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Editorial Team
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Asked: 2026-05-12T13:56:17+00:00

My users are going to be uploading files with a .EXP extension. In ColdFusion

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My users are going to be uploading files with a .EXP extension. In ColdFusion on Windows 2003 I’m using getPageContext().getServletContext().getMimeType() to make sure that the file that they upload is of the correct mime-type, which will be text/plain. The issue I’m having is that no matter where I register the mime-type on the server, getPageContext().getServletContext().getMimeType() will return blank since it doesn’t know about the .EXP file extension. What is the trick to get ColdFusion to see this file extension.

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1 Answer

  1. Editorial Team

    FINALLY!!!!

    In order for getPageContext().getServletContext().getMimeType() to recognize the new filetype, you must edit the file:

    <ColdFusion-home>\runtime\lib\mime.types

    In my case this file was located at:

    C:\ColdFusion8\runtime\lib\mime.type

    I opened file file and found this line:

    text/plain asc txt

    All I had to do was add my extension to the end like so:

    text/plain asc txt exp

    Then I restart the ColdFusion service and invoking getPageContext().getServletContext().getMimeType() return text/plain.

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