以下是组件代码：
<template> <div> <label v-for="navMenu in navMenus"> <el-menu-item v-if="navMenu.childs==null&&navMenu.entity&&navMenu.entity.state==='ENABLE'" :key="navMenu.entity.id" :data="navMenu" :index="navMenu.entity.name" :route="navMenu.entity.value" disabled=""> <i :class="navMenu.entity.icon"></i> <span slot="title">{{navMenu.entity.alias}}</span> </el-menu-item> <el-submenu v-if="navMenu.childs&&navMenu.entity&&navMenu.entity.state==='ENABLE'" :key="navMenu.entity.id" :data="navMenu" :index="navMenu.entity.name"> <template slot="title"> <i :class="navMenu.entity.icon"></i> <span> {{navMenu.entity.alias}}</span> </template> <NavMenu :navMenus="navMenu.childs"></NavMenu> </el-submenu> </label> </div> </template> <script> export default { name: 'NavMenu', props: ['navMenus'], data() { return {} }, methods: {} } </script> <style scoped> </style>
外部调用也比较简单
<!--左侧菜单组件--> <el-menu default-active="0" @select="menuSelected" background-color="#F0F6F6" text-color="#3C3F41" active-text-color="black"> <NavMenu :navMenus="leftMenus"></NavMenu> </el-menu>
最后看下效果：
值得一提的是，完成此菜单需要后端的配合，笔者这里后端给出的数据为：
{ "entity": null, "childs": [ { "entity": { "id": 1, "parentMenuId": 0, "name": "systemManage", "icon": "el-icon-message\r\n", "alias": "系统管理", "state": "ENABLE", "sort": 0, "value": null, "type": "NONE", "discription": "用于系统管理的菜单", "createUserId": 1 }, "childs": [ { "entity": { "id": 3, "parentMenuId": 1, "name": "authManage", "icon": "el-icon-loading", "alias": "权限管理", "state": "ENABLE", "sort": 0, "value": "/system/auth", "type": "LINK", "discription": "用于权限管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 4, "parentMenuId": 1, "name": "roleManage", "icon": "el-icon-bell", "alias": "角色管理", "state": "ENABLE", "sort": 1, "value": "/system/role", "type": "LINK", "discription": "用于角色管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 2, "parentMenuId": 1, "name": "menuManage", "icon": "el-icon-edit", "alias": "菜单管理", "state": "ENABLE", "sort": 2, "value": "/system/menu", "type": "LINK", "discription": "用于菜单管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 5, "parentMenuId": 1, "name": "groupManage", "icon": "el-icon-mobile-phone\r\n", "alias": "分组管理", "state": "ENABLE", "sort": 3, "value": "/system/group", "type": "LINK", "discription": "用于分组管理的菜单", "createUserId": 1 }, "childs": null } ] }, { "entity": { "id": 6, "parentMenuId": 0, "name": "userManage", "icon": "el-icon-news", "alias": "用户管理", "state": "ENABLE", "sort": 1, "value": null, "type": "NONE", "discription": "用于用户管理的菜单", "createUserId": 1 }, "childs": [ { "entity": { "id": 7, "parentMenuId": 6, "name": "accountManage", "icon": "el-icon-phone-outline\r\n", "alias": "帐号管理", "state": "ENABLE", "sort": 0, "value": "", "type": "NONE", "discription": "用于帐号管理的菜单", "createUserId": 1 }, "childs": [ { "entity": { "id": 14, "parentMenuId": 7, "name": "emailManage", "icon": "el-icon-sold-out\r\n", "alias": "邮箱管理", "state": "ENABLE", "sort": 0, "value": "/content/email", "type": "LINK", "discription": "用于邮箱管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 13, "parentMenuId": 7, "name": "passManage", "icon": "el-icon-service\r\n", "alias": "密码管理", "state": "ENABLE", "sort": 1, "value": "/content/pass", "type": "LINK", "discription": "用于密码管理的菜单", "createUserId": 1 }, "childs": null } ] }, { "entity": { "id": 8, "parentMenuId": 6, "name": "integralManage", "icon": "el-icon-picture", "alias": "积分管理", "state": "ENABLE", "sort": 1, "value": "/user/integral", "type": "LINK", "discription": "用于积分管理的菜单", "createUserId": 1 }, "childs": null } ] }, { "entity": { "id": 9, "parentMenuId": 0, "name": "contentManage", "icon": "el-icon-rank", "alias": "内容管理", "state": "ENABLE", "sort": 2, "value": null, "type": "NONE", "discription": "用于内容管理的菜单", "createUserId": 1 }, "childs": [ { "entity": { "id": 10, "parentMenuId": 9, "name": "classifyManage", "icon": "el-icon-printer", "alias": "分类管理", "state": "ENABLE", "sort": 0, "value": "/content/classify", "type": "LINK", "discription": "用于分类管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 11, "parentMenuId": 9, "name": "articleManage", "icon": "el-icon-star-on", "alias": "文章管理", "state": "ENABLE", "sort": 1, "value": "/content/article", "type": "LINK", "discription": "用于文章管理的菜单", "createUserId": 1 }, "childs": null }, { "entity": { "id": 12, "parentMenuId": 9, "name": "commentManage", "icon": "el-icon-share", "alias": "评论管理", "state": "ENABLE", "sort": 2, "value": "/content/comment", "type": "LINK", "discription": "用于评论管理的菜单", "createUserId": 1 }, "childs": null } ] } ] }
总结：当遇到多叉树或无限层级问题时，vue的递归组件是个比较好的解决方案，可以较大的节约开发时间降低开发成本。