Spring Security中的REST API调用如何返回401？

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private CustomAuthenticationEntryPoint authenticationEntryPoint;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .exceptionHandling()
                .authenticationEntryPoint(authenticationEntryPoint)
                .and()
            // 其他配置...
    }
}

@Component
public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
    }
}