Mime-types are specified in Tomcat's conf/web.xml file. It's look like this:
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
Previously I try following:
<mime-mapping>
<extension>*</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
but it doesn't help me. How to specify default mime-type for any file extension?