Java File upload with utf-8 chracters in name

Question

My upload code via Java Api works fine, but when file name contains characters like german umlaut and trying to post file with that name, in jira shows like ???

Tried to upload file with PostMan and file name was correct. copied missing header values from it but no luck.
Does anyone had same problem with Java, Spring?

Thanks

unknown · Answer

So, when you tried pre-converting all the UTF-8 chars into ASCII before using that in the Post request, did it also fail?

The other possibility I can think of is that you're not defining the charset type properly in the Post request header. If you have a "-Encoding ASCII" or similar defined in the header, but are supplying UTF-8 encoded strings in the request, then that would explain why the request is being mis-interpreted.

CMC Consulting · Answer

name contains UTF-8 characters and like "test-äöü" and after upload on jira it looks like "test-???"

Tried but no luck. using spring boot 1.5 version. RestTemplate to make post.

for test reason updated boot to 2.0 and problem was fixed but unfortunately solution can't be version update.
there is also stackoverflow where i wrote details:
https://stackoverflow.com/questions/64086062/how-to-upload-file-with-utf-8-symbols-in-name-on-jira-task-as-attachment-using-s

unknown · Answer

Are saying the name contains UTF-8 characters, like "test-äöü" or the UTF-8 characters in the name have been converted to their ASCII equivalent, like "test-%C3%A4%C3%B6%C3%BC"?

Have you tried converting all UTF-8 in the name to ASCII before submitting it?