Java – create a user in the keycloak through the keycloak management client and return the illegalargumentexception

I want to create a user through the keycloak management client, but I get:

This is my keycloak bean:

@Bean
Keycloak keycloak() {
return KeycloakBuilder
    .builder()
    .serverUrl(localhost:9080/auth)
    .realm(REALM)
    .clientId(CLIENT_ID)
    .username(USERNAME)
    .password(PASSWORD)
    .resteasyClient(new ResteasyClientBuilder().connectionPoolSize(10).build())
    .build();
}

I use this code to call keycloak:

CredentialRepresentation credentialRepresentation = new 
CredentialRepresentation();
credentialRepresentation.setType(CredentialRepresentation.PASSWORD);
credentialRepresentation.setValue(password);
UserRepresentation userRepresentation = new UserRepresentation();
userRepresentation.setUsername(username);
userRepresentation.setFirstName(firstName);
userRepresentation.setLastName(lastName);
userRepresentation.setEnabled(true);
userRepresentation.setCredentials(
    Arrays.asList(credentialRepresentation));
keycloak.realm(REALM).users().create(userRepresentation);

Keycloak and keycloak management client are the same version (4.0.0. Final)

My stacktrace looks like this:

This is my build gradle

compile group: 'org.keycloak',name: 'keycloak-admin-client',version: '4.0.0.Final'
compile group: 'org.jboss.resteasy',name: 'resteasy-jaxrs',version: '3.1.4.Final'
compile group: 'org.jboss.resteasy',name: 'resteasy-client',name: 'resteasy-jackson2-provider',version: '3.1.4.Final'

Solution

Are you using spring boot?

I've tried your scenario for myself and it works well for me (tested on keyclone 4.0.0 and spring boot 1.5.10. Release)

I made a change to the way you create bean keyloak (my code is from the official DOCS) Ensure that the domain is master and client_ The ID is admin cli

@Bean
Keycloak initKeycloakWithAdminRole() {
    return Keycloak.getInstance(
            "http://localhost:8080/auth","master","admin","admin-cli");

My code

Service code

Controller code

Disadvantages here