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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?
722
asked Jan 01 '26 00:01
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.
63
answered Jan 02 '26 13:01
I know this post is kind of old, but I'm using MyFaces and apparently javax.faces.VALIDATE_EMPTY_FIELDS is set to false by default.
26
answered Jan 02 '26 13:01
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