org.apache.jasper.JasperException

My OS is Debian Linux. I am using TOMCAT5 with Kaffe VM. I want to install JAMM which is a java interface for virtual mail domains management. But it is not working. I try it many times but no way i cant understand the problem. Here is my Tomcat error report. Thanks to everone.
 
HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException
      org.apache.jasper.servlet.JspServletWrapper.service (JspServletWrapper.java:372)
      org.apache.jasper.servlet.JspServlet.serviceJspFile (JspServlet.java:292)
      org.apache.jasper.servlet.JspServlet.service (JspServlet.java:236)
      javax.servlet.http.HttpServlet.service (HttpServlet.java:802)
      java.lang.reflect.Method.invoke0 (Method.java)
      java.lang.reflect.Method.invoke (Method.java:255)
      org.apache.catalina.security.SecurityUtil$1.run (SecurityUtil.java:243)
      java.security.AccessController.doPrivileged (AccessController.java:195)
      javax.security.auth.Subject.doAsPrivileged (Subject.java:250)
      org.apache.catalina.security.SecurityUtil.execute (SecurityUtil.java:272)
      org.apache.catalina.security.SecurityUtil.doAsPrivilege (SecurityUtil.java:161)


root cause

java.lang.NullPointerException
      org.apache.struts.util.RequestUtils.computeURL (RequestUtils.java:521)
      org.apache.struts.util.RequestUtils.computeURL (RequestUtils.java:436)
      org.apache.struts.util.RequestUtils.computeURL (RequestUtils.java:396)
      org.apache.struts.taglib.logic.RedirectTag.doEndTag (RedirectTag.java:294)
      org.apache.jsp.index_jsp._jspx_meth_logic_redirect_0 (index_jsp.java:146)
      org.apache.jsp.index_jsp._jspService (index_jsp.java:82)
      org.apache.jasper.runtime.HttpJspBase.service (HttpJspBase.java:94)
      javax.servlet.http.HttpServlet.service (HttpServlet.java:802)
      org.apache.jasper.servlet.JspServletWrapper.service (JspServletWrapper.java:324)
      org.apache.jasper.servlet.JspServlet.serviceJspFile (JspServlet.java:292)
      org.apache.jasper.servlet.JspServlet.service (JspServlet.java:236)
      javax.servlet.http.HttpServlet.service (HttpServlet.java:802)
      java.lang.reflect.Method.invoke0 (Method.java)
      java.lang.reflect.Method.invoke (Method.java:255)
      org.apache.catalina.security.SecurityUtil$1.run (SecurityUtil.java:243)
      java.security.AccessController.doPrivileged (AccessController.java:195)
      javax.security.auth.Subject.doAsPrivileged (Subject.java:250)
      org.apache.catalina.security.SecurityUtil.execute (SecurityUtil.java:272)
      org.apache.catalina.security.SecurityUtil.doAsPrivilege (SecurityUtil.java:161)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0 logs.


--------------------------------------------------------------------------------

Apache Tomcat/5.0
funkypunkydrunkyAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

suprapto45Commented:
Hi,

Your main problem is on
java.lang.NullPointerException in org.apache.struts.util.RequestUtils.computeURL (RequestUtils.java:521)

I have never used JAMM but you may try to find the documentation especially for the RequestUtils file

David
0
radarshCommented:
RequestUtils.computeURL method is deprecated. I guess replacing the struts jar
with the latest version might help.

________
radarsh
0
fargoCommented:
Hi,

It seems from the error that it's happening in the index.jsp and you must be using the redirect tag in it. Is it?
Could you please check for the attributes used for the redirect tag? r they correct?

or post it here..

regards,
fargo
0
funkypunkydrunkyAuthor Commented:
Hi guys
Thank you for your responds. As I pointed out i am using Debian sarge. And i used deb. package to setup tomcat and java. I reinstall Tomcat from jakarta.apache.org and JDK from sun. Everything is getting ok. Sorry for taking your valuable time to post. Shortly get rid of the deb. package and use the sources codes:) There is no problem about jamm. But i wish they had pointed out the problem about debian in their documentations. I really spent my time to understand the problem. Thanx
0
GranModCommented:
PAQed with points refunded (125)

GranMod
Community Support Moderator
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
JSP

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.