示例 keycloak spring-boot 应用程序无法找到 bean KeycloakSpringBootConfigResolver

Question

I'm trying to run example app from:

https://github.com/keycloak/keycloak-quickstarts/tree/latest/app-springboot

I'm getting error:

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 1 of method setKeycloakSpringBootProperties in org.keycloak.adapters.springboot.KeycloakBaseSpringBootConfiguration required a bean of type 'org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver' that could not be found.


Action:

Consider defining a bean of type 'org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver' in your configuration.


Process finished with exit code 1

Answer 1

I don't have a solution at the moment, but I can see that the exact same issue has been registered on the Keycloak Jira a couple of months ago: https://issues.jboss.org/browse/KEYCLOAK-10595 . The problem seems to be caused by the code delivered with this PR: https://github.com/keycloak/keycloak/pull/6075 .

The author of the PR described the problem in this way: "The only remaining problem is, that the resolver is usually contained in the configuration using the KeycloakAutoConfiguration (in my example the SharedConfiguration) so you are trying to access the bean while the configuration is stil being created. This can be solved by moving the resolver bean into another configuration which has to be loaded before the KeycloakAutoConfiguration." (source: https://issues.jboss.org/browse/KEYCLOAK-10334?focusedCommentId=13738518&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-13738518 )

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UPDATE (OLD)

On the issue from the Keycloak Jira ( https://issues.jboss.org/browse/KEYCLOAK-11282 ), a temporary workaround has been suggested.

@Configuration
public class MyKeycloakSpringBootConfigResolver extends KeycloakSpringBootConfigResolver {
    private final KeycloakDeployment keycloakDeployment;

    public MyKeycloakSpringBootConfigResolver(KeycloakSpringBootProperties properties) {
        keycloakDeployment = KeycloakDeploymentBuilder.build(properties);
    }

    @Override
    public KeycloakDeployment resolve(HttpFacade.Request facade) {
        return keycloakDeployment;
    }
}

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LATEST UPDATE

A simpler way to solve the problem is to declare a KeycloakSpringBootConfigResolver in a separate configuration class. This option will fix issues with both Spring Boot and Spring Security.

@Configuration
public class KeycloakConfig {

    @Bean
    public KeycloakSpringBootConfigResolver keycloakConfigResolver() {
        return new KeycloakSpringBootConfigResolver();
    }
}

Answer 2

I don't have an actual answer to solve this, but I do see there is a similar bug on the Keycloak issue tracker for another quickstart. https://issues.jboss.org/browse/KEYCLOAK-11218

I was also able to reproduce the same failure you see by cloning that project and trying to run it. You may want to create a ticket for this quickstart project, in case they have missed that the issue affects multiple quickstarts.

I did try defining a bean of that type, but that leads to other runtime errors about other unsatisfied dependencies.

Answer 3

Thomas answer did work for me. The keycloak spring boot properties class had to be enabled manually though, by annotating the Application class like this:

@EnableConfigurationProperties(KeycloakSpringBootProperties.class)

Furthermore the custom keycloak spring boot config resolver bean must be overriden explicitly.

@Bean
@Primary
public KeycloakConfigResolver keycloakConfigResolver(KeycloakSpringBootProperties properties) {
      return new MyKeycloakSpringBootConfigResolver(properties);
}