无法从Spring Security 5获得Auth登录

Question

在spring boot 2 m6上创建一个简单的弹簧安全配置

@Configuration
@EnableWebFluxSecurity
@EnableReactiveMethodSecurity
public class SecurityConfig {


    @Bean
    public ReactiveUserDetailsService userDetailsRepository() {

        UserDetails user = User.withDefaultPasswordEncoder()
                .username("test")
                .password("test")
                .roles("USER")
                .build();
        return new MapReactiveUserDetailsService(user);
    }

    @Bean
    SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http) throws Exception {
        return http.csrf()
                   .disable()
                   .authorizeExchange()
                   .anyExchange().authenticated()
                   .and()
                   .httpBasic().and()
                   .build();
    }

但是当我在authenfication之后尝试在处理程序请求中获取身份验证对象时，我总是得到null

ReactiveSecurityContextHolder.getContext().block().getAuthentication()

当我尝试登录时

public Mono<ServerResponse> checkStatus(ServerRequest request) {
        System.out.println(request.principal().block());

我也是空的

问题出在哪里？