public static void afterRoot(
FacesContext context, HttpServletRequest req, HttpServletResponse res) {
HttpSession session = ((HttpServletRequest) req).getSession(false);
if (session != null)
session.setAttribute(ViewHandler.CHARACTER_ENCODING_KEY, res.getCharacterEncoding());
}
/**
* Evaluate the expr as an object.
*
* @param env the page context
*/
@Override
public Object getValue(ELContext env) throws ELException {
if (!(env instanceof ServletELContext))
return env.getELResolver().getValue(env, null, "session");
env.setPropertyResolved(true);
ServletELContext servletEnv = (ServletELContext) env;
HttpServletRequest req = servletEnv.getRequest();
HttpSession session = req.getSession(false);
if (session != null) return session.getAttribute(_field);
else return null;
}