java - Spring key 斗篷 : Get User ID

Question

我开发了一个 Spring Boot Web 服务并使用 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联系起来。

目前我将用户名与数据一起存储。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？

我尝试通过这个获取 SecurityContext:

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

但是我得到一个错误:

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？什么东西少了？

谢谢!

Answer 1

我找到了一个比上面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);
    }

我认为你遇到的异常是因为你试图转换 getRequest().getUserPrincipal()至 KeycloakPrincipal<KeycloakSecurityContext>而它的类型是 KeycloakAuthenticationToken , 所以 ((KeycloakAuthenticationToken) getRequest().getUserPrincipal())会工作。