Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Validation > date validator |
Field Validator that checks if the date supplied is within a specific range.
NOTE: If no date converter is specified, XWorkBasicConverter will kick
in to do the date conversion, which by default using the Date.SHORT
format using
the a problematically specified locale else falling back to the system
default locale.
You can either use the min / max value or minExpression / maxExpression (when parse is set to true) - using expression can be slightly slower, see the example below.
![]() | Warning Do not use ${minExpression} and ${maxExpression} as an expression as this will turn into infinitive loop! |
<validators> <!-- Plain Validator syntax --> <validator type="date"> <param name="fieldName">birthday</param> <param name="min">01/01/1990</param> <param name="max">01/01/2000</param> <message>Birthday must be within ${min} and ${max}</message> </validator> <!-- Field Validator Syntax --> <field name="birthday"> <field-validator type="date"> <param name="min">01/01/1990</param> <param name="max">01/01/2000</param> <message>Birthday must be within ${min} and ${max}</message> </field> </field> <!-- Field Validator Syntax with expression --> <field name="birthday"> <field-validator type="date"> <param name="minExpression">${minValue}</param> <!-- will be evaluated as: Date getMinValue() --> <param name="maxExpression">${maxValue}</param> <!-- will be evaluated as: Date getMaxValue() --> <message>Age needs to be between ${min} and ${max}</message> </field-validator> </field> </validators>