The best way to implement user's access level via Servlet & JSP (or more)?

Hi all,
I am trying to implement user's access level in an application to allow certain access to certain page or components within a page (buttons, etc.). From my experience with JSP, Java, servlet, I am think of having the jsp/servlet to check for user's access level to decide what jsp components or forward page to go to next but that doesn't seem clean or elegant way to handle it.
Any suggestions of how to do this? Are there other technologies (Struts) out there that can handle this?
Thanks so much in advance for your feedback or suggestion,
Thong Bui

I haven't experienced a lot in defining security roles before, and there is probably a lot to learn about this area. However I might be able to assist you in some way. Whenever I have 2 or more objects that need to be stored in the session, I create a class called UserContainer. Say you have three properties:
empSsn (String) , isAdmin (Boolean), isAgent (Boolean), then:
public class UserContainer implements Serializable {
private String empSsn = null;
private Boolean isAdmin = null;
private Boolean isAgent = null;
public UserContainer() {
super();
public void setIsAdmin(Boolean isAdmin) {
this.isAdmin = isAdmin;
public Boolean getIsAdmin() {
return this.isAdmin;
// getters and setters for the other properties
Of course after you decide (in your sevlet) whether the app user is an administrator or an agent, you can set the corresponding property in the user container, and then save it in the session. Afterwords, in any jsp, you can decide to display a certain element (e.g a button) after you check the user's role. Example:
// Welcome.jsp
<% UserContainer userContainer = (UserContainer) session.getAttribute("userContainer");
boolean isAdmin = userContainer.getIsAdmin().booleanValue();
boolean isAgent = userContainer.getIsAgent.booleanValue();
if(isAdmin) { %>

<% } if(isAgent) { %>

<% } >Of course, this is a very simple way of doing such a task, you will find more secure ways if you look at LDAP or something of that matter.
Cheers

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