vue element-UI菜单如何动态加载本地的图片

解决方法：
:src的url必须使用require()将图片作为模块加载进去,否则路径正确，图片不显示.

代码布局:

<el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened       class="el-menu-vertical-demo" background-color="#fff" text-color="#333" active-text-color="#ffd04b">    <div class="logobox">      <img class="logoimg" src="../assets/img/logo.png" alt="">    </div>    <el-submenu v-for="menu in allmenu" :key="menu.menuid" :index="menu.con">      <template slot="title">        <i class="iconfont" :class="menu.icon"></i>        <span>{{menu.con}}</span>      </template>      <el-menu-item-group>        <el-menu-item v-for="chmenu in menu.sub_menus" :index="'/'+chmenu.link" :key="chmenu.menuid">         <img  height="15px"  class="imgswitch" :src="require('@/assets/img/menu/'+chmenu.icon)"/>          <span>{{chmenu.con}}</span>        </el-menu-item>      </el-menu-item-group>    </el-submenu>  </el-menu>