在构建区结合左右勾勒出下图这样的布局

构建好后点击“复制代码”按钮，在项目中粘贴

粘贴好后修改这部分代码，改成适合自己项目的格式即可

代码如下：

<template>
  <div>
    <el-container class="home-container">
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '230px'">
        <!-- 头部logo -->
        <template>
          <div class="header-title" v-if="!isCollapse">
            <img width="145" height="55" src="../assets/img.png" style="border-radius: 10px" alt="">
          </div>
        </template>
        <!-- 菜单区域 -->
        <el-menu
          background-color="#282C34"
          text-color="#fff"
          active-text-color="#fff"
          :collapse="isCollapse"
          :collapse-transition="false"
          :default-active="'/' + activePath"
          unique-opened
          router>
          <!--active-text-color="#fff"当前激活菜单文字的颜色， :collapse折叠  :default-active当前激活菜单的index -->
          <!-- 首页 -->
          <el-menu-item
            :index="item.path" v-for="item in menuList"
            :key="item.id"
            @click="selectMenu(item)">
            <!--注意：index是必填属性，可以看成是ID，也就是说它是唯一的，代表路由的跳转-->
            <i :class="item.class"></i>
            <span slot="title">{{ item.label }}</span>
          </el-menu-item>
        </el-menu>
      </el-aside>
      <!-- 主体 -->
      <el-container>
        <!-- 头部 -->
        <el-header>
          <!-- 头部导航栏 -->
          <div class="header-row">
            <div class="toggle-button">
              <!-- 折叠 展开 -->
              <div>
                <i :title="isCollapse ? '展开' : '收起'" class="fa fa-bars" @click="toggleCollapse"></i>
              </div>
              <!--          当前加盟商-->
              <div style="height:20px;width:100%;margin-left:10px">
                <!--特殊图标-->
                <div style="float:left;color:#E74405;font-size:15px;height:20px;line-height:20px;">
                  <el-dropdown @command="changeFranchisee">
                    <span class="el-dropdown-link">当前加盟商<i class="el-icon-arrow-down el-icon--right"></i></span>
                    <el-dropdown-menu slot="dropdown">
                      <el-dropdown-item command="a">先智售宝</el-dropdown-item>
                      <el-dropdown-item command="b">洛阳家联宝</el-dropdown-item>
                      <el-dropdown-item command="d" disabled>智鼓运用中心</el-dropdown-item>
                      <el-dropdown-item command="e">山西运城</el-dropdown-item>
                    </el-dropdown-menu>
                  </el-dropdown>

                </div>
              </div>
            </div>
            <!-- 头像下拉菜单 -->
            <div class="header-avatar">
              <div class="user">
                管理员，您好！
              </div>
              <el-dropdown @command="handleCommand">
              <span class="el-dropdown-link">
                <img width="35" height="35" style="border-radius:50%;background:#dddddd"
                     src="../assets/images/index/user3.png" alt="">
                <i class="el-icon-arrow-down el-icon--right"></i>
              </span>
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item @click="logout()">
                    <router-link to="Logout">退出登录</router-link>
                  </el-dropdown-item>
                  <el-dropdown-item command="update-password">修改密码</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </div>
          </div>
          <!-- tab标签页区域 - 用于标签页切换 -->
          <div class="tabs-switch-page">
            <!-- 此处 size="small/middle/big" 规定按钮的大小；   //  @click="changeMenu(tab)"点击标签跳转路由   //@close="handleClose(tab, index)"关闭tab标签-->
            <!-- effect：主题,类似于vue2源码中的watch, 此处根据effect来判断   'dark' : 'plain' :是effect属性的可选值，点击的时候主题由plain变为dark-->
            <el-tag
              size="small"
              v-for="(tab, index) in tabList"
              :key="tab.name"
              @close="handleClose(tab, index)"
              @click="changeMenu(tab)"
              :closable="tab.name !== 'home'"
              :effect="activePath === tab.name ? 'dark' : 'plain'">
              {{ tab.label }}
            </el-tag>
          </div>
        </el-header>
        <!-- 内容区 -->
        <el-main>
          <!-- 路由占位符，用于展示内容区的内容 -->
          <div style="padding:15px; height:100%">
            <keep-alive :include="catch_components">
              <router-view/>
            </keep-alive>
          </div>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>
<script>
import {mapState, mapMutations} from 'vuex';

export default {
  components: {},
  //组件被创建
  created() {
    //加载菜单
    this.loadMenu();
  },
  computed: {
    ...mapState({ // 从 state 中的到的计算属性
      activePath: state => state.activePath, // 已选中菜单
      tabList: state => state.tabList,  // tags菜单列表
      catch_components: state => state.catch_components,  // keepalive缓存
    })
  },
  data() {
    return {
      //菜单列表
      menuList: [],
      // 折叠-展开 默认false不折叠
      isCollapse: false,
    }
  },
  methods: {
    // 点击折叠 展开菜单
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    //当前加盟商下拉框
    handleCommandAdd(commandAdd) {
      this.$message('click on item ' + commandAdd);
    },
    logout: function () {
      //回到登录页面
      //跳转 ==== 路由
      this.$router.push("/logout");
    },
    // 点击菜单 - 传入name，添加到keepalive缓存页面
    selectMenu(item) {
      // 加入keepalive缓存
      this.$store.commit('addKeepAliveCache', item.name)
      //添加tags标签
      //访问welcome 就代表home
      const name = item.name === 'welcome' ? 'home' : item.name;
      const submenu = {
        path: name,
        name: name,
        label: item.label
      };
      //修改选中菜单
      this.$store.commit('selectMenu', submenu)
    },
    // 关闭tab标签
    handleClose(tab, index) {
      // 历史选中菜单
      let oldActivePath = this.$store.state.activePath;
      // 历史已选中菜单列表
      const oldTabList = this.$store.state.tabList;
      // 计算标签个数
      let length = oldTabList.length - 1
      // 删除tabList中的该对象
      for (let i = 0; i < oldTabList.length; i++) {
        let item = oldTabList[i]
        if (item.name === tab.name) {
          oldTabList.splice(i, 1);
        }
      }
      // 删除keepAlive缓存
      this.$store.commit('removeKeepAliveCache', tab.name)
      // 如果关闭的标签不是当前路由的话，就不跳转
      if (tab.name !== oldActivePath) {
        return
      }
      // 如果length为1，必然只剩下首页标签，此时关闭后，更新到首页
      if (length === 1) {
        // 同时存储菜单
        this.$store.commit('closeTab', {activePath: 'home', tabList: oldTabList})
        // tab页向左跳转
        this.$router.push({name: oldTabList[index - 1].name})
        // 不再向下执行
        return
      }
      // 关闭的标签是最右边的话，往左边跳转一个
      if (index === length) {
        // 同时更新路径
        oldActivePath = oldTabList[index - 1].name
        // 同时存储菜单
        this.$store.commit('closeTab', {activePath: oldActivePath, tabList: oldTabList})
        // tab页向左跳转
        this.$router.push({name: oldTabList[index - 1].name})
      } else {
        // 同时更新路径
        oldActivePath = oldTabList[index].name
        // 同时存储菜单
        this.$store.commit('closeTab', {activePath: oldActivePath, tabList: oldTabList})
        // tab页向右跳转
        this.$router.push({name: oldTabList[index].name})
      }
    },
    // 点击标签跳转路由
    changeMenu(item) {
      // 历史选中菜单
      const oldActivePath = this.$store.state.activePath;
      // 首先判断点击的是否是自己，如果是自己则return
      if (oldActivePath === item.name) {
        return
      }
      // 不是自己，存储菜单
      this.$store.commit('changeMenu', item.name)
      // 页面跳转
      this.$router.push({name: item.name})
    },
    //加载菜单
    loadMenu() {
      this.menuList = [
        {
          id: 'number-01',
          class: 'fa el-icon-document',
          path: '/home',
          label: '首页',
          name: 'home'
        },
        {
          id: 'number-02',
          class: 'fa el-icon-document',
          path: '/commoditySales',
          label: '管理销量',
          name: 'commoditySales'
        },
        {
          id: 'number-03',
          class: 'fa el-icon-document',
          path: '/orderStatistics',
          label: '订单统计',
          name: 'orderStatistics'
        },
        {
          id: 'number-04',
          class: 'fa el-icon-document',
          path: '/test4',
          label: '商品管理',
          name: 'test4'
        },
        {
          id: 'number-05',
          class: 'fa el-icon-document',
          path: '/test5',
          label: '账户管理',
          name: 'test5'
        },
        {
          id: 'number-06',
          class: 'fa el-icon-document',
          path: '/form',
          label: '表单验证',
          name: 'form'
        },
        {
          id: 'number-07',
          class: 'fa el-icon-document',
          path: '/test7',
          label: '消息管理',
          name: 'test7'
        },
        {
          id: 'number-08',
          class: 'fa el-icon-document',
          path: '/Login',
          label: '登录中心',
          name: 'Login'
        },
        {
          id: 'number-09',
          class: 'fa el-icon-document',
          path: '/ServiceLog',
          label: '查询日志',
          name: 'ServiceLog'
        },
      ]
    }
  },
};
</script>
<style lang="less" scoped>
.el-col-align-middle {
  line-height: 40px;
  text-align: left;
  font-size: 14px;
}

//导航栏部分
.home-container {
  height: 100%;
}

.el-header {
  color: rgb(0, 0, 0);
  font-size: 20px;
  border-bottom: 1px solid #dddddd;
  height: 80px !important;
  padding: 0;
  background: #fff;
}

.header-row {
  height: 40px;
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: center;
  border-bottom: 1px solid #dddddd;
  overflow: hidden;
}

.header-avatar {
  float: right;
  width: 40%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 20px;
}

.user {
  font-size: 14px;
  font-weight: bold;
  padding: 0 10px;
}

.el-aside {
  background-color: #282C34;
  height: 100%;
}

.header-title {
  padding-left: 10px;
  height: 60px;
  font-weight: 300;
  display: flex;
  font-size: 20px;
  align-items: center;
  cursor: pointer;
  color: #ffffff;
}

h1 {
  margin-left: 10px;
}

.header-title-hiddle {
  width: 64px;
  height: 60px;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  cursor: pointer;
}

.el-menu {
  border-right: none;
}

// 菜单选中背景色
.el-menu-item.is-active {
  background-color: #1890FF !important;
}

// 菜单悬浮背景色
.el-menu-item:hover {
  background-color: #ee7c12 !important;
}

//main
.el-main {
  background-color: #eaedf1;
  padding: 5px;
  height: 100%;
}

//导航栏列表（图标和文字之间的距离）
.fa {
  margin-right: 10px;
}

// 点击展开/折叠按钮
.toggle-button {
  width: 80%;
  font-size: 20px;
  line-height: 40px;
  color: #595959;
  text-align: left;
  display: flex;
  align-items: center;
  float: left;
  padding-left: 15px;

  i {
    cursor: pointer;
  }
}

 面包屑导航
.el-breadcrumb {
  margin-bottom: 0;
}

// tab页 删除/添加页面
.tabs-switch-page {
  display: flex;
  align-items: center;
  height: 40px;
  background-color: #fff;
  overflow: hidden;
}

//tab内部标签之间的设置
.el-tag {
  cursor: pointer; //鼠标指针变成手
  margin-left: 10px;
  border-radius: 20px;
  font-size: 12px;
  color: #1890FF;
  border-color: #1890FF;
}

//tab单个页面选中后的样子
.el-tag--dark {
  color: #fff;
  background-color: #1890FF;
}

//当前加盟商 下拉框
.el-dropdown-link {
  cursor: pointer;
  color: #409EFF;
  font-size: 15px;
}

.el-icon-arrow-down {
  font-size: 15px;
}

.submit-row {
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
}
</style>

最后运行项目就能看到最终效果了