<template>
  <el-container class="el-container">
    <el-aside width="200px" class="el-aside-container">
      <el-menu
        @select="handleSelect"
        active-text-color="#367fff"
        class="el-menu-container"
        text-color="#fff"
        :unique-opened="true"
        background-color="#545c64"
        :router="true"
      >
        <el-submenu index="1">
          <template slot="title"
            ><i class="el-icon-message"></i>导航一</template
          >
          <el-menu-item-group>
            <template slot="title">分组一</template>
            <el-menu-item index="/about">关于</el-menu-item>
            <el-menu-item index="/detail">详细</el-menu-item>
          </el-menu-item-group>
          <el-menu-item-group title="分组2">
            <el-menu-item index="/music">音乐</el-menu-item>
          </el-menu-item-group>
          <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项4-1</el-menu-item>
          </el-submenu>
        </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 class="header-container" style="height:40px">
        <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>
        <el-breadcrumb separator="/">
          <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item :to="{ path: '/about' }">关于</el-breadcrumb-item>
          <el-breadcrumb-item :to="{ path: '/detail' }"
            >详情</el-breadcrumb-item
          >
          <el-breadcrumb-item :to="{ path: '/music' }">音乐</el-breadcrumb-item>
        </el-breadcrumb>
        <transition name="fade">
          <router-view></router-view>
        </transition>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  methods: {
    handleSelect(key, keyPath) {
      console.log(key, keyPath);
    },
  },
};
</script>
// 这里 1.注意.html文件需要设置 html,body{height:100%}
<style lang="less" scoped>
.el-container {
  height: 100%;
  .el-aside-container {
    height: 100%;
    .el-menu-container {
      height: 100%;
    }
  }
  .header-container {
    text-align: right;
    font-size: 12px;
    background-color: #545c64;
  }
}
</style>