Is there Any Content Type Issue That Occurs between?

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Is there any content type issue that occurs between .pdf and .PDF? The actual file format is like 12345.PDF. response.setContentType ("application/pdf"); I am able to download .pdf but not .PDF.

Is it a 0KB or in fact a 0 byte file? If it is a 0 byte file then it isn’t a valid PDF and there is nothing to see here anyway so it makes no different (and No.) If it is some small number of bytes showing to you as 0KB then the question becomes is it a VALID PDF file. If so you should be able to open it with most every PDF reader/editor. Try looking at it with a decent text editor like Notepad++ or a Hex editor find out what if anything is in there.

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I'd also like to point out to all those who have told me the same thing I did about these files not being valid PDFs that it makes sense to me as far as a PDF file for what it is. To me, you're basically telling me that you want the file to be something that is not valid and if it isn’t valid then it isn't a valid PDF. It may be a 0 byte file but at the end of the day it just has to be considered as a piece of metadata. I am not sure what is a 0 byte file and what isn’t in it, but again this is not a PDF but a metadata. It's not a real PDF file it's just a simple metadata. I just can not understand why people who claim to take an interest in PDF files seem to dismiss every single.