I knew the problem was simple and the solution was simpler.
The <jsp-file> element takes the relative path.
So it would be
<jsp-file>
/survey/surveyTrack.jsp
</jsp-file>
There were some minor typing mistakes also. So I am giving here the full web.xml file again.
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Test Webapp</display-name>
<description>This is an online survey system.</description>
<servlet>
<servlet-name>
sessionTracker
</servlet-name>
<jsp-file>
/survey/sessionTrack.jsp
</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>
sessionTracker
</servlet-name>
<url-pattern>
/survey/sessionTracker
</url-pattern>
</servlet-mapping>
<session-config>
<!-- specifies session timeout as 25 minutes. -->
<session-timeout>25</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<security-constraint>
<web-resource-collection>
<web-resource-name>
sessionTracker
</web-resource-name>
<url-pattern>
/survey/sessionTracker
</url-pattern>
<http-method>
POST
</http-method>
</web-resource-collection>
<auth-constraint>
<role-name>
user
</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>
FORM
</auth-method>
<form-login-config>
<form-login-page>
/survey/logon.jsp
</form-login-page>
<form-error-page>
/survey/error.html
</form-error-page>
</form-login-config>
</login-config>
<security-role>
<role-name>user</role-name>
</security-role>
<security-role>
<role-name>admin</role-name>
</security-role>
</web-app>
[ August 05, 2002: Message edited by: Ashik uzzaman ]
