Validator for NOT NULL/ blanks

[Surendra Kumar]

Hi,

I am trying to validate a form input field. my requirment is not allowing spaces in the input value. I am not able to work it out. Even if it's a required field, if just blank spaces are typed in, and submit, it's submitting. I am using struts validator (validation.xml).
Can you please help?

 
<form name="/userId">
    <field property="userID" depends="mask,minlength,maxlength" page="3">
    <arg0 key="userId"/>
            <var>
            <var-name>mask</var-name>
                <var-value>^[a-zA-Z0-9_.@]*$</var-value>
</var>
<arg1 name="minlength" key="${var:minlength}" resource="false"/>
            <arg1 name="maxlength" key="${var:maxlength}" resource="false"/>
            <var>
               <var-name>minlength</var-name>
               <var-value>5</var-value>
            </var>
            <var>
               <var-name>maxlength</var-name>
               <var-value>64</var-value>
            </var>   
</field>
   </form>