main.js配置

 
123456
<router-view v-sort="{Component, route}">
    <keep-alive>
        <component v-if="route.meta,keepAlive" :is="Component" :key="route.path"></component>
    </keep-alive>
    <component v-if="!route.meta,keepAlive" :is="Component" ></component>
</router-view>

router配置

 
123456789
const routes = [
    {
     path: "/",
     name: "A",
     meta: {
     keepAlive: true
     }
    }
]