> > But it is probably worth ensuring Qizx Server is deployable
> > on Ubuntu Server, in the Tomcat shipped with the system. And
> > by extension on all Debian-packages-based systems, they are
> > kind of usual ;-)
> Very strange. There is nothing special in the qizx webapp.
> Does Tomcat/Ubuntu really work [on other webapps]?
> Yes, I use it for instance for my websites for EXPath and H2O
> Consulting. But I already encountered some issues because of
> dynamic class loading. I am not an expert in Java Security nor
> Tomcat Security Manager, but I think that depends how you define
> "something special in a webapp", and I think using the class
> loader is something special yet, which is likely to fail in most
> production environments, where the security level is usually
> higher.
Hi Florent,
after some research, I am pretty confident that this issue has
little to do with Qizx:
1) it is generally acknowledged that Tomcat or other servers
prepackaged in Linux distribs have configuration issues,
so it is advisable to use the original from Apache.
2) the offending class is part of the webapp: this cannot be
a classpath issue.
3) I agree that the problems seems related to security (FileUtil
does file access, as the name suggest, and that could be barred
by a high security level.)
4) The exception (error) raised is NoClassDefFoundError rather
than ClassNotFoundException: this suggests a weird physical access
problem. I got this recently on Windows because the name of the
class file was not matching (the case) of the class name.
--
Xavier Franc
Qizx design and development
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