JSF 2 validateLongRange example

“f:validateLongRange” is a JSF range validator tag, which is used to check the range of a numeric value. For example,

<h:inputText id="age" value="#{user.age}">
	<f:validateLongRange minimum="1" maximum="150" />
</h:inputText>

When this form is submitted, the validator will make sure the “age” value is within the range from 1 to 150.

“f:validateLongRange” example

A JSF 2.0 example to show the use of “f:validateLongRange” tag to validate the range of a “age” input field, when the validator failed, display the error message via “h:message” tag.

1. Managed Bean

An user managed bean, with a “age” property.

package com.mkyong;
 
import java.io.Serializable;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
 
@ManagedBean(name="user")
@SessionScoped
public class UserBean implements Serializable{
 
	int age;
 
	public int getAge() {
		return age;
	}
 
	public void setAge(int age) {
		this.age = age;
	}
 
}

2. JSF Page

JSF XHTML page, show the use of “f:validateLongRange” tag to make sure the “age” input value is within the range from 1 to 150.

<?xml version="1.0" encoding="UTF-8"?>
<!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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      >
    <h:body>
 
    	<h1>JSF 2 validateLongRange example</h1>
 
	<h:form>
 
		<h:panelGrid columns="3">
 
			Enter your age : 
 
			<h:inputText id="age" value="#{user.age}" 
				size="10" required="true"
				label="Age" >
			        <f:validateLongRange maximum="150" minimum="1" />
			</h:inputText>
 
			<h:message for="age" style="color:red" />
 
		</h:panelGrid>
 
		<h:commandButton value="Submit" action="result" />
 
	</h:form>
 
    </h:body>
</html>