I think i got that error once when i tried to put a null Object into
session. do something like
if (Object != null){
session.putValue("key", Object);
}
-hope that helps,
Jimmy
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 04, 2001 2:26 PM
To: [EMAIL PROTECTED]
Subject: Need help on Session's null pointer exception
I run a servlet on Tomcat3.3 and got the following error:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:380)
at org.apache.tomcat.core.ServerSession.setAttribute(Unknown =
Source)
at =
org.apache.tomcat.facade.HttpSessionFacade.setAttribute(Unknown Sourc
e)
at org.apache.tomcat.facade.HttpSessionFacade.putValue(Unknown =
Source)
at =
com.fub.its.servlet.SecuredServlet.setCurrentEmployee(SecuredServlet.
java:162)
at =
com.fub.its.controller.DepartmentController.checkForSwitchToDepartmen
t(DepartmentController.java:47)
at =
com.fub.its.controller.DepartmentController.doGet(DepartmentControlle
r.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at =
com.fub.its.servlet.ApplicationServlet.service(ApplicationServlet.jav
a:160)
at =
com.fub.its.servlet.SecuredServlet.service(SecuredServlet.java:129)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at org.apache.tomcat.facade.ServletHandler.doService(Unknown =
Source)
at org.apache.tomcat.core.Handler.invoke(Unknown Source)
at org.apache.tomcat.core.Handler.service(Unknown Source)
at org.apache.tomcat.facade.ServletHandler.service(Unknown =
Source)
at org.apache.tomcat.core.ContextManager.internalService(Unknown =
Source)
at org.apache.tomcat.core.ContextManager.service(Unknown Source)
at =
org.apache.tomcat.modules.server.Http10Interceptor.processConnection(
Unknown Source)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(Unknown =
Source)
at =
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(Unknown
Source)
at java.lang.Thread.run(Thread.java:484)
------End of System Error-------------------------------
--------------------------------------------------------
Can anyone kindly tell me what is wrong with my setting? I changed the
expiration time for session in server.xml
and I am sure the SessionIdGenerator is set too.
Bill
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