, the provider was not found. The program may not be installed correctly. Question: Today, while using NetEase Cloud Disk, I noticed that when attaching files for upload, the size of the attachment was displayed immediately. Hibernate Dialect must be explicitly set. I wonder what technology is used to achieve this? As shown in the figure below: it displays the file size and the percentage of the upload progress. Note: I am using Firefox.
Problem Supplement: Oh, thank you, I've never paid attention to the message headers before...
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The upload message header contains...
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Hehe, I’ve done this before.
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You can refer to: How to implement a feature similar to NetEase Mail's attachment upload function?
http://www.myexception.cn/asp-dotnet/96691.html
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(Note: The original Chinese text seems to combine multiple unrelated technical queries into one block. The translation reflects this structure.)