This week's giveaway is in the Java/Jakarta EE forum. We're giving away four copies of Java EE 8 High Performance and have Romain Manni-Bucau on-line! See servlet that processes it. For that I use a hidden field with the id form in which I set which servlet use.
If I use Tomcat 7 I have no problems. The trouble is that I have to use Tomcat 6 and here I fail to make it work.
I tested with 2 libraries. Apache fileupload and other downloaded from O'Reilly, both in the controller I can get the parameter form and find out which servlet redirect, but I can not process the form in the servlet again, it is as if the controller removed the parameters.