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From "Noah White" <>
Subject Best way to handle MIME types
Date Wed, 17 Jan 2007 19:30:46 GMT
I'm looking for input on the best way to handle MIME types in Tomcat.

ServletContext.getMimeType(String fileName) returns a MIME type based on the
server (or web apps) web.xml MIME type mapping configuration. This is case
sensitive, thus using the default web.xml file that comes with Tomcat
5.5getMimeType() returns null for a file ending in '.JPG' vs.
'image/jpeg' for
a file ending in '.jpg'.  This reliance on trusting file extension for MIME
type vs. say the magic number seems problematic to me. At the very least why
not use the magic number on systems that support it and then fall back to
the mapping in the web.xml?  Additionally, I have code which converts file
extensions to lower case before sending them to getMimeType to work around
adding upper and mixed case mappings in a web.xml file. Is there a better
way to do this?



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