详解vue各种权限控制与管理的实现思路

import Vue from 'vue'
import VueRouter from 'vue-router'
import Layout from '@/layout'
import store from '@/store'

Vue.use(VueRouter)

// 动态路由规则
const tableRule = {
  path: '/table',
  name: 'table',
  component: () => import('@/views/table/index.vue')
}
const imageRule = {
  path: '/image',
  name: 'image',
  component: () => import('@/views/image')
}
const userRule = {
  path: '/users',
  name: 'users',
  component: () => import('@/views/users')
}

// 路由规则和字符串的映射关系
const ruleMapping = {
  table: tableRule,
  users: userRule,
  image: imageRule
}

//静态路由
const routes = [
  {
    path: '/login',
    // name: 'login', // 这里如果有name 控制台会提示
    component: () => import('@/views/login')
  },
  {
    path: '/',
    component: Layout,
    children: [
      {
        path: '',
        // name: 'home',
        component: () => import('@/views/home')
      },
      {
        path: '/chart',
        component: () => import('@/views/chart')
      }
    ]
  }
]

const router = new VueRouter({
  routes
})



//路由权限：用户登录后接口返回，存储到本地缓存
const rightList = [
  {
    id: 1,
    authName: "基本页面",
    icon: "el-icon-connection",
    children: [
      {
        id: 11,
        authName: "表格页面",
        icon: "el-icon-s-grid",
        path: "table",
        rights: ["view", "edit", "add", "delete"]
      },
      {
        id: 12,
        authName: "素材页面",
        icon: "el-icon-s-marketing",
        path: "image",
        rights: ["view", "edit", "add", "delete"]
      }
    ]
  },
  {
    id: 2,
    authName: "用户权限",
    icon: "el-icon-set-up",
    children: [
      {
        id: 21,
        authName: "权限页面",
        icon: "el-icon-s-custom",
        path: "users",
        rights: ["view", "edit", "add", "delete"]
      }
    ]
  }
];

//在登录(login.vue)、页面刷新（App.vue）的时候，调用initDynamicRoutes
export function initDynamicRoutes () {
  // 根据二级权限 对路由规则进行动态的添加
  const currentRoutes = router.options.routes
  rightList.forEach(item => { // 如果是没有子路由的话 就直接添加进去 如果有子路由的话就进入二级权限遍历
    if (item.path) {
      const temp = ruleMapping[item.path]
      // 路由规则中添加元数据meta
      temp.meta = item.rights
      currentRoutes[1].children.push(temp)
    }

    item.children.forEach(item => {
      // item 二级权限
      const temp = ruleMapping[item.path]
      // 路由规则中添加元数据meta，用于按钮权限控制
      temp.meta = item.rights
      currentRoutes[1].children.push(temp)
    })
  })
  // 添加路由规则
  router.addRoutes(currentRoutes)
}

export default router

<el-button v-permission="[$route.path, 'add']">添加</el-button>
directives: {
        // 检测全选的指令
        permission: {
            // 绑定此指令的标签插入到dom节点触发
            inserted(el, bind) {
                // el:绑定该指令标签
                // bind:对象格式 当前绑定指令标签上的数据情况
                // 获取按钮上的value值，就是用户当前要使用的权限和请求的路由地址
                let value = bind.value//['/user','add']
                //模拟后端返回的当前角色对应的权限
                let rules = {
                    '/menu': ['add', 'edit'],
                    "/user": [ 'edit', 'remove'],
                    "/goods": ['add']
                }
                // 根据访问的路由地址获取该模块的操作权限
                let allow = rules[value[0]]
                // 检测当前操作是否合法
                if (!allow.includes(value[1])) {
                    // 不合法隐藏操作按钮
                    el.style = "display:none"
                }
            }
        }
 }

import axios from 'axios'
import router from '@/router'

const request = axios.create()

// 映射
const actionMapping = {
  get: 'view',
  post: 'add',
  put: 'edit',
  delete: 'delete'
}

// request.defaults.baseURL = 'http://127.0.0.1:7001' // 注释掉之后调的接口将是Mock数据

// 请求拦截器
request.interceptors.request.use(req => {
  // console.log(req.url)
  // console.log(req.method)
  if (req.url !== '/login' && req.url !== '/roles') {
    // 不是登录的请求 也不是获取权限的请求 则在请求头中加入token  不知道如何使用Mock来验证请求头中的token 故此处注释
    // req.headers.Authorization = sessionStorage.getItem('token')
    const action = actionMapping[req.method]
    // 判断非权限范围内的请求
    // console.log(router)
    const currentRight = router.currentRoute.meta
    // console.log(currentRight)
    if (currentRight && currentRight.indexOf(action) === -1) {
      // 没有权限
      alert('没有权限')
      return Promise.reject(new Error('没有权限'))
    }
  }
  return req
})


export default request