| Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Validation > url validator |
URLValidator checks that a given field is a String and a valid URL
<validators>
<!-- Plain Validator Syntax -->
<validator type="url">
<param name="fieldName">myHomePage</param>
<message>Invalid homepage url</message>
</validator>
<!-- Field Validator Syntax -->
<field name="myHomepage">
<message>Invalid homepage url</message>
</field>
</validators>