JSF Tutorial - JSF Role Example








The following code shows how to check user role in JSF application.

Example

The following code is from demo.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"
      >
      
   <f:event listener="#{user.isAdmin}" type="preRenderView" />
          
  <h:body>
   
      <h1>JSF 2 protected page example</h1>
  
  </h:body>

</html>

The following code is from UserBean.java.

package com.java2s.common;

 
import javax.faces.application.ConfigurableNavigationHandler;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import javax.faces.event.ComponentSystemEvent;
 
@ManagedBean(name="user")
@SessionScoped
public class UserBean{
 
  public void isAdmin(ComponentSystemEvent event){
        
    FacesContext fc = FacesContext.getCurrentInstance();
    
    if (!"admin".equals(fc.getExternalContext().getSessionMap().get("role"))){
      ConfigurableNavigationHandler nav 
      = (ConfigurableNavigationHandler) 
        fc.getApplication().getNavigationHandler();
    
      nav.performNavigation("access-denied");
    }
    
  }
  
}

The following code is from access-denied.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"
      >
 
    <h:body>
 
      <h1>Access Denied!</h1>
 
    </h:body>
 
</html>


Download Role.zip





To RUN

Copy the generated WAR file from the target folder to Tomcat deployment folder and run Tomcat-Install-folder/bin/startup.bat.

After Tomcat finish starting, type the following URL in the browser address bar. 

http://localhost:8080/simple-webapp/demo.xhtml