No, the hs is not null .. have checked that.
On Saturday, February 15, 2003, at 01:37 AM, Tim Moore wrote:
Because hs is null.
--
Tim Moore / Blackboard Inc. / Software Engineer
1899 L Street, NW / 5th Floor / Washington, DC 20036
Phone 202-463-4860 ext. 258 / Fax 202-463-4863
-----Original Message-----
From: Mufaddal [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 14, 2003 2:35 AM
To: Tomcat List
Subject: Servlet produces HTML .. how do i pass attributes in
the session object ?
Hi ...
in my doPost() I do some processing and then I do ....
HashSet hs = getFruits(userName);
PrintWriter ot = response.getWriter();
ot.println("<html>");
ot.println("<body>");
ot.println("<h1><b> I AM FROM TIMBAKTU </b></h1>");
ot.println("</body>");
ot.println("</html>");
session.setAttribute("FRUITS", hs);
ot.close();
Basically my servlet is writing some HTML output and setting
a HashSet
in the session object. When I do this i get the following
exception : Internal Servlet Error:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:389)
at
org.apache.tomcat.session.StandardSession.setAttribute(Standar
dSession.j
ava:731)
at
com.wavesinmotion.cw.classes.jsphelpers.LoginServlet.doPost(Lo
ginServlet
.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper
.java:405)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextM
anager.jav
a:806)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:752)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processCo
nnection(H
ttpConnectionHandler.java:213)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoin
t.java:416
)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPo
ol.java:50
1)
at java.lang.Thread.run(Thread.java:554)
Does anybody know why ?
Thanks.
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