问题
We can extract the mimetype from byte array, e.g., by using Apache Tika.
Is it possible to get Filename from Byte Array.
回答1:
No. You can take a guess at a mimetype from the content data itself, but the filename is not in there.
回答2:
The header field that you may be looking for is called Content-Disposition. If you're downloading an attachment, then there may be a file name in that field:
Content-Disposition: attachment;filename=abc.txt
But there's no guarantee that you'll have such a file name available. Also, this may only apply to HTTP and E-Mail content. From your question, it's not clear where your data's origin is...
来源：https://stackoverflow.com/questions/9884908/get-filename-from-byte-array