Fab,
On 7/6/25 6:58 AM, Fab Stz wrote:
Does tomcat support content negotiation like apache httpd does [1]
for the Accept-Language header?
No.
How to configure this for a webapp context?
You'll have to build this capability into your own web application.
> Use case is *serving static pages* with "href=my_page.html" and where
> files in the webapp folder are actually> - my_page.html.en
- my_page.html.de
- my_page.html.fr
- my_page.html.it
- ...
At the moment, when trying to load my_page.html it shows 404 error.
Do you have a file called my_page.html without any language specifier?
Tomcat is looking for a directory entry with the exact name "my_page.html".
From what I understand it would be possible with
org.apache.tomcat.util.http.parser.AcceptLanguage, but only is
served inside a servlet. AFAIU this is not usable for static pages.>
[1] https://httpd.apache.org/docs/current/content-negotiation.html
You will have to implement this yourself in a deployed application,
since Tomcat does not support it directly. You have access to the
Accept-Language header but you will have to parse the header value and
compare it to the list of languages "supported" by the set of on-disk files.
I wouldn't recommend using Tomcat's AcceptLanguage class, since it's not
really part of the public API and wouldn't be portable to other
containers. Instead, implement your own content-negotiation, since it's
not very complicated.
On the other hand, you could advocate for content-negotiation
capabilities similar to mod_negotiation to be built into Tomcat.
My advice would be to use a content-negotiating web server like httpd as
a proxy to Tomcat, but the addition of another component into your
environment might be more complicated than just implementing
content-negotiation in the application.
-chris
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