実数値の範囲チェックを行います。
記述例を、以下に示します。
<!-- Plain Validator Syntax -->
<validators>
<validator type="double">
<param name="fieldName">percentage</param>
<param name="minInclusive">20.1</param>
<param name="maxInclusive">50.1</param>
<message>Age needs to be between ${minInclusive} andaxInclusive} (inclusive)</message>
</validator>
</validators>
<!-- Field Validator Syntax -->
<validators>
<field name="percentage">
<field-validator type="double">
<param name="minExclusive">0.123</param>
<param name="maxExclusive">99.98</param>
<message>Percentage needs to be between ${minExclusive} ${maxExclusive} (exclusive)</message>
</field-validator>
</field>
</validators>