<a-menu theme="dark" mode="inline" :selectedKeys="[$route.path]">
     <a-menu-item :key="'/home'">
      <router-link to="home">
       <a-icon type="user" />
       <span>nav 1</span>
      </router-link>
     </a-menu-item>
     <a-menu-item :key="'/about'">
      <router-link to="about">
       <a-icon type="video-camera" />
       <span>nav 2</span>
      </router-link>
     </a-menu-item>
     <a-menu-item :key="'/123123'">
      <router-link to="123123">
       <a-icon type="upload" />
       <span>nav 3</span>
      </router-link>
     </a-menu-item>
    </a-menu>

 <div id="app">
   <router-view v-if="isRouterAlive"></router-view>
 </div>

 provide() {
   return{
    reload: this.reload
   }
  },
  data() {
   return {
    isRouterAlive: true
   }
  },
 methods: {
   reload () {
    this.isRouterAlive = false;
    this.$nextTick(function () {
     this.isRouterAlive = true
    })
   }
  },

inject: ['reload'], // 注入重载的功能（注入依赖）
watch: {
  //检测路由参数发生改变时，刷新当前页面 调用
  '$route': function(){
   // this.reload();
  }
 },

 <el-menu-item v-if="validatenull(item[childrenKey]) && vaildRoles(item)"
          :index="item[pathKey]"
          @click="open(item)"
          :key="item[labelKey]"
          :class="{'is-active':vaildAvtive(item)}"
          >

open(item) {
   if (this.screen <= 1) this.$store.commit("SET_COLLAPSE");
   this.$router.$avueRouter.group = item.group;
   this.$router.push({
    path: this.$router.$avueRouter.getPath({
     name: item[this.labelKey],
     src: item[this.pathKey]
    }),
    query: item.query,
   });
   this.reload();
  },