JSF - f:validateLongRange
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f:validateLongRange tag is used to validate long value in a particular range.
JSF Tag
<f:validateLongRange minimum="5" maximum="200" />
Tag Attributes
| S.N. | Attribute & Description |
|---|---|
| 1 | minimum minimum long value within an optional range |
| 2 | maximum maximum long value within an optional range |
Example Application
Let us create a test JSF application to test the above tag.
| Step | Description |
|---|---|
| 1 | Create a project with a name helloworld under a package com.tutorialspoint.test as explained in the JSF - First Application chapter. |
| 2 | Modify home.xhtml as explained below. Keep rest of the files unchanged. |
| 3 | Create result.xhtml in the webapps directory as explained below. |
| 4 | Create UserData.java as a managed bean under package com.tutorialspoint.test as explained below. |
| 5 | Compile and run the application to make sure business logic is working as per the requirements. |
| 6 | Finally, build the application in the form of war file and deploy it in Apache Tomcat Webserver. |
| 7 | Launch your web application using appropriate URL as explained below in the last step. |
UserData.java
package com.tutorialspoint.test;
import java.io.Serializable;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
@ManagedBean(name = "userData", eager = true)
@SessionScoped
public class UserData implements Serializable {
private static final long serialVersionUID = 1L;
private int age;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
home.xhtml
<?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:head>
<title>JSF tutorial</title>
</h:head>
<h:body>
<h2>h:validateLongRange Example</h2>
<h:form>
<h:inputText id="ageInput" value="#{userData.age}"
label="age" >
<f:validateLongRange minimum="5" maximum="200" />
</h:inputText>
<h:commandButton value="submit" action="result"/>
<h:message for="ageInput" style="color:red" />
</h:form>
</h:body>
</html>
result.xhtml
<?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:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>JSF Tutorial!</title>
</h:head>
<h:body>
<h2>Result</h2>
Age: #{userData.age}
</h:body>
</html>
Once you are ready with all the changes done, let us compile and run the application as we did in JSF - First Application chapter. If everything is fine with your application, this will produce following result:
Enter an invalid value
Enter a valid value
