Sharon,
As it turns out I just read something about this yesterday. This can
occur when refactoring code in a jsp environment.
Often you need to restart the tomcat server to get the classes loaded
properly.
Dave
P.S. it's also one of the reasons why I use a template engine ;)
On Tue, 2002-04-23 at 18:28, Sharon Cowling wrote:
> I'm working on a web application and everything was fine until this morning when I modified some Java code copied it
overran the application and got this:
>
> Error: 500
> Location: /nzfm_frame.htm
> Internal Servlet Error:
> java.lang.IllegalStateException: Can't happen - classname is null, who added this ?
> at org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:261)
> at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
> at org.apache.tomcat.core.Handler.service(Handler.java:254)
> at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
> at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
> at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
> at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> at java.lang.Thread.run(Thread.java:484)
>
> Now I can't get to any pages not even the index page, I have taken the code out that I added to check if it was
causingthat (didn't think it could be) all I get is this above error. Is this to do with the JDBC driver or Tomcat?
>
> taupo=> select version();
> version
> ---------------------------------------------------------------
> PostgreSQL 7.1.3 on i686-pc-linux-gnu, compiled by GCC 2.95.3
>
> JDBC Driver:
> jdbc7.1-1.2
>
> The application code is pretty much all written on the JSP pages and I am refactoring the code for a model view
controllerarchitecture, only just started the refactoring, nothing that could be causing this I'm sure. The code I had
beenadding this morning just manipulated string formatting.
>
> Advice please! The system is supposed to be in a state that the users can have a preview of it tomorrow!
>
>
> Regards,
>
> Sharon Cowling
>
>
>
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