Question

我开发了一个Spring Boot Webservice并使用Keycloak进行访问管理。该网站将一些用户数据存储在数据库中。我尝试将这些数据与登录的用户连接起来。

目前我将用户名与数据存储在一起。但我喜欢存储用户ID而不是用户名。我怎样才能做到这一点？

我试着通过这个获得SecurityContext：

@Bean
@Scope(scopeName = WebApplicationContext.SCOPE_REQUEST, proxyMode = ScopedProxyMode.TARGET_CLASS)
public KeycloakSecurityContext getKeycloakSecurityContext() {
    return ((KeycloakPrincipal<KeycloakSecurityContext>) getRequest().getUserPrincipal()).getKeycloakSecurityContext();
}

但是我收到了一个错误：

There was an unexpected error (type=Internal Server Error, status=500).
Error creating bean with name 'scopedTarget.getKeycloakSecurityContext'
defined in com.SiteApplication: Bean instantiation via factory method
failed; nested exception is
org.springframework.beans.BeanInstantiationException: Failed to
instantiate [org.keycloak.KeycloakSecurityContext]: Factory method
'getKeycloakSecurityContext' threw exception; nested exception is
java.lang.ClassCastException:
org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken
cannot be cast to org.keycloak.KeycloakPrincipal

这是正确的方法吗？缺什么？

谢谢！

Answer 1

我在代码中做了类似的事情。

public class AuthenticationTokenProcessingFilter extends GenericFilterBean {

        @Override
        public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

            if (!(request instanceof HttpServletRequest)) {
                throw new RuntimeException("Expecting a HTTP request");
            }

            RefreshableKeycloakSecurityContext context = (RefreshableKeycloakSecurityContext) request.getAttribute(KeycloakSecurityContext.class.getName());

            if (context == null) {
                handleNoSecurityContext(request, response, chain);
                return;
            }

            AccessToken accessToken = context.getToken();
            Integer userId = Integer.parseInt(accessToken.getOtherClaims().get("user_id").toString());

            chain.doFilter(request, response);
        }

}

在执行此操作之前，您必须将user_id添加到由keycloak发出的访问令牌中。您可以通过映射器执行此操作，如下面的屏幕截图所示。

此外，不要忘记通过向应用程序类添加@Bean方法，将上面的处理过滤器添加到应用程序生命周期中。

@Configuration
@EnableAutoConfiguration(exclude = {FallbackWebSecurityAutoConfiguration.class, SpringBootWebSecurityConfiguration.class, DataSourceAutoConfiguration.class})
@ComponentScan
@EnableAsync
public class MyServiceClass {

    public static void main(String[] args) {
        Properties properties = new Properties();
        new SpringApplicationBuilder(MyServiceClass.class)
                .properties(properties)
                .bannerMode(Banner.Mode.OFF)
                .run(args);
    }


    @Bean
    public AuthenticationTokenProcessingFilter authFilter() {
        return new AuthenticationTokenProcessingFilter();
    }

}

Answer 2

我找到了一个比上述简单得多的解决方案：

    @GetMapping
    public ResponseEntity getEndpoint(String someParam, HttpServletRequest request) {
        KeycloakAuthenticationToken principal = (KeycloakAuthenticationToken) request.getUserPrincipal();
        String userId = principal.getAccount().getKeycloakSecurityContext().getIdToken().getSubject();

        //....do something

        return new ResponseEntity(HttpStatus.OK);
    }

我认为您遇到的异常是因为您试图将getRequest().getUserPrincipal()类型的KeycloakPrincipal<KeycloakSecurityContext>强制转换为KeycloakAuthenticationToken，所以((KeycloakAuthenticationToken) getRequest().getUserPrincipal())可以工作。 / p>

Spring Keycloak：获取用户ID

2 个答案: