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Asked: 2026-06-13T04:02:42+00:00

My following code is not working as per expectation. The validation does not work

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My following code is not working as per expectation. The validation does not work as expected.

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich"
    xmlns:f="http://java.sun.com/jsf/core">

<h:head>
    <title>My Registration Page</title>
    <link href="stylesheet/reset.css" rel="stylesheet" type="text/css" />
    <link href="stylesheet/style.css" rel="stylesheet" type="text/css" />
    <link rel="icon" type="image/png" href="images/icons/favicon.png" />
    <script src="script/script.js" />
</h:head>
<h:body>
    <h:outputText id="progress_bar" styleClass="progress-bar" /> 
    <a4j:jsFunction name="login" action="#{loginBean.validateUser}" />


    <div id="login-container">
        <div class="login-logo">
            <img src="images/logo.png" />
        </div>
        <f:view>
            <div id="loin-form">
                <h1>
                    Log in to your account or <a href="#">sign up</a> to Get Started
                </h1>
                <h:form>
                    <h:inputText id="userName" value="#{loginBean.userName}"
                        label="User Name" required="true" class="txtFld">
                        <f:validator
                            validatorId="com.coinfling.validation.LoginBeanValidator" />
                    </h:inputText>
                    <h:message for="userName" style="color:red"></h:message>
                    <h:inputSecret id="passWord" value="#{loginBean.passWord}"
                        label="Password" required="true" class="pswrdFld">
                        <f:validator
                            validatorId="com.coinfling.validation.LoginBeanValidator" />
                    </h:inputSecret>
                    <h:message for="passWord" style="color:red"></h:message>
                    <p>
                        <a4j:commandLink id="forgotPasswordLink" lable="Password"
                            value="Forgot Your Password? " />
                        <a4j:commandButton id="loginButton" value="Sign In"
                            onclick="login();" styleClass="sign-btn" />
                    </p>
                </h:form>
            </div>


        </f:view>
    </div>

</h:body>
</html>

My simple validation class code is below
package com.coinfling.validation;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.FacesValidator;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
@FacesValidator("com.coinfling.validation.LoginBeanValidator")
public class LoginBeanValidator implements Validator {

    @Override
    public void validate(FacesContext context, UIComponent toValidate,
            Object value) throws ValidatorException {
        FacesMessage message = new FacesMessage("*UserName is not in Correct Format");
        throw new ValidatorException(message);

//      
//      if(toValidate.getId().equals("userName"))
//      {
//          FacesMessage message = new FacesMessage("*UserName is not in Correct Format");
//          throw new ValidatorException(message);
//      }
//      else if(toValidate.getId().equals("passWord"))
//      {
//          FacesMessage message = new FacesMessage("*Password is not in Correct Format");
//          throw new ValidatorException(message);
//      }
    }

}

As you can see my validation i am just thrown an exception for whatever gets input. The required field is also not working. No error message is printed. What am i doing wrong ?

Kind Regards

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1 Answer

  1. Editorial Team

    You’re not actually submitting the form. You’re basically invoking a standalone bean method separately. That’s a huge difference. To execute validation on the form, you have to submit the form.

    Replace the wrong a4j:jsFunction approach:

    <a4j:jsFunction name="login" action="#{loginBean.validateUser}" />
...
<a4j:commandButton id="loginButton" value="Sign In"
   onclick="login();" styleClass="sign-btn" />

    by the normal form submit approach:

    <a4j:commandButton id="loginButton" value="Sign In"
   action="#{loginBean.validateUser}" styleClass="sign-btn" />

    I’m not sure why you used a4j:jsFunction, but whatever you thought to benefit from the a4j:jsFunction, has definitely to be solved in a different way.

    Don’t forget to add a render="@form" to update the form on complete of the ajax request, so that all messages are been shown:

    <a4j:commandButton id="loginButton" value="Sign In"
   action="#{loginBean.validateUser}" render="@form" styleClass="sign-btn" />
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