在routes中加个属性children，要嵌套的地址就写进children中

编写关于用户的视图

用户列表

<template>
<h1>用户列表</h1>
</template>

<script>
export default {
  name: "List"
}
</script>

<style scoped>

</style>

用户信息

<template>
<h1>用户信息</h1>
</template>

<script>
export default {
  name: "Profile"
}
</script>

<style scoped>

</style>

在router中注册路由

{
      path: "/main",
      component: Main,
      children: [{
        path: "/user/userList",
        component: userList
      },
        {
          path: '/user/userProfile',
          component: userProfile
        }
      ]
    }

我想在main页面嵌入用户列表，所以在main中嵌入

main页面

<template>
<el-container style="height: 500px; border: 1px solid #eee">
<el-aside width="200px" style="background-color: rgb(238, 241, 246)">
  <el-menu :default-openeds="['1', '3']">
    <el-submenu index="1">
      <template slot="title"><i class="el-icon-message"></i>导航一</template>
      <el-menu-item-group>
        <el-menu-item index="1-1">
          <router-link to="/user/userList" >用户列表</router-link>
        </el-menu-item>
        <el-menu-item index="1-2">
          <router-link to="/user/userProfile">用户信息</router-link>
        </el-menu-item>
      </el-menu-item-group>
    </el-submenu>
    <el-submenu index="2">
      <template slot="title"><i class="el-icon-menu"></i>导航二</template>
      <el-menu-item-group>
        <template slot="title">分组一</template>
        <el-menu-item index="2-1">选项1</el-menu-item>
        <el-menu-item index="2-2">选项2</el-menu-item>
      </el-menu-item-group>
      <el-menu-item-group title="分组2">
        <el-menu-item index="2-3">选项3</el-menu-item>
      </el-menu-item-group>
      <el-submenu index="2-4">
        <template slot="title">选项4</template>
        <el-menu-item index="2-4-1">选项4-1</el-menu-item>
      </el-submenu>
    </el-submenu>
    <el-submenu index="3">
      <template slot="title"><i class="el-icon-setting"></i>导航三</template>
      <el-menu-item-group>
        <template slot="title">分组一</template>
        <el-menu-item index="3-1">选项1</el-menu-item>
        <el-menu-item index="3-2">选项2</el-menu-item>
      </el-menu-item-group>
      <el-menu-item-group title="分组2">
        <el-menu-item index="3-3">选项3</el-menu-item>
      </el-menu-item-group>
      <el-submenu index="3-4">
        <template slot="title">选项4</template>
        <el-menu-item index="3-4-1">选项4-1</el-menu-item>
      </el-submenu>
    </el-submenu>
  </el-menu>
</el-aside>

<el-container>
  <el-header style="text-align: right; font-size: 12px">
    <el-dropdown>
      <i class="el-icon-setting" style="margin-right: 15px"></i>
      <el-dropdown-menu slot="dropdown">
        <el-dropdown-item>查看</el-dropdown-item>
        <el-dropdown-item>新增</el-dropdown-item>
        <el-dropdown-item>删除</el-dropdown-item>
      </el-dropdown-menu>
    </el-dropdown>
    <span>王小虎</span>
  </el-header>

  <el-main>
    <router-view></router-view>
  </el-main>

</el-container>
</el-container>
</template>
<style>
.el-header {
  background-color: #19dbbe;
  color: #333;
  line-height: 60px;
}

.el-aside {
  color: #333;
}
</style>

<script>
export default {
  data() {
    const item = {
      date: '2016-05-02',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1518 弄'
    };
    return {
      tableData: Array(20).fill(item)
    }
  }
};
</script>

插入的位置

显示的位置

界面效果