Reading parameters from a multipart request in a custom tag

[Paul McCulloch <pa...@axiossystems.com>]

I'm trying to access the request parameters (i.e. submitted form values) in
a custom tag. This is fine with 'normal' forms but with multipart forms
(enctype="multipart/form-data") this isn't working.

The code in the custom tag does, in essence, what the RequestProcessor does
- calls org.apache.commons.fileupload.FileUpload.parseRequest().

I believe that the problem is that it is not possible to read the request's
input stream more than once. The RequestProcessor reads the request's input
stream (and puts the parameters in the wrapped request object), so it
appears to not be available for me to read in the custom tag. The Struts
wrapped request is not available (AFAIK) to me in my custom tag.

I was wondering if anyone could confirm my analysis and/or suggest a
solution. 

The workaround I am currently using is to put the request parameters in a
request scoped attribute, in my Action. However this approach couples
together my Struts application with the open source custom tag - not a real
solution.

TIA,

Paul

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