PortletSession in JSP (view)

[ivanlatysh]

I am using jspx pages as a view, and came across an issue of accessing portlet session from jspx page.

I dispatch request to my page using PortletRequestDispatcher :

javax.portlet.PortletRequestDispatcher prd = this.getPortletContext().getRequestDispatcher("/index.jspx");
prd.include(request, response);

the issue arise when I am trying to access session attributes that has been set in processAction method.

Since session shared between portlets on the page I set session attribute with PORTLET_SCOPE that will add portlet prefix in front of the attribute name. If I am using PortletSession I can retrieve it with no problems, but jsp page got HttpSession that knows nothing about attribute prefix.

For now I wrote PortletSessionAttributesWrapper that wraps portlet session into Map interface so I can use ExpressionLanguage (EL and JSTL) to access PortletSession attributes.

request.setAttribute("portletSession", new PortletSessionAttributesWrapper(session));

But it is way inefficient since session attributes exposed as Enumeration.

Is there are any other way of solving this issue?

So far I don't see any other solution.

[scottdawson]

You need to use the Portlet Tag Library:

<%@ taglib uri=?http://java.sun.com/portlet? prefix=?portlet? %>

There is a defineObjects tag that gives access to the renderRequest object and then you can call renderRequest.getPortletSession().

See the Portlet Spec, chapter 22, for details:
http://www.jcp.org/en/jsr/detail?id=168

Regards,
Scott Dawson
Unisys