validation - JSF custom validator not invoked when submitted input value is null -

i created custom validator not getting called when input null.

my validator code:

@facesvalidator("requiredvalidator") public class requredvalidation implements validator {      public void validate(facescontext context, uicomponent component,             object value) throws validatorexception {         system.out.println("in valid gggggggg");      } 

my xhtml page code:

<p:message for="urlinput"  />  <p:inputtext id="urlinputv" value="#{coveragebean.firstname}" label="url" maxlength="2" >     <f:validator validatorid="requiredvalidator"></f:validator> </p:inputtext> <p:message for="urlinputv"  /> <p:commandbutton value="submit" action="#{loginbean.validatetext}" /> 

now working when entering value in text box, not working when inputtext null.

the server using

• tomcat
• primefaces 3.5
• jsf2.0

please tell problem is?

by default, jsf not validate empty submitted value if bean validation (jsr303) not available in environment. behavior can controlled context parameter javax.faces.validate_empty_fields.

the default value javax.faces.validate_empty_fields auto, meaning empty fields validated if bean validation (jsr303) available in class path.

if want validate empty fields anyway without bean validation, explicitly set context parameter in web.xml true this:

<context-param>     <param-name>javax.faces.validate_empty_fields</param-name>     <param-value>true</param-value> </context-param> 

it must said use required="true" in case want validate input field required. don't need perform job in custom validator then.

<p:inputtext ... required="true" requiredmessage="please enter value" /> 

or, more abstract <f:validaterequired>:

<p:inputtext ... requiredmessage="please enter value">     <f:validaterequired /> </p:inputtext> 

do note can safely use multiple validators on same input component.