I know this is an old thread, but I came across the same issue today, I 
ended up with something like:

(POST "/upload" request
        (multipart/wrap-multipart-params
          (fn [{{file "file"} :params}]
            (handle-updload file))))

Sebastián

On Friday, April 4, 2014 at 2:39:23 AM UTC-3, K Livingston wrote:
>
> I'm trying to dynamically handle the InputStream in file uploads 
> (ring/compojure app via servlet/jetty).  I started with two different 
> versions of the wrap-multipart-params, one is basically a NoOp that just 
> returns the file name, and the other echoes the file back.  They both work 
> fine independently but when I try to bring them both online together, which 
> ever store is defined first is the one I see called regardless of handler.
>
> Can I only have one copy of wrap-multipart-params in the whole app?
>
> How can I change how the InputStream is handled depending on the handler?
>
> Do I need to just have the handler return the IO stream and then change 
> the behavior in each handler function?
>
> example:
> The logging store is called even with POST to /upload-echo.  The echo 
> store is never called.
>
> (defroutes file-list-routes
>   (GET "/list-content"  request (file-list/show-file-list request))
>
>   (GET "/upload-logging" request 
>        (upload/simple-upload-file "upload-logging" request))
>   (mp/wrap-multipart-params 
>    (POST "/upload-logging" request (upload/upload-logging-file request))
>    {:store upload/logging-store})
>
>   (GET "/upload-echo" request 
>        (upload/simple-upload-file "upload-echo" request))
>   (mp/wrap-multipart-params 
>    (POST "/upload-echo" request (upload/upload-echo-file request))
>    {:store upload/echo-store})
>
>   );end route list
>
> These routes are then nested into some other context calls and of course 
> other middleware, until eventually making it up to the servlet.  There are 
> no other calls to wrap-multipart-params in my application.
>
> Thanks for your help,
> Kevin
>

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