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Editorial Team
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Asked: 2026-05-26T01:50:25+00:00

I have just created a NetBeans project with JSF 2.0 and I have a

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I have just created a NetBeans project with JSF 2.0 and I have a problem with f:validateRequired. The bean

import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;

@ManagedBean
@RequestScoped
public class TestBean {
    private String value;

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public String action() {
        return "test";
    }
}

and the page

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">
    <h:head>
        <title>Test</title>
        <h:outputStylesheet name="css/stylesheet.css" />
    </h:head>
    <h:body>
        <h:form>
            <div id="content">
                Value:
                <h:message for="test" />
                <h:inputText value="#{testBean.value}" id="test">
                    <f:validateRequired />
                </h:inputText>
                <br/>
                <h:commandButton action="#{testBean.action}" value="Action" />
            </div>
        </h:form>
    </h:body>
</html>

seems to be allright, but the h:message isn’t there until I supply the requered=”true” attribute on the inputText. What I am missing? Why the validation does not occure whithout the requered=”true” attribute?

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1 Answer

  1. Editorial Team

    I figured the answer: fields with empty input are not validated at all by default. If you wish to validate such field you have to set required=true. See UIInput.validateValue() JavaDoc

    You can enable the validation of empty fields by setting the javax.faces.VALIDATE_EMPTY_FIELDS context parameter to true. See JavaDoc. After doing that the example above works as expected.

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