第六-2权限管理前端权限对接

硅谷通用权限系统：前端权限对接

一、菜单权限及按钮权限

按照下面步骤即可完成前端框架权限对接

1、修改request.js文件

2、store/modules/user.js

新增菜单及按钮处理

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: '',

    buttons: [], // 新增
    menus: '' //新增
  }
}

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  
  // 新增
  SET_BUTTONS: (state, buttons) => {
    state.buttons = buttons
  },
  // 新增
  SET_MENUS: (state, menus) => {
    state.menus = menus
  }
}

// get user info
getInfo({ commit, state }) {
  return new Promise((resolve, reject) => {
    getInfo().then(response => {
      const { data } = response

      if (!data) {
        return reject('Verification failed, please Login again.')
      }

      const { name, avatar } = data

      commit('SET_NAME', name)
      commit('SET_AVATAR', avatar)

      commit("SET_BUTTONS", data.buttons)
      commit("SET_MENUS", data.routers)
      resolve(data)
    }).catch(error => {
      reject(error)
    })
  })
}

3、store/getters.js

新增菜单及按钮处理

const getters = {
  sidebar: state => state.app.sidebar,
  device: state => state.app.device,
  token: state => state.user.token,
  avatar: state => state.user.avatar,
  name: state => state.user.name,

  //新增
  buttons: state => state.user.buttons,
  menus: state => state.user.menus
}
export default getters

4、src/router

先在router这个目录下新建两个js文件，开发环境和生产环境导入组件的方式略有不同

_import_production.js

// 生产环境导入组件
module.exports = file => () => import('@/views/' + file + '.vue')

_import_development.js

// 开发环境导入组件
module.exports = file => require('@/views/' + file + '.vue').default // vue-loader at least v13.0.0+

5、src/permission.js

整体替换该文件

import router from './router'
import store from './store'
import { getToken } from '@/utils/auth'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // 水平进度条提示: 在跳转路由时使用
import 'nprogress/nprogress.css' // 水平进度条样式
import getPageTitle from '@/utils/get-page-title' // 获取应用头部标题的函数
import Layout from '@/layout'
import ParentView from '@/components/ParentView'
const _import = require('./router/_import_'+process.env.NODE_ENV) // 获取组件的方法

NProgress.configure({ showSpinner: false }) // NProgress Configuration
const whiteList = ['/login'] // no redirect whitelist
router.beforeEach(async(to, from, next) => {
  NProgress.start()
// set page title
  document.title = getPageTitle(to.meta.title)
// determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
      const hasGetUserInfo = store.getters.name
      if (hasGetUserInfo) {
        next()
      } else {
        try {
          // get user info
          await store.dispatch('user/getInfo')// 请求获取用户信息
          if (store.getters.menus.length < 1) {
            global.antRouter = []
            next()
          }
          const menus = filterAsyncRouter(store.getters.menus)// 1.过滤路由
          console.log(menus)
          router.addRoutes(menus) // 2.动态添加路由
          let lastRou = [{ path: '*', redirect: '/404', hidden: true }]
          router.addRoutes(lastRou)
          global.antRouter = menus // 3.将路由数据传递给全局变量，做侧边栏菜单渲染工作
          next({
            ...to,
            replace: true
          })
          //next()
        } catch (error) {
          // remove token and go to login page to re-login
          console.log(error)
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else { /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => { // finish progress bar
  NProgress.done()
}) // // 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (route.component) {
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else {
        try {
          route.component = _import(route.component)// 导入组件
        } catch (error) {
          debugger
          console.log(error)
          route.component = _import('dashboard/index')// 导入组件
        }
      }
    }
    if (route.children && route.children.length > 0) {
      route.children = filterAsyncRouter(route.children)
    } else {
      delete route.children
    }
    return true
  })
  return accessedRouters
}

6、src/router

删除index.js中自定义的路由，以下注释内容即为要删除的内容

export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  // {
  //   path: '/404',
  //   component: () => import('@/views/404'),
  //   hidden: true
  // },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: 'Dashboard', icon: 'dashboard' }
    }]
  }


  //添加我们的路由
  // {
  //   path: '/system',
  //   component: Layout,
  //   meta: {
  //     title: '系统管理',
  //     icon: 'el-icon-s-tools'
  //   },
  //   alwaysShow: true,
  //   children: [
  //     {
  //       path: 'sysRole',
  //       component: () => import('@/views/system/sysRole/list'),
  //       meta: {
  //         title: '角色管理',
  //         icon: 'el-icon-s-help'
  //       },
  //     },
  //     {
  //       path: 'sysUser',
  //       component: () => import('@/views/system/sysUser/list'),
  //       meta: {
  //         title: '用户管理',
  //         icon: 'el-icon-s-help'
  //       },
  //     },

  //     {
  //       name: 'sysMenu',
  //       path: 'sysMenu',
  //       component: () => import('@/views/system/sysMenu/list'),
  //       meta: {
  //         title: '菜单管理',
  //         icon: 'el-icon-s-unfold'
  //       },
  //     },

  //     {
  //       path: 'assignAuth',
  //       component: () => import('@/views/system/sysRole/assignAuth'),
  //       meta: {
  //         activeMenu: '/system/sysRole',
  //         title: '角色授权'
  //       },
  //       hidden: true,
  //     }
  //   ]
  // },


  // 404 page must be placed at the end !!!
  // { path: '*', redirect: '/404', hidden: true }
]

7、src/components

在scr/components目录下新建ParentView文件夹，添加index.vue

<template >
  <router-view />
</template>

8、layout/components/SideBar/index.vue

computed: {
  ...mapGetters([
    'sidebar'
  ]),
  routes() {
    //return this.$router.options.routes
    return this.$router.options.routes.concat(global.antRouter)
  },

9、utils/btn-permission.js

在uitls目录添加btn-permission.js文件

import store from '@/store'

/**
 * 判断当前用户是否有此按钮权限
 * 按钮权限字符串 permission 
 */
export default function hasBtnPermission(permission) {
  // 得到当前用户的所有按钮权限
  const myBtns = store.getters.buttons
  // 如果指定的功能权限在myBtns中, 返回true ==> 这个按钮就会显示, 否则隐藏
  return myBtns.indexOf(permission) !== -1
}

10、main.js

//新增
import hasBtnPermission from '@/utils/btn-permission'
Vue.prototype.$hasBP = hasBtnPermission

11、按钮权限控制

$hasBP('bnt.sysRole.add')控制按钮是否显示

如：角色管理添加按钮，我们没让按钮隐藏，而是让按钮不可操作

<el-button type="success" icon="el-icon-plus" size="mini" @click="add" :disabled="$hasBP('bnt.sysRole.add')  === false">添 加</el-button>