Session return null in Servlet

jay_goh

Sorry for all because my pc does not have chinese input and is restricted by company, so I have to type in english.
I want to ask, I got an android apps and a servlet in server.
When i first login from the apps, the authentication is done in server and create a new session.
Everything is fine. When I post data again from the apps, I am not able to get the previous session in server as it returns null.
Below is the sample codes that I have written.
Apprieciate if anyone could help me on this matter.
Thank you very much.

// This is the part where after login the session is created. This is the code in servlet.

            session = createSession(request, outPool);

String sessionid = session.getId();

            response.setHeader("SESSION_ID", "JSESSIONID="+ sessionid);

//This is the part where android apps post data after login. Set the cookie into the request header to send to servlet
URL url = new URL(sbURL.toString());
conn = (HttpsURLConnection)url.openConnection();

conn.setRequestMethod("OST");

conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
if(MyApps.cookie != null)
{

                                      conn.setRequestProperty("COOKIE", MyApps.cookie);

}

                        //sending content

output = conn.getOutputStream();
output.write(szInput.getBytes());

//This is the part in servlet where it receives the data posting from android apps.
szUserIP = request.getHeader("ROXY-IP");
sysPool.set("SERVER_IP", szServerIP);
sysPool.set("REMOTE_IP", szUserIP);
String szQString = request.getQueryString();
String szUserAgent = request.getHeader("USER-AGENT");
//Here the session always get null as supposingly it should retrive the previous session created during login
session = request.getSession(false);

hooiyijun

虽然我不是很熟悉java的servlet, 但我能明白源码之中的意思。可能是你的android的code不能抓到最新的http request。你可以试试访问stackoverflow.com，这个网站有很多外国programmer热心解决简单的问题。或许你参考之下能不能帮助你的例子。
http://stackoverflow.com/questio ... android-and-or-java
http://stackoverflow.com/questio ... not-keeping-session