Now, I develop the Web application by using localhost and I found that when I use request.getSession() of same session from JSP( the first page- to sent to Servlet )which keep Connection object attribute inside the session and when running this application ,It 's okay and no problems.
However, When I try to do the same thing to deploy on cloud with Google app engine ,I got the problem when Servlet is requested the session from JSP that sent by using session.getAttribute() method and found that the value of connection object (Attribute of session) return null .
Why I do the same situation but the servlet cannot get the old value from attribute/session on Google app engine? How should I do in this case?
Thanks in advance .