router-link有个exact-active-class，可以设置当前标签被激活的样式
<div class="flex-column left-item-box">
<router-link to="/" exact-active-class="active" class="link-view">Home</router-link>
<router-link to="/about" exact-active-class="active" class="link-view">About</router-link>
<router-link to="/goods" exact-active-class="active" class="link-view">goods</router-link>
<router-link to="/manage" exact-active-class="active" class="link-view">Manage</router-link>
</div>
微信截图_20220729155148.png
