1.普通table渲染
<a-table :dataSource="dataSource" :columns="columns" bordered>
<template #bodyCell="{ column, index, record }">
<!-- <template v-if="column.key === 'num'">
{{ index + 1 }}
</template> -->
<template v-if="column.key === 'action'">
<a @click="edit"> 修改 </a>
</template>
</template>
</a-table>
2.序号+1 或者参考上方渲染
{
title: '序号',
align: 'center',
key: 'num',
customRender: ({ index }) => index + 1,
},