struts and card processing

[Phillip Qin <pq...@shareowner.com>]

Our Visa/MasterCard processing provider requires merchants either POSTs or 
redirects order data to their URL. What I do is 

- After client clicks "Submit" button on my order entry page, a struts 
Action class is executed to do some pre-processing (validate credit card 
number, expiration date etc.) 
- This action class then calls response.sendRedirect(encodedUrl) to send 
data to the url (a GET). 

The problem that I have is, after appended all the parameters, this url 
is longer than 254 characters. Once the action class calls 
response.sendRedirect, I got a "resource not available" error. 
I don't want to create another jsp page to let client click "Submit" to 
POST the preprocessed data to the url. Is there any alternatives? Maybe 
a Servlet filter? 

Another question is I tried to put a wait page during the credit card 
processing. On this jsp page, I display "please wait while we are 
processing your order......" and <logic:redirect 
url="post.do"/>. But this redirect never 
redirects to any action or page. Does any one have any idea? I don't ant 
to use JavaScript.