    // 获取用户token,用来判断当前用户是否登录
    const hasToken = getToken()
    if (hasToken) {
        if (to.path === '/login') {
            next({ path: '/' })
            NProgress.done()
        } else {
            //异步获取store中的路由
            let route = await store.state.addRoutes;
            const hasRouters = route && route.length>0;
            //判断store中是否有路由,若有,进行下一步
            if ( hasRouters ) {
                next()
            } else {
                //store中没有路由,则需要获取获取异步路由,并进行格式化处理
                try {
                    const accessRoutes = getAsyncRoutes(await store.state.addRoutes );
                    // 动态添加格式化过的路由
                    router.addRoutes(accessRoutes);
                    next({ ...to, replace: true })
                } catch (error) {
                    // Message.error('出错了')
                    next(`/login?redirect=${to.path}`)
                    NProgress.done()
                }
            }
        }
    } else {
        if (whiteList.indexOf(to.path) !== -1) {
            next()
        } else {
            next(`/login?redirect=${to.path}`)
            NProgress.done()
        }
    }
})

router.afterEach(() => {
    NProgress.done()
})

4)在main.js中引入permission.js文件
5)在login登录的时候将路由信息存储到store中

//  登录接口调用后,调用路由接口,后端返回相应用户的路由res.router,我们需要存储到store中,方便其他地方拿取
this.$store.dispatch("addRoutes", res.router);

到这里,整个动态路由就可以走通了,但是页面跳转、路由守卫处理是异步的,会存在动态路由添加后跳转的是空白页面,这是因为路由在执行next()时,router里面的数据还不存在,此时,你可以通过window.location.reload()来刷新路由
6).后端返回的路由格式:

"responseData": [{
		"path": "/org",
		"component": "org",
		"redirect": "noRedirect",
		"alwaysShow": true,
		"name": "org",
		"meta": {
			"title": "组织架构中心",
			"icon": "icon"
		},
		"children": [{
			"path": "/person",
			"component": "personnel",
			"redirect": "noRedirect",
			"alwaysShow": true,
			"name": "personnel",
			"meta": {
				"title": "人事管理",
				"icon": ""
			},
			"children": [{
				"path": "/manage",
				"component": "recruitManagement/recruitManagement",
				"redirect": "noRedirect",
				"name": "personnel_recruit_list",
				"meta": {
					"title": "招聘管理",
					"icon": ""
				}
			}, {
				"path": "/order",
				"component": "dispatchrequirement/dispatchRequirementList",
				"redirect": "noRedirect",
				"name": "dispatch_requirement_list",
				"meta": {
					"title": "派单需求",
					"icon": ""
				}
			}]
		}]
	}],
	```
![在这里插入图片描述](https://img-blog.csdnimg.cn/a3fb528e9c014e5489f892e189441746.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5q-b5bCW5ZOl,size_13,color_FFFFFF,t_70,g_se,x_16)