[keycloak-user] Spring boot + keycloak

[Ondra Pala]

Hello We use this example: https://github.com/foo4u/keycloak-spring-demo
(for Spring boot and Keycloak)

I have keycloak.json(realm in this file exists) file in my WEB-INF folder,
but when I run my application, I get exception:

java.lang.RuntimeException: Must set 'realm' in config

Full stack of this exception:

java.lang.RuntimeException: Must set 'realm' in config
    at
org.keycloak.adapters.KeycloakDeploymentBuilder.internalBuild(KeycloakDeploymentBuilder.java:53)

~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
     at
org.keycloak.adapters.KeycloakDeploymentBuilder.build(KeycloakDeploymentBuilder.java:152)

~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
     at
org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver.resolve(KeycloakSpringBootConfigResolver.java:37)

~[keycloak-spring-boot-adapter-2.4.0.Final.jar:2.4.0.Final]
     at
org.keycloak.adapters.AdapterDeploymentContext.resolveDeployment(AdapterDeploymentContext.java:88)

~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at
org.keycloak.adapters.PreAuthActionsHandler.preflightCors(PreAuthActionsHandler.java:107)

~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at
org.keycloak.adapters.PreAuthActionsHandler.handleRequest(PreAuthActionsHandler.java:79)

~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
     at
org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:183)

~[keycloak-tomcat-core-adapter-2.4.0.Final.jar:2.4.0.Final]
     at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)

~[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

[na:1.8.0_101]
     at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

[na:1.8.0_101]
     at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

[tomcat-embed-core-8.5.5.jar:8.5.5]
     at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]

Our configuration of security looks like:

/**
 * Application security configuration.
 *
 *
 * @author Scott Rossillo
 */
@Configuration
@EnableWebSecurity
@ComponentScan(basePackageClasses = KeycloakSecurityComponents.class)
public class SecurityConfig extends KeycloakWebSecurityConfigurerAdapter
{

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth)
throws Exception {
        auth
.authenticationProvider(keycloakAuthenticationProvider());
    }

    @Autowired
    public KeycloakClientRequestFactory keycloakClientRequestFactory;

    @Bean
    public CacheControlHandlerInterceptor
cacheControlHandlerInterceptor() {
        return new CacheControlHandlerInterceptor();
    }


    @Bean
    public FilterRegistrationBean
keycloakAuthenticationProcessingFilterRegistrationBean(
            KeycloakAuthenticationProcessingFilter filter) {
        FilterRegistrationBean registrationBean = new
FilterRegistrationBean(filter);
        registrationBean.setEnabled(false);
        return registrationBean;
    }

    @Bean
    public FilterRegistrationBean
keycloakPreAuthActionsFilterRegistrationBean(
            KeycloakPreAuthActionsFilter filter) {
        FilterRegistrationBean registrationBean = new
FilterRegistrationBean(filter);
        registrationBean.setEnabled(false);
        return registrationBean;
    }


    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
    public KeycloakRestTemplate keycloakRestTemplate() {
        return new KeycloakRestTemplate(keycloakClientRequestFactory);
    }

    @Bean
    @Override
    protected SessionAuthenticationStrategy
sessionAuthenticationStrategy() {
         return new RegisterSessionAuthenticationStrategy(new
SessionRegistryImpl());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception
    {
        System.out.println("config");
        super.configure(http);
        http
                .authorizeRequests()
                .antMatchers("/*").denyAll();
    }

}


Can you please tell me, where it could by mistake.

Thanks for your answer and time.

Ondrej Pala