如何修复@PreAuthorize中的SpEL表达式？

@PreAuthorize("hasRole('ADMIN')")
public void deleteUser(Long userId) {
    // 删除用户的逻辑
}

@PreAuthorize("hasRole('ADMIN'")

@PreAuthorize("#userId == authentication.principal.userId")
public void updateUser(Long userId) {
    // 更新用户的逻辑
}

logging.level.org.springframework.security=DEBUG

@SpringBootTest
public class SecurityTests {

    @Autowired
    private ApplicationContext context;

    @Test
    public void testPreAuthorize() {
        MyService myService = context.getBean(MyService.class);
        SecurityContextHolder.getContext().setAuthentication(new TestingAuthenticationToken("user", "password", "ROLE_USER"));
        assertThrows(AccessDeniedException.class, () -> myService.deleteUser(1L));
    }
}

@Service
public class UserService {

    @PreAuthorize("hasRole('ADMIN')")
    public void deleteUser(Long userId) {
        // 删除用户的逻辑
    }
}

@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/admin/**").hasRole("ADMIN")
            .anyRequest().authenticated()
            .and().httpBasic();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
            .withUser("admin").password("{noop}password").roles("ADMIN");
    }
}