AjaxBehaviorEvent in JSF 2.2 with primefaces 3.5

Ajax event is very useful for asynchronous action JSF page,

• Here we are going to see about AjaxBehaviorEvent , which is used to invoke the values from Bean class when the ajax xction begin

• In following method we just invoked the AjaxAction for <p:inputtext > when the values are entered in textbox ajax blur action  begins.

The code for JSF is plotted below

Step 1 :

Create JSF Code in xhtml page


 <p:panel id="panel" header="Login Panel" style="margin:0 auto;width:350px;margin-top:15%;">            <p:panelGrid columns="3"  id="pgrid1" styleClass="theme"  > 
            <h:outputLabel  value="User Name:" /> 
            <p:inputText id="name" value="#{loginBean.name}"  required="true" >
            <f:ajax event="blur" render="label" listener="#{loginBean.ajaxEvent}" />
            </p:inputText> 
            <p:message for="name"  style="color: red;" />
            <p:outputLabel value="User Id:" /> 
            <p:inputText id="id" value="#{loginBean.id}"  required="true" /> 
            <p:message for="id" style="color: red;" />
        </p:panelGrid>
        <p:commandButton type="Submit" value="Submit" action="#{loginBean.validate}" update="pgrid1">
        </p:commandButton>
    </p:panel> 


Bean class Code is

    public void ajaxEvent(AjaxBehaviorEvent e)
    {
        System.out.println("Ajax Value----->"+getName());
   }

• Here ajaxEvent is an user defined event 

• After ajax is called from JSF page the bean class `ajaxEvent` method is invoiked as i mentioned above in code.
• The System.out will print the inputText value where we entered JSF page