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Jersey ResponseBuilder file name encoding

In javax.ws.rs.core.Response.ResponseBuilder, when I set the filename, with Polish (German, French, etc.) national characters, it changes the filename before sending a response to the client:

ResponseBuilder response = Response.ok(file);
response.header("Content-Disposition", "attachment; filename=żółty.txt");

The file is then downloaded as "-óBty.txt". How to fix it?

EDIT: The whole application works correctly with UTF-8 (e.g. json content contains polish character). Only http headers don't work.

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Ok I found a solution. According to RFC 6266 , you should not use non-ASCII characters in the header, but use URL encoded values ​​instead. There is a special grammar for this case:



String encodedFileName = URLEncoder.encode(file.getName(), "UTF-8");
response.header("Content-Disposition", "attachment; filename*=UTF-8''" + encodedFileName);
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It seems that the server side encoding does not support the full character set in the case of the Polish language. You can change character encoding to support polish character in your web.xml.



Try it. See if it works.

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