The problem of preview failure in upload component

[CenGinHong]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

2.2.7

Environment

os: windons 19042.1165, browser:Google Chrome 93.0.4577.63, Vue: 3.2.6

Reproduction link

Steps to reproduce

在upload组件中，fileList设为v-model，然后按照文档中的示例可以进行图片预览，但是有时候可能需要对上传的图片进行操作（例如裁剪）,然后在赋值进去fileList，当希望手动控制filelist（取消v-model)，并在beforeUpload获取图片文件进行裁剪后再手动赋进fileList时预览图片失败了。（在提供的reproduction中仅仅是在beforeUpload中进行fileList的赋值貌似就已经不能预览了）

What is expected?

有无方法解决上述的手动控制flieList预览问题

What is actually happening?

手动控制fileList时图片预览失败

[tangjinzhou]

参考这个示例 https://2x.antdv.com/components/upload-cn/#components-upload-demo-transform-file

beforeUpload 的意思是上传之前的回调，此时还没有文件，复制给 fileList 的是一个没有文件的 file

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.