getParameter() (and its ilk) does not work when you are using a multi-part form. (I assume you are not using Servlets 3.)
Are you using a file upload package? If so, the documentation for that package should tell you how to get the non-file parameter values. If not, well you should be. File uploading and multi-part forms are too complex to go about re-inventing the wheel.
If you don't have enough time to even google using apache file upload, find the first link and read the section entitled "Processing the uploaded items", then what are you doing wasting time waiting on this forum?
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