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  • spring form validation help

    I have a jsp page that contains a spring form:form, a form:checkboxes that displays a group of options, and a form:checkbox that is a single option(which is the "none of the above" option). The logic is that at least one of the options in the form:checkboxes group be checked or the single checkbox option (none of the above) is checked and no other.

    I am having a hard time with validating this logic without using some kludgy JavaScript function that gets triggered by an onChange function that counts the checkboxes.

    Does anyone have a simpler suggestion or can point me to an example.