Android form not working properly

[Peter Dolinsky]

i´m using 3 jsp pages to retrieve personal info of registered members: checklogin.jsp, this file is verifying, whether someone is registered, select.jsp, this file contains the select query and GSON.jsp, this file contains gson object with results from the previously mentioned select query. The login and password is sent from android application...My problem is that the output shows everywhere null.
This part of code (checklogin.jsp) records data from login form. (the username is stored to session)

String user = request.getParameter("username");
session.setAttribute("userik", user);
String pass = request.getParameter("pwd");

This part of code is selecting info of this logged member and stores this info to sessions(select.jsp)

ResultSet rs = st.executeQuery("select * from users where login='" + session.getAttribute("userik") + "'");
    String id = null;
    String username = null;
    String pwd = null;
    String ul = null;
    String t = null;

    while (rs.next()) {
        id = rs.getString(1);
        username = rs.getString(2);
        pwd = rs.getString(3);
        ul = rs.getString(4);
        t = rs.getString(5);
    }
   session.setAttribute("id", id);
   session.setAttribute("username", username);
   session.setAttribute("pwd", pwd);
   session.setAttribute("ul", ul);
   session.setAttribute("t", t);
    response.sendRedirect("Select.jsp");

This part is displaying the info(gson.jsp):
{"data": [ {"asd":"ID", "asc": "<% out.println(session.getAttribute("id")); %>"}, {"asd":"Name", "asc": "<% out.println(session.getAttribute("username")); %>"}, {"asd":"Password", "asc": "<% out.println(session.getAttribute("pwd")); %>"}, {"asd":"User Level", "asc": "<% out.println(session.getAttribute("ul")); %>"}, {"asd":"Team", "asc": "<% out.println(session.getAttribute("t")); %>"} ]}

This gson.jsp is showing null everywhere. I dont know where is the problem, because when i tried to login from jsp form(not from android), the gson.jsp shows me the info of logged person.

Can you help me?
Thanks.

[Steve Luke]

Sessions are usually tracked by cookies, does the Android device have cookies turned off? Are you properly encoding the URL to account for this (ref: http://docs.oracle.com/javaee/6/tutorial/doc/bnagm.html)?

[Peter Dolinsky]

I changed the NetBeans project settings, but the output is same. Cookies..i´m connecting through application, not through browser. How can i delete cookies in application?

[Steve Luke]

I am not sure what NetBeans has to do with it: probably nothing. If you are using app code to connect to the server then you need to handle Cookies yourself. Android has the Apache HTTP Client built in which will make Handling the cookies and requests easier. You should read the documents on http://hc.apache.org/httpclient-3.x/ to learn how to use it.