Refer to this example https://2x.antdv.com/components/upload-cn/#components-upload-demo-transform-file

[CenGinHong]

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

Originally posted by @tangjinzhou in #4651 (comment)

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Hello @ChenChienhang, your issue has been closed because it does not conform to our issue requirements. Please use the Issue Helper to create an issue, thank you!

你好 @ChenChienhang，为了能够进行高效沟通，我们对 issue 有一定的格式要求，你的 issue 因为不符合要求而被自动关闭。你可以通过 issue 助手 来创建 issue 以方便我们定位错误。谢谢配合！

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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.