Example in JSP expression language and JSP scriptlets, diffe

[alen_ribic]

I have a Servlet that sets an Action Bean instance as an attribute called 'actionBean'.
I also have successfully setup an AOP interceptor (with load time weaving) to intercept the User bean's getName() method.

class User {
 private String name;

 // getters/setters
}
class ActionBean {
 private User user;

 // getters/setters + other action methods
}

class MyServlet extends HttpServlet {
 public service(HttpServletRequest req, HttpServletRequest resp) {
 User user = new User();
 user.setName("Bob");
 ActionBean actionBean = new ActionBean();
 actionBean.setUser(user);
 request.setAttribute("actionBean", actionBean);
 ...
 }
}

In the JSP context I try the following JSP scriptlet:

<%
 ActionBean actionBean = (ActionBean)request.getAttribute("actionBean");
 User user = actionBean.getUser();
 out.print("user: " + user.getName());
%>

And the call works 100% with the AOP interceptor being called.

However, I try the same with JSP expression language:

${actionBean.user.name}

And the calls works BUT the AOP interceptor does not get called.

Somehow it seems that the JSP expression language and JSP scriptlets get evaluated differently and as a consequence my AOP interceptor does not get called.

Any help would be greatly appreciated.

-Alen