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Start Keycloak. For more information on installing and starting Keycloak, see the
Keycloak Getting started documentation.
In the Keycloak Admin Console, create a new Realm
MyDemoRealm in the Realm settings.
In the Realm MyDemoRealm, create a new client, for
example:
Client ID: Demo
Home URL:
http://localhost:8080/realms/MyDemoRealm/Demo/
Client authentication is turned on.
In the Client details page of the new client, you can
get the Client Secret in the
Credentials tab.
The URL
http://localhost:8080/realms/MyDemoRealm/protocol/openid-connect/certs
is accessible. It will return the information of the keys.
Send a POST request using Postman to the URL
http://localhost:8080/realms/MyDemoRealm/protocol/openid-connect/token
with the client_id, client_secret values
obtained from the Client details page and
grant_type set to
client_authentication.
The response from this POST request will be the access token and its
properties. This access token will be used to send a request to the JWT validation
enabled REST services.
In the Client details page of the new client, you can get the Client Secret in the Credentials tab.
The response from this POST request will be the access token and its properties. This access token will be used to send a request to the JWT validation enabled REST services.