主要修改以下几个点：
CommonAside.vue中
外层便利有孩子节点，关键词key是对应的标签，class动态图表渲染
内层遍历不能再用item，用subitem，遍历该item.childeren，关键词是path，
<template><div><el-menudefault-active="1-4-1"class="el-menu-vertical-demo"@open="handleOpen"@close="handleClose":collapse="isCollapse"background-color="#545c64"text-color="#fff"active-text-color="#ffd04b"><!-- 无子页 --><el-menu-item v-for="item in noChildren" :key="item.name" :index="item.name"><!-- i标签是图标 --><!-- 静态渲染 --><!-- <i :class="el-icon-menu"></i> --><!-- 动态渲染 --><i :class="`el-icon-${item.icon}`"></i><!-- 导航的文字 --><span slot="title">{{item.label}}</span></el-menu-item><!-- 有子页 --><!-- 一级渲染 --><el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label"><template slot="title"><i :class="`el-icon-${item.icon}`"></i><span slot="title">{{ item.label }}</span></template><!-- 二级渲染 --><el-menu-item-group v-for="subitem in item.children" :key="subitem.path" ><el-menu-item :index="subitem.path">{{ subitem.label }}</el-menu-item></el-menu-item-group></el-submenu><!--<el-submenu index="1"><template slot="title"><i class="el-icon-location"></i><span slot="title">导航一</span></template><el-menu-item-group><el-menu-item index="1-1">选项1</el-menu-item><el-menu-item index="1-2">选项2</el-menu-item></el-menu-item-group></el-submenu> --></el-menu></div>
</template><style>.el-menu-vertical-demo:not(.el-menu--collapse) {width: 200px;min-height: 400px;}
</style><script>export default {data() {return {isCollapse: false,menuData: [{path: '/',name: 'home',label: '首页',icon: 's-home',url: 'Home/Home'},{path: '/mall',name: 'mall',label: '商品管理',icon: 'video-play', //图标url: 'MallManage/MallManage'},{path: '/user',name: 'user',label: '用户管理',icon: 'user',url: 'UserManage/UserManage'},{label: '其他',icon: 'location',children: [{path: '/page1',name: 'page1',label: '页面1',icon: 'setting',url: 'Other/PageOne'},{path: '/page2',name: 'page2',label: '页面2',icon: 'setting',url: 'Other/PageTwo'}]}]};},methods: {handleOpen(key, keyPath) {console.log(key, keyPath);},handleClose(key, keyPath) {console.log(key, keyPath);}},computed:{//无子菜单noChildren() {return this.menuData.filter(item => !item.children)},//有子菜单hasChildren() {return this.menuData.filter(item => item.children)}},}
</script>
