So, the answer is as simple as follows.
@InterceptorRefs({
@InterceptorRef(value="defaultStack",
params={"params.excludeParams", "^action:(?!postAction$)\\w*$",
"params.acceptParamNames", "^action:(?!postAction$)\\w*$, id, name, email, number, deleteOneRow",
"validation.excludeMethods", "test"})
})
Among from these parameters, ^action:(?!postAction$)\\w*$
is a parameter of submit button, <s:submit>
that doesn't work issuing a warning, WARNING: Parameter [action:postAction] didn't match acceptParams list of patterns!
but it could be a different question.