Spring 引导资源服务器主体名称

Question

我有一个 Keycloak 服务器在运行。 和一个 spring 启动应用程序作为资源服务器。 我可以进行身份验证并获取令牌，spring 启动应用程序将接受令牌。 但是当我想从委托人那里获取用户名时，我会得到一个 UUID 而不是我的 email 或用户名。 我还在我的密钥斗篷中添加了一个映射器，将 preferred_username 映射到用户名。 它正在工作。

JWT 资料

  ...
  "scope": "openid profile email",
  "email_verified": true,
  "username": "test@test.com",
  "DOB": "12345",
  "name": "test test",
  "preferred_username": "test@test.com",
  "given_name": "test",
  "family_name": "test",
  "email": "test@test.com"
}

我的 spring 应用程序属性：

spring:
  security:
    oauth2:
      resourceserver:
        jwt:
          issuer-uri: http://localhost:8080/auth/realms/test

Answer 1

@Configuration
@EnableWebSecurity
@ComponentScan(basePackageClasses = KeycloakSecurityComponents.class)
public class JWTSecurityConfig extends KeycloakWebSecurityConfigurerAdapter {
    
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        KeycloakAuthenticationProvider keycloakAuthenticationProvider = keycloakAuthenticationProvider();
        keycloakAuthenticationProvider.setGrantedAuthoritiesMapper(new SimpleAuthorityMapper());
        auth.authenticationProvider(keycloakAuthenticationProvider);
    }

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

    /**
     * Defines the session authentication strategy.
     */
    @Bean
    @Override
    protected SessionAuthenticationStrategy sessionAuthenticationStrategy() {
        return new RegisterSessionAuthenticationStrategy(new SessionRegistryImpl());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
          .authorizeRequests(authz -> authz
            .anyRequest().permitAll().permitAll())
          .oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt);
    }
}

Answer 2

Spring 安全将 JWT 令牌作为主体保存到 SecurityContextHolder。 例如，以下代码将返回您要查找的用户名。

...
import org.springframework.security.oauth2.jwt.Jwt;
...
@GetMapping(value = "current-user", produces = "application/json")
    ResponseEntity<String> getLoggedInUser() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        Jwt principal = (Jwt) authentication.getPrincipal(); 
        String currentUserName = principal.getClaimAsString("username");
        return new ResponseEntity<String>(currentUserName, HttpStatus.OK);
    }