Follow these steps if you are using Struts
1. Add saveToken(request) in the execute() method of the Action when the page needs to displayed first or initialized.
2. Add the following code in the execute() method of Action handling the processing of the page on Submit
if (isTokenValid(request)) {
////// Do the processing for the request and add messages if required
resetToken(request); /// Reset the token so that on resubmit it does not come in this block
return mapping.findForward("success");
} else {
///// The page is submitted again so take app. action if required
return mapping.findForward("failure");
}
