el-upload 关键 action中写入 后台接口地址
<el-upload
v-model:file-list="fileList"
class="upload-demo"
action="https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15"
multiple
:on-preview="handlePreview"
:on-remove="handleRemove"
:before-remove="beforeRemove"
:limit="3"
:on-exceed="handleExceed"
>
<el-button type="primary">Click to upload</el-button>
<template #tip>
<div class="el-upload__tip">
jpg/png files with a size less than 500KB.
</div>
</template>
</el-upload>
