0 前言

最近在自己搞一个前后端小项目，前端想使用ant-design-vue的layout组件实现动态导航栏和面包屑，但是网上的资料较少，所以我就自己整合实现了一下，在此记录分享。

1 准备工作

基于一个新建的Vue3项目上实现。

1.1 安装ant-design-vue

官方文档：Components Overview - Ant Design Vue (antdv.com)

安装：

npm i --save ant-design-vue

全局注册：

import { createApp } from 'vue';
import Antd from 'ant-design-vue';
import App from './App';
import 'ant-design-vue/dist/antd.css';

const app = createApp(App);

app.use(Antd).mount('#app');

1.2 安装图标组件包

npm install --save @ant-design/icons-vue

main.js中引用并全局注册

import * as Icons from '@ant-design/icons-vue'
//全局注册图标
const icons = Icons
for (const i in icons) {
  app.component(i, icons[i])
}

2 选择组件

如下图所示，复制组件代码：

3 路由文件

router/index.js文件

import { createRouter, createWebHashHistory } from 'vue-router'

const routes = [
  {
    //导航页
    path: '/layout',
    name: 'layout',
    meta: {
      title: '首页',
      keepalive: true
    },
    component: () => import('@/views/layout/'),
    children: [
      {
        //欢迎页
        path: '/layout',
        name: 'welcome',
        meta: {
          title: '首页',
          keepalive: true
        },
        component: () => import('@/views/welcome/')
      },
      {
        //实时数据
        path: '/runtimeData',
        name: 'runtimeData',
        meta: {
          title: '实时数据',
          keepalive: true
        },
        component: () => import('@/views/runtimeData/')
      },
      {
        //数据分析
        path: '/dataAnalysis',
        name: 'dataAnalysis',
        meta: {
          title: '数据分析',
          keepalive: true
        },
        component: () => import('@/views/dataAnalysis/')
      },
      {
        //数据处理(增删改查)
        path: '/dataManage',
        name: 'dataManage',
        meta: {
          title: '数据总览',
          keepalive: true
        },
        component: () => import('@/views/dataManage/')
      },
      {
        //查看用户信息
        path: '/showUserInfo',
        name: 'showUserInfo',
        meta: {
          title: '查看用户信息',
          keepalive: true
        },
        component: () => import('@/views/my/showUserInfo.vue')
      },
      {
        //修改用户信息
        path: '/editUserInfo',
        name: 'editUserInfo',
        meta: {
          title: '修改用户信息',
          keepalive: true
        },
        component: () => import('@/views/my/editUserInfo.vue')
      },
    ]
  },
  {
    //登录页面
    path: '/login',
    name: 'login',
    meta: {
      title: '登录',
      keepalive: true
    },
    component: () => import('@/views/login/index.vue')
  },

]

const router = createRouter({
  history: createWebHashHistory(),
  routes
})

export default router

4 Vue导航页面

views/layout/index.vue，主要关注标签a-layout中的内容及相关变量

<template>
  <a-layout id="components-layout-demo-custom-trigger" style="min-height: 100vh">
    <a-layout-sider v-model:collapsed="collapsed" collapsible>

      <div class="logo">
        温湿度数据显示
      </div>


      <a-menu @click="navClick"
              v-model="currentSelectChild"
              @openChange="onOpenChange"
              :openKeys="currentParent"
              :inline-collapsed="collapsed"
              :selectedKeys="[route.path]"
              theme="dark"
              mode="inline"
      >

        <template v-for='(item,index) in NavDataInfo.NavData'>
          <a-sub-menu :key="item.Path" v-if='item.Child.length > 0'>
            <template #title>
              <a-icon>
                <meh-outlined/>
              </a-icon>
              <span>{{item.Title}}</span>
            </template>
            <a-menu-item v-for="(itChild,ind) in item.Child" :key="itChild.Path">
              <a-icon>
                <meh-outlined/>
              </a-icon>
              <router-link :to="itChild.Path">
                <!--根据路径去跳转页面-->
                {{itChild.Title}}
              </router-link>
            </a-menu-item>
          </a-sub-menu>


          <a-menu-item :key="item.Path" v-else>
            <a-icon>
              <meh-outlined/>
            </a-icon>
            <router-link :to="item.Path">
              <a-icon :type="item.Icons"/>
              <span>{{item.Title}}</span>
            </router-link>
          </a-menu-item>

        </template>

      </a-menu>

    </a-layout-sider>
    <a-layout>
      <a-layout-header style="background: #fff; padding: 0">
        <div id="header">
          <div id="left">
            <span>作者：</span>
          </div>
          <div id="right">
            <a-avatar src="https://joeschmoe.io/api/v1/random"/>
            <el-dropdown>
              <span class="el-dropdown-link">
                User
                <el-icon class="el-icon--right">
                  <arrow-down />
                </el-icon>
              </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item><router-link to="/showUserInfo">我的信息</router-link></el-dropdown-item>
                  <el-dropdown-item><router-link to="/editUserInfo">修改信息</router-link></el-dropdown-item>
                  <el-dropdown-item><span @click="outLogin">退出登录</span></el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </div>
        </div>
      </a-layout-header>
      <!--      <keep-alive>-->
      <a-layout-content style="margin: 0 16px">
        <!-- 面包屑 -->
        <a-breadcrumb style="margin: 16px 0" separator=">">
          <!-- 自定义返回函数 ←-->
          <a-breadcrumb-item @click="goback">
            <a-icon>
              <import-outlined/>
            </a-icon>
            返回
          </a-breadcrumb-item>
          <a-breadcrumb-item v-for="(item, index) in breadList" :key="item.name">
            <router-link v-if="item.name !== name && index !== 1"
                         :to="{ path: item.path === '' ? '/' : item.path }">
              {{ item.meta.title }}
            </router-link>
            <span v-else>
              {{ item.meta.title }}
            </span>
          </a-breadcrumb-item>
        </a-breadcrumb>
        <!--          <transition>-->
        <div :style="{ padding: '24px', background: '#fff', minHeight: '100%' }">
          <router-view/>
        </div>
        <!--          </transition>-->
      </a-layout-content>
      <!--      </keep-alive>-->
      <a-layout-footer style="text-align: center">
        Great Project ©2022 Created by 
      </a-layout-footer>
    </a-layout>
  </a-layout>
</template>
<script setup>
  import { ref, reactive, onBeforeMount, watch, createVNode } from 'vue'
  import { useRouter, useRoute } from 'vue-router'
  import { Modal, message } from 'ant-design-vue'
  import { ExclamationCircleOutlined } from '@ant-design/icons-vue'
  import myRouter from '@/router'
  import { ArrowDown } from '@element-plus/icons-vue'
  //************************************************data部分
  const route = useRoute()
  const router = useRouter()
  const collapsed = ref(false)
  const selectedKeys = ref(['0'])
  const name = ref('')
  const breadList = ref([])
  const NavDataInfo = reactive({
    NavData: [
      {
        NavID: '0',
        Icons: 'home',
        Title: '首页',
        Path: '/layout',
        Child: []
      },
      {
        NavID: '1',
        Icons: 'meh',
        Title: '实时数据',
        Path: '/runtimeData',
        Child: []
      },
      {
        NavID: '2',
        Icons: 'like',
        Title: '数据管理',
        Path: '/dataManage',
        Child: [
          {
            NavID: '2-1',
            Icons: 'man',
            Title: '数据总览',
            Path: '/dataManage',
            Child: []
          },
        ]
      },
      {
        NavID: '3',
        Icons: 'key',
        Title: '数据分析',
        Path: '/dataAnalysis',
        Child: []
      },
    ],
  })
  //************************************************data部分

  //************************************************方法
  const getBreadcrumb = () => {
    breadList.value = []
    name.value = route.name
    route.matched.forEach(item => {
      breadList.value.push(item)
    })
    console.log(breadList.value)
    console.log(name.value)
    console.log(route)

  }
  // 返回上一页，调用的组件 router.back();
  const goback = () => {
    //点击了返回按钮
    router.back()
  }

  //退出登录
  const outLogin = () => {
    Modal.confirm({
      title: '您确定要退出登录吗？',
      icon: createVNode(ExclamationCircleOutlined),
      content: createVNode('div', {
        style: 'color:red;',
      }, '点击OK则将退出！'),
      onOk () {
        // console.log('OK', key)
        message.success('退出登录!')
        myRouter.push({ path: "/login" });
      },
      onCancel () {
        // console.log('Cancel')
        message.success('取消成功!')
      },
      class: 'test',
    })
  }

  //监视路由
  watch(() => route.path, getBreadcrumb)

  //*************************************************方法

  //*************************************************生命周期
  onBeforeMount(() => {
    getBreadcrumb()
  })
  //*************************************************生命周期


</script>
<style scoped>
  #components-layout-demo-custom-trigger {
    height: 100%;
  }

  #components-layout-demo-custom-trigger .trigger {
    font-size: 18px;
    line-height: 64px;
    padding: 0 24px;
    cursor: pointer;
    transition: color 0.3s;
  }

  #components-layout-demo-custom-trigger .trigger:hover {
    color: #1890ff;
  }

  #components-layout-demo-custom-trigger .logo {
    height: 32px;
    background: rgb(127, 252, 255);
    margin: 16px;
    font-size: 20px;
    text-align: center;
    font-family: 宋体;
  }

  #header {
    display: flex;
    height: 70px;
    /*margin: 0;*/
    padding: 0;
  }

  #left {
    width: 80%;
    /*height: 25px;*/
    /*background-color: darksalmon;*/
    justify-content: flex-start;
    display: flex;
    align-items: center;
    margin-left: 16px;
  }

  #right {
    flex: 1;
    width: 20%;
    /*background-color: coral;*/
    /*height: 50px;*/
    justify-content: flex-end;
    display: flex;
    align-items: center;
    margin-right: 16px;
  }
  .example-showcase .el-dropdown-link {
    cursor: pointer;
    color: var(--el-color-primary);
    display: flex;
    align-items: center;
  }

</style>

上面的代码中将路由文件中的路由表重新写了一个变量，主要是为了方便，并不是所有页面路由都要制作导航栏，这样就不用在router/index.js中添加路由时考虑太多。