This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Is there any way to validate information across two fields in Struts2? For example, lets say I want to enforce the rule fieldX must be less than fieldY. Is there any way to add an XML rule that says this?
You *can* do pretty much anything with the expression validator, although anything more complicated than simple comparisons etc. may be better off inside a validate() method. Note that manual and XML- or annotation-based validation can work in concert w/ a call to super.validate().