Form data validation

[Keith Hankin]

I am trying to do jsp form validation but cannot get a solution that works. The 
problem occurs because my jsp files are not in the same directory as my Servlets. If I 
have my ControllerServlet redirect the request, all of the jsp files are interpreted 
relative to the directory of the ControllerServlet, however if I forward the request, 
I lose the original request data and cannot redisplay the data that the user entered. 
Is there some way that I can avoid these two problems?