Java Help - servlet error

Author

servlet error

Navodit

2006-08-22, 10:01 pm

Hi

I am working on an application server application using Jrun as the servlet
engine. I have not coded the application from scratch but need to get it
working. When attempting to start the server, I am getting the following
error:

500 Internal Server Error
/servlet/AppSessionMgr:

null
java.lang.NullPointerException
at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:205)
at javax.servlet.GenericServlet.log(GenericServlet.java:300)
at javax.servlet.GenericServlet.destroy(GenericServlet.java:122)
at
allaire.jrun.servlet.JRunServletLoader.destroyAll(JRunServletLoader.java:290)
at
allaire.jrun.servlet.JRunServletLoader.destroyAll(JRunServletLoader.java:254)
at allaire.jrun.servlet.JRunSE.destroyAll(JRunSE.java:1376)
at allaire.jrun.servlet.JRunSE.getServletReference(JRunSE.java:1290)
at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:895)
at
allaire.jrun.servlet.JRunNamedDispatcher.forward(JRunNamedDispatcher.java:34)
at allaire.jrun.servlet.Invoker.service(Invoker.java:84)
at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1013)
at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:925)
at
allaire.jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java:88)
at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1131)
at allaire.jrun.servlet.JvmContext.dispatch(JvmContext.java:330)
at allaire.jrun.http.WebEndpoint.run(WebEndpoint.java:107)
at allaire.jrun.ThreadPool.run(ThreadPool.java:267)
at allaire.jrun.WorkerThread.run(WorkerThread.java:74)

I am using Java 1.3, Jrun 3.0 on a Windows 2003 Server machine. If anyone
can provide a clue as to what is wrong here it wd be great !

Andrea Desole

2006-08-23, 4:02 am

Navodit wrote:
> Hi
>
> I am working on an application server application using Jrun as the servlet
> engine. I have not coded the application from scratch but need to get it
> working. When attempting to start the server, I am getting the following
> error:
>
> 500 Internal Server Error
> /servlet/AppSessionMgr:
>
> null
> java.lang.NullPointerException
> at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:205)
> at javax.servlet.GenericServlet.log(GenericServlet.java:300)
> at javax.servlet.GenericServlet.destroy(GenericServlet.java:122)
> at
> allaire.jrun.servlet.JRunServletLoader.destroyAll(JRunServletLoader.java:290)
> at
> allaire.jrun.servlet.JRunServletLoader.destroyAll(JRunServletLoader.java:254)
> at allaire.jrun.servlet.JRunSE.destroyAll(JRunSE.java:1376)
> at allaire.jrun.servlet.JRunSE.getServletReference(JRunSE.java:1290)
> at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:895)
> at
> allaire.jrun.servlet.JRunNamedDispatcher.forward(JRunNamedDispatcher.java:34)
> at allaire.jrun.servlet.Invoker.service(Invoker.java:84)
> at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1013)
> at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:925)
> at
> allaire.jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java:88)
> at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1131)
> at allaire.jrun.servlet.JvmContext.dispatch(JvmContext.java:330)
> at allaire.jrun.http.WebEndpoint.run(WebEndpoint.java:107)
> at allaire.jrun.ThreadPool.run(ThreadPool.java:267)
> at allaire.jrun.WorkerThread.run(WorkerThread.java:74)
>
>
> I am using Java 1.3, Jrun 3.0 on a Windows 2003 Server machine. If anyone
> can provide a clue as to what is wrong here it wd be great !

you have an unusual error, and you are not giving a lot of information.
But I'll give it a try.
A conflict between jar files. In this case, maybe a conflict between
j2ee jar files. Check that you don't have two servlet.jar, j2ee.jar, or
something like that.

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