Step1:
First create dynamic web project in Eclipse, add jar files of Mojarra or Apache myfaces.. (ur choice)..
Step2:
Add new package in src folder:
Package: com.test
Now create new class:
Name: EmailValidator.java
Step3:
Now add this code in
EmailValidator Class:
Code it:
import
java.util.regex.Matcher;
import
java.util.regex.Pattern;
import
javax.faces.application.FacesMessage;
import
javax.faces.component.UIComponent;
import
javax.faces.context.FacesContext;
import
javax.faces.validator.FacesValidator;
import
javax.faces.validator.Validator;
import
javax.faces.validator.ValidatorException;
@FacesValidator("emailValidator")
public class EmailValidator implements Validator{
private static final String
EMAIL_PATTERN =
"^[_A-Za-z0-9-]+(\\."
+"[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*" + "(\\.[A-Za-z]{2,})$";
private Pattern pattern;
private
Matcher matcher;
public EmailValidator(){
pattern = Pattern.compile(EMAIL_PATTERN);
}
@Override
public void validate(FacesContext context,
UIComponent component,
Object
value) throws ValidatorException
{
matcher =
pattern.matcher(value.toString());
if(!matcher.matches()){
FacesMessage
msg =
new FacesMessage("E-mail
validation failed.",
"Invalid
E-mail format.");
msg.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ValidatorException(msg);
}
}
}
Step 4:
Now Create EmailBean.java Class:
Name: EmailBean.java
Code it:
import
javax.faces.bean.ManagedBean;
import
javax.faces.bean.SessionScoped;
@ManagedBean(name="test")
@SessionScoped
public class EmailBean {
private String email;
public void setEmail(String email) {
this.email
= email;
}
public String
getEmail() {
return email;
}
}
Step 5:
Now test custom validator, create .xhtml page:
Name: test.xhtml
Code it:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1" />
<title>Insert title here</title>
</head>
<body>
<h:form>
<h1>Hello .. It is testing Page</h1>
<br/>
<h:panelGrid>
Type Email:<h:inputText id="email"
value="#{test.email}" size="20" required="true"
label="Email Address">
<f:validator validatorId="emailValidator"/>
</h:inputText>
<h:message for="email"
style="color:red" />
</h:panelGrid>
<h:commandButton value="Submit" action="emailtest"
/>
</h:form>
</body>
</html>
Step 6:
Now create emailtest.xhtml page for getting result:
Code it:
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1" />
<title>Insert title here</title>
</head>
<body>
<h:panelGrid
columns="2">
Email
Address :
<h:outputText value="#{test.email}"
/>
</h:panelGrid>
</body>
</html>
Now Use this tutorial and enjoy your own validator..! J
