JSF validator problem

[Gina vernon]

Hi,
I am trying to practice implementing the validator interface to validate an inputSecret UIcomponent. And I can't get it to work.

Here is my class that implements the validator:

  
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
import javax.faces.application.FacesMessage;
public class validatePassword implements Validator {
	
	public void validate(FacesContext arg0, UIComponent arg1, Object arg2) throws ValidatorException {
		int x =5;
		String passw = (String)arg2;
		if (passw.length() < x){
			FacesMessage message = new FacesMessage();
			message.setSummary("Password must be longer than 5 characters");
			throw new ValidatorException(message);
		}

		
	}
	

}
  

This is the class with the setter&getter methods for the password:

  public class LoginBean {
	
	String name;
	String password;
	
	public LoginBean() {
		super();
	}
	
	public String getName(){
		return name;
	}
	
	public void setName (String name){
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	
	public void setPassword(String password){
		this.password = password;
	}
		

}
 

the related JSF code:

 <h:inputSecret value = "#{loginBean.password}" required ="true">
				<f:validator validatorId="VP" />
				</h:inputSecret>
 

and faces.cofig:

[quote]<?xml version="1.0" encoding="UTF-8"?>

<faces-config
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
    version="1.2">
	<managed-bean>
		<managed-bean-name>loginBean</managed-bean-name>
		<managed-bean-class>com.tutorial.LoginBean</managed-bean-class>
		<managed-bean-scope>session</managed-bean-scope>
	</managed-bean>
	<managed-bean>
		<managed-bean-name>regex</managed-bean-name>
		<managed-bean-class>com.tutorial.Regex</managed-bean-class>
		<managed-bean-scope>session</managed-bean-scope>
	</managed-bean>
	<navigation-rule>
		<display-name>/JSP/login</display-name>
		<from-view-id>/JSP/login.jsp</from-view-id>
		<navigation-case>
			<from-outcome>login</from-outcome>
			<to-view-id>/JSP/welcome.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>
	<validator>
		<display-name>Validate Password</display-name>
		<validator-id>VP</validator-id>
		<validator-class>com.tutorial.validatePassword</validator-class>
	</validator>

</faces-config>
    [/quote]

On a related note, i have read a lot of articles that call the validating class a 'backing bean'. How is it different from a 'managed bean'. And why is it called a bean when it doesn't have any set/get methods?

Thanks.

[Bauke Scholtz]

Gina vernon wrote:Hi,
And I can't get it to work.

Elaborate the problem in detail. What happens? What happens not?

On a related note, i have read a lot of articles that call the validating class a 'backing bean'. How is it different from a 'managed bean'. And why is it called a bean when it doesn't have any set/get methods?

The validator class is not a backing bean class. Either the article is wrong or you misinterpreted the article.

To the point, a backing bean is a java class which can be managed by JSF as managed bean. A managed bean is a backing bean instance which is been managed by JSF.

[Gina vernon]

Bauke Scholtz wrote:
Elaborate the problem in detail. What happens? What happens not?

My validator implementation does not validate my password when the length of the password is less than 5. It goes through to a welcome page. I expect it to print the error message I specified in the implementation class.
Thanks.

[Bauke Scholtz]

Please analyze the problem at developer's level, not at user's level. The situation at the user's level is clear enough for us, developers.

Do the validator method for instane get executed? Does the string reference 'passw' contain the expected value? Are all the JSF phases executed? Etcetera. Debug your code and see what happens and what not. What lines got executed according expectations and what not. That kind of things.

[Gina vernon]

I found the solution! There is nothing wrong with the code as it turns out, so its not a developer level issue. Its more a page designer issue. I needed to put this tag in to the JSP:

<h:messages style="color:darkred"/>

.

[Bauke Scholtz]

So your validator actually does validate the input and does add the message, but the message doesn't show up.

Glad you solved it yourself.