On Tuesday, 5 April 2022, 17:54:45 BST, Christian Grün <christian.gruen@gmail.com> wrote:

Maybe you can resolve the issue by following the instructions given on
the homepage of Tomcat; did you try that?

“Applications that run on Tomcat 9 and earlier will not run on Tomcat
10 without changes. Java EE based applications designed for Tomcat 9
and earlier may be placed in the $CATALINA_BASE/webapps-javaee
directory and Tomcat will automatically convert them to Jakarta EE and
copy them to the webapps directory. This conversion is performed using
the Apache Tomcat migration tool for Jakarta EE tool which is also
available as a separate download for off-line use.” [1]

Best,
Christian

[1] https://tomcat.apache.org/

On Tue, Apr 5, 2022 at 6:47 PM Christian Grün <christian.gruen@gmail.com> wrote:
>
> Hi Marc,
>
> Thanks for testing and the StackOverflow links.
>
> I think you’ve already discovered the weak spot, which is also
> documented in the Tomcat Migration Guide [1]: The javax.servlet
> packages are not available in Tomcat 10 anymore, so the import
> statements of BaseX would need to be updated.
>
> As BaseX comes with Jetty as standard web server, which relies on the
> javax.servlet package, the Open-Source version of BaseX will remain
> unchanged; but we can offer a custom Tomcat 10 version of BaseX for
> those who are using BaseX commercially.
>
> We’ll do some tests soon to confirm the assumption and update the
> documentation [2].
>
> Best,
> Christian
>
> [1] https://tomcat.apache.org/migration-10.html
> [2] https://github.com/BaseXdb/basex/issues/2085
>
>
> On Mon, Apr 4, 2022 at 2:34 PM Marc Balston <mcbalston@yahoo.com> wrote:
> >
> > Hi Christian,
> >
> > I was using BaseX 9.5 on Tomcat 8.5 and it was fine.
> >
> > On Tomcat 10.0.2 I couldn't get either BaseX 9.5 or 9.7 to work (same issue).
> >
> > I now have Tomcat 9.0.62 running and I've successfully run both BaseX 9.5 and 9.7.
> >
> > Regards
> > Marc
> >
> >
> > On Monday, 4 April 2022, 12:26:32 BST, Christian Grün <christian.gruen@gmail.com> wrote:
> >
> >
> > Hi Marc,
> >
> > I remember there were problem with a past release of BaseX and Tomcat.
> > Which version of BaseX are you using?
> >
> > Best,
> > Christian
> >
> >
> >
> > On Sun, Apr 3, 2022 at 10:45 PM Marc Balston <mcbalston@yahoo.com> wrote:
> > >
> > > Hello,
> > >
> > > I've been successfully running BaseX on Amazon AWS using Tomcat 8.5, but I've been looking to upgrade my server to Tomcat 10.0.2.
> > > However, I've run into an issue: BaseX does not startup and from the logs the cause appears to be a missing class:
> > > java.lang.NoClassDefFoundError: javax/servlet/http/HttpSessionListener
> > >
> > > I believe this is because there was a change between Tomcat 9.x and Tomcat 10 which led to a renaming of the javax.* package to jakata.* (related to a change in the servlet API version) see here for a discussion: https://stackoverflow.com/questions/66711660/tomcat-10-x-throws-java-lang-noclassdeffounderror-on-javax-servlet
> > >
> > > Is my understanding correct and is this a known issue?
> > > If it is a genuine incompatibility, it would be useful to mention this in the documentation (Web Application - BaseX Documentation)
> > >
> > > Thanks
> > > Marc
> > >
> > >
> > >
> > > Marc Balston
> > >