addRoutes implements dynamic permission routing menu

import Vue from 'vue'
import Router from 'vue-router'
import store from '@/vuex/store'
Vue.use(Router)

let router = new Router({
  routes: [
    {
      path: '/login',
      name: 'login',
      meta: {requireAuth: false},
      // 模块使用异步加载
      component: (resolve) => require(['../components/login/login.vue'], resolve)
    }]
})
// 拦截登录，token验证
router.beforeEach((to, from, next) => {
  if (to.meta.requireAuth === undefined) {
    if (store.state.token) {
      next()
    } else {
      next({
        path: '/login'
      })
    }
  } else {
    next()
  }
})
export default router

let router = new Router({
  routes: [
    {
      path: '/login',
      name: 'login',
      meta: {requireAuth: false},
      component: (resolve) => require(['../components/login/login.vue'], resolve)
    }，
    {
        path: '/',
        redirect: '/layout'
    },
    {
        path: '/layout',
        component: (resolve) => require(['../layout.vue'], resolve),
        children: [
            {
                path: 'index', 
                meta: {
                    type: '1',       //控制是否显示隐藏 1显示，2隐藏
                    code: 00010001,  // 后面需要控制路由高亮
                    title: '首页',    // 菜单名称
                    permissonList: [] // 权限列表
                }
                component: (resolve) => require(['@/components/index/index.vue'], resolve)
            },
            {
            ...
            }      
        ]
    }]
})

// 登录
      login () {
        let params = {
          account: this.loginForm.username,
          password: encrypt(this.loginForm.password)
        }
        this.loading = true
        this.$http.post(this.$bumng + '/login', this.$HP(params))
          .then((res) => {
            this.loging = false
            console.info('菜单列表：', res)
            if (res.resultCode === this.$state_ok) {
              // 合并一级菜单和二级菜单，便于显示
              let menus = handleMenu.mergeSubInRoot(res.rootList, res.subList)
              // 本地化处理好的菜单列表
              this.saveRes({label: 'menuList', value: menus})
              // 根据subList处理路由
              let routes = handleMenu.mergeRoutes(res.subList)
              // 本地化subList，便于在刷新页面的时候重新配置路由
              this.saveRes({label: 'subList', value: res.subList})
              // 防止重复配置相同路由
              if (this.$router.options.routes.length  {
            this.loging = false
            console.error('错误：', err)
          })
      },

const routes = [
  {
    path: '/',
    redirect: '/layout'
  },
  {
    path: '/layout',
    component: (resolve) => require(['../layout.vue'], resolve),
    children: []
  }
]
export default {
  /**
   * 合并主菜单和子菜单
   * @param: rootList [Array] 主菜单列表
   * @param: subList [Array] 子菜单
   * */
  mergeSubInRoot (roots, subs) {
    if (roots && subs) {
      for (let i = 0; i  require([`@/components/${subs[i].component}.vue`], resolve),
          meta: {
            type: subs[i].type,
            code: subs[i].code,
            title: subs[i].name,
            permissionList: subs[i].permissionList
          }
        }
        routes[1].children.push(temp)
      }
    }
    return routes
  }
}

<template>
    <p>
      <el-menu>
        <el-menu-item>
          <i></i>
          <span>{{item.name}}</span>
        </el-menu-item>
      </el-menu>
    </p>
</template>

<script>
  import {mapState, mapMutations} from &#39;vuex&#39;
  export default {
    name: &#39;menu&#39;,
    data () {
      return {
        msg: &#39;Welcome to Your Vue.js App&#39;
      }
    },
    computed: {
      ...mapState([&#39;menuList&#39;]),
      activeCode () {
          // 通过code保证在切换字路由的情况下一级路由也是高亮显示
        return this.$route.meta.code.substring(0, 4)
      }
    },
    methods: {
      ...mapMutations([&#39;saveRes&#39;]),
      // 切换二级路由
      switchSubMenu (route) {
        console.info(&#39;路由：&#39;, route)
        if (route.actUrl !== &#39;index&#39;) {
          // 用currentSubMenu控制二级路由数据  
          this.saveRes({label: &#39;currentSubMenu&#39;, value: route.children})
          this.$router.push(`/layout/${route.children[0].actUrl}`)
        } else {
          // 不存在二级路由隐藏二级 
          this.saveRes({label: &#39;currentSubMenu&#39;, value: &#39;&#39;})
          this.$router.push(`/layout/${route.actUrl}`)
        }
      }
    },
    filters: {
      splitCode (code) {
        return code.substring(0, 4)
      }
    }
  }
</script>

<script>
  import {decrypt} from &#39;@/libs/AES&#39;
  import handleMenu from &#39;@/router/handleMenu&#39;
  export default {
    name: &#39;app&#39;,
    created () {
      // 当this.$router.options.routes的长度为1，且本地缓存存在菜单列表的时候才重新配置路由
      if (this.$router.options.routes.length <= 1 && sessionStorage.getItem(&#39;subList&#39;)) {
        let subList = JSON.parse(decrypt(sessionStorage.getItem(&#39;subList&#39;)))
        let routes = handleMenu.mergeRoutes(subList)
        this.$router.addRoutes(routes)
        // this.$router不是响应式的，所以手动将路由元注入路由对象
        this.$router.options.routes.push(routes)
      }
    }
  }
</script>