[keycloak-user] How to retrieve user ID from Keycloak to my web app

[Marek Posolda]

If you just authenticated the user and you're using Keycloak servlet 
adapter, you can just get the ID of authenticated user by calling 
servletRequest.getRemoteUser() . You can even retrieve the other claims 
besides user ID. For example email, firstName, lastName etc. It's 
possible to get them from the token, I suggest to take a look at our 
quickstart and documentation for more details.

Marek

On 27/11/2018 05:22, Kunal Kumar wrote:
> Before, my web app is has its own login form to authenticate users.
>
> But since I have connected my web app to Keycloak to authenticate the users
> now, my web app does not need to have the login form anymore, hence I need
> to remove it.
>
> This was roughly how I retrieved the users information before Keycloak:-
>
> if (chkLogin(getUserID(), getUserPwd())) {
>              MaintainUser mu = new MaintainUser();
>              this.usrInfo = null;
>              String[] usr = mu.validatePassword(getUserID(), getUserPwd()); }
>
> This is not the full coding, but basically I use the getUserID method to
> retrieve the users info and check it for authentication before. How do I
> perform this if I want to retrieve the user ID from the Keycloak admin
> console?
>
>
> Regards,
>
> Kunal Kumar
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