How to get locale selected in keycloak login page, not user default locale?

Question

I am working on a springboot application with the keycloak springboot adaptor. In the AccessToken, I can find the locale defined in the user keycloak. But i want to get the locale selected on the login page.

How can get this info?

thanks in advance

Answer 1

In my application (@ Server A ) the /backoffice urls secured by Keycloak. If a user will open the backoffice he is redirected to Keycloak login (@ Server B ).

If I pass ui_locales=de or ui_locales=en in my application on Server A then it's respected during the redirect and Keycloak will display the login page in the proper language on Server B .

Beforehand, de and en message properties files a present in your Keycloak themes and internationalization must enabled in your Keycloak realm configuration.

localhost:5050/backoffice?ui_locales=de result in german Keycloak login page and localhost:5050/backoffice?ui_locales=en results in english Keycloak login page.

greetz

My sources and thanks to:

• https://lists.jboss.org/pipermail/keycloak-dev/2018-April/010714.html
• https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest