How do I pass query parameters when I use Request Dispatcher?

[I am using:

 
reqDisp = servletContext.getRequestDispatcher("/applicationsecurity/RedirectLogin.jsp")
reqDisp.forward(req,res);

Since you're working with a request, nstead of using the getRequestDispatcher() method of the ServletContext, you should use the getRequestDispatcher of the HttpServletRequest object.

reqDisp = request.getRequestDispatcher("/applicationsecurity/RedirectLogin.jsp");
reqDisp.forward(req,res);