[keycloak-user] Spring Security annotation problem

Hello! I'm just a begginer in Spring Security, but I would like to know is it possible to configure keycloak in a way that I can use @PreAuthorize, @PostAuthorize, @Secured and other annotations. For example, I've configured the keycloak-spring-security-adapter and Spring Security in my simple Spring Rest webapp so that I have access to Principal object in my controller, like this: @RestController public class TMSRestController { @RequestMapping("/greeting") public Greeting greeting(Principal principal, @RequestParam(value="name") String name) { return new Greeting(String.format(template, name)); } ... } But when I try this (just an example, actually I want to execute custom EL expression before authorization): @RestController public class TMSRestController { @RequestMapping("/greeting") @PreAuthorize("hasRole('ADMIN')") public Greeting greeting(Principal principal, @RequestParam(value="name") String name) { return new Greeting(String.format(template, name)); } ... } ... I get exception: org.springframework.security.authentication.AuthenticationCredentialsNotFoundException: An Authentication object was not found in the SecurityContext What do I need to make this spring security annotations work?