Keycloak retrieve custom attributes to KeycloakPri

问题:

In my rest service i can obtain the principal information after authentication using

KeycloakPrincipal kcPrincipal = (KeycloakPrincipal) servletRequest.getUserPrincipal();

statement.

Keycloak principal does'nt cotain all the information i need about the authenticated user. Is it possibile to customize my own principal type? On the keycloak-server-end i ve developed a user federation provider. I saw that UserModel makes possible to add a set of custom attributes to my user.

Is it possibile to insert my custom principal in that code?

Is it possible to retrieve this attributes from keycloak principal?

What is the way?

回答1:

To add custom attributes you need to do three things:

1. Add attributes to admin console
2. Add claim mapping
3. Access claims

The first one is explained pretty good here: https://www.keycloak.org/docs/latest/server_admin/index.html#user-attributes

Add claim mapping:

1. Open the admin console of your realm.
2. Go to Clients and open your client
3. This only works for Settings > Access Type confidential or public (not bearer-only)
4. Go to Mappers
5. Create a mapping from your attribute to json
6. Check "Add to ID token"

Access claims:

final Principal userPrincipal = httpRequest.getUserPrincipal();

if (userPrincipal instanceof KeycloakPrincipal) {

    KeycloakPrincipal<KeycloakSecurityContext> kp = (KeycloakPrincipal<KeycloakSecurityContext>) userPrincipal;
    IDToken token = kp.getKeycloakSecurityContext().getIdToken();

    Map<String, Object> otherClaims = token.getOtherClaims();

    if (otherClaims.containsKey("YOUR_CLAIM_KEY")) {
        yourClaim = String.valueOf(otherClaims.get("YOUR_CLAIM_KEY"));
    }
} else {
    throw new RuntimeException(...);
}

Hope this helps and fits your use case. I used this for a custom attribute I added with a custom theme.

回答2:

• Select Users > Lookup > click on ID > go to attributes tab > Add attribute > e.g.: phone > Save

• Select Clients > click on Client ID > go to Mappers Tab > create mapper

  

  

  

• Get custom attributes

  

  

UPDATE

• Add 'phone' attribute on Group level, assign user to that group, and you get 'phone' attribute from group level for all users

• Go back to mapper and update 'phone' with 'Aggregate attribute values = true' and 'Multivalued=true', and you get 'phone' as list with both attributes from group and user level. If you keep 'Aggregate attribute values = false' or 'Multivalued=false', you get just one value, where 'phone' attribute from user will override 'phone' attribute from group (which make sense)