Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Annotations > ExpressionValidator Annotation
Added by Rainer Hermanns, last edited by Don Brown on Nov 14, 2006  (view change)

ExpressionValidator Annotation

This non-field level validator validates a supplied regular expression.


The annotation must be applied at method level.


Parameter Required Default Notes
message yes   field error message
key no   i18n key from language specific properties file.
shortCircuit no false If this validator should be used as shortCircuit.
expression yes   An OGNL expression that returns a boolean value.


@ExpressionValidator(message = "Default message", key = "i18n.key", shortCircuit = true, expression = "an OGNL expression" )