I'm curious as to what kind of patterns people are using for data validation
in JSPs? I assume most would have beans to the validation... say you are
taking credit card information for an order (CC #, CC Expiration date,
billing address, email). Would you have the bean throw an expection to the
JSP and have the JSP print an error msg? Or would have have validation bean
that would generate the error msg? Can someone point me to some
examples/patterns? Is it better to put the error msgs in the JSP or in the
beans. I can argue both ways...better to put in bean because it is
centralized so if you have more than one way to change properties of a bean
the same error msg is displayed....or better to put in JSP because the HTML
coders can easily change the msgs and have full control over them.
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