As what Christopher Schultz mentioned, "including switching package
names", i.e. from javax to jakarta.. when I did the webapp migration
to tomcat 10, I had to make all the libraries to reference jakarta
though, including taglib-mailer, jsp  and so on.

hth

Jason

On Fri, May 27, 2022 at 8:53 AM Rodrigo Cunha <rodrigo.root...@gmail.com> wrote:
>
> >
> > I suspect you should be able to upgrade your Tomcat from 7 to 10 in one
> > shot, but you might want to go from 7->9 and wait a little on 10.
> >
> Yes, it is! but not in a production environment. I want to upgrade in only
> one shot.
>
> On Thu, May 26, 2022 at 8:32 PM Christopher Schultz <
> ch...@christopherschultz.net> wrote:
>
> > Rodrigo,
> >
> > On 5/26/22 17:16, Rodrigo Cunha wrote:
> > > i need upgrade my tomcat server from 7 to 10. I don't saw in internet
> > > nothing about that. Commonly i upgraded in steps, 7 to 8, 8 to 9 and 9 to
> > > 10.
> > > Are there a problem upgrade from 7 to 10?
> >
> > I suspect you should be able to upgrade your Tomcat from 7 to 10 in one
> > shot, but you might want to go from 7->9 and wait a little on 10.
> >
> > Why?
> >
> > Tomcat 10 is significantly different because it implements a new version
> > of the servlet and related specifications, including switching package
> > names, etc. There *is* an automated conversion tool that can be used at
> > deployment-time to convert your pre-Jakarta-EE application to a
> > Jakarta-EE application, but you might not want to trust it immediately
> > in production without a whole lot of testing. So I recommend Tomcat 9 at
> > first.
> >
> > YMMV
> >
> > Something that is critically important is that, when upgrading, you
> > don't even try to re-use the existing server.xml file you have for your
> > Tomcat 7 installation. Instead, look at the differences between your
> > current server.xml file and an unmodified one from the original
> > distribution of Tomcat 7, and make some notes. Then, make similar
> > changes to the original server.xml file from the new Tomcat.
> >
> > -chris
> >
>
>
> --
> Atenciosamente,
> Rodrigo da Silva Cunha
> São Gonçalo, RJ - Brasil

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