jsp-servet mvc model problem

[peter chan]

for mvc model , it uses Dispatcher to redirect to the distintation path ,
if you refresh the distintation page ,the last action will do once again
(for example to save or update)

To use Dispatcher ,all the business logn including data can get in the
model view and use setParameter to
flow the data to the view model.

Do any body have this pronblem ,and how to solve?

thanks