Thanks Leonardo for your reply. I have the most actual version of commons-fileupload. My upload works fine but it broke existing xlsx downloads across my whole application. I find solution which handles download through registered filter on some url (solution you suggested). This way is not convenient for my purpose because I perform export and download on many views and many beans and I needs beans data for export xlsx (I don't download stored files, I export them, send them as response and delete them), also I would lose messages management.
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