MIME Type Mismatch - JBoss AS 7.0

[esang]

It appears that for some reason my server is specifying the wrong content-type for scripts and stylesheets. An example of a HTML script tag I use would be:

<script type="text/javascript" src="script.js"></script>

Chrome will return the following warnings:

• Resource interpreted as Stylesheet but transferred with MIME type text/plain.
• Resource interpreted as Script but transferred with MIME type text/plain.

After doing some research it seemed that all I needed to do was add a "mime-mapping" to my web.xml, but this failed to resolve the issue. I tried adding:

<mime-mapping>

          <extension>css</extension>

          <mime-type>text/css</mime-type>

</mime-mapping>

<mime-mapping>

          <extension>js</extension>

          <mime-type>application/x-javascript</mime-type>

</mime-mapping>

This is especially concerning because IE9 in standards mode will exclude the stylesheet (SEC7133: CSS was ignored due to mime type mismatch).

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Have other people been experiencing the same issue and has anyone discovered a solution? Thank you.

[dotun.kolaolaleye]

I know this is old, but someone might come looking just like I did... before I discovered the reason.

Apparently, protection offered by the <security-contstraint> tag of web.xml causes everything that matches the pattern specified in the <url-pattern> to be served as text/html from the server. So, if scripts and css are served from a url that matches the pattern, they'll be sent as text/html.

Try placing resources such as those outside the url pattern and that should solve the problem.