import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.authority.mapping.SimpleAuthorityMapper;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;

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我有

@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) {
    KeycloakAuthenticationProvider keycloakAuthenticationProvider = keycloakAuthenticationProvider();
    SimpleAuthorityMapper grantedAuthorityMapper = new SimpleAuthorityMapper();

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如果我用这句话

grantedAuthorityMapper.setDefaultAuthority("ROLE_ADMIN");

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然后我可以访问我的API端点。但是，如果我使用这两行：

List<GrantedAuthority> grantedAuthorityList = AuthorityUtils.createAuthorityList("ROLE_ADMIN", "ROLE_USER");
grantedAuthorityMapper.mapAuthorities(grantedAuthorityList);

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则无法访问我的API端点。
我认为mapAuthorities方法不起作用，或者我错过了一些东西，或者我做错了一些事情。
这是最后两行：

keycloakAuthenticationProvider.setGrantedAuthoritiesMapper(grantedAuthorityMapper);
    auth.authenticationProvider(keycloakAuthenticationProvider);
}

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