有userdetail和logincontroller。
userdetail从数据库获取用户。
用户详细信息

public class UserDetail implements UserDetailsService {

        private final
        UserServiceJpa userServiceJpa;

        public UserDetail(UserServiceJpa userServiceJpa) {
            this.userServiceJpa = userServiceJpa;
        }

        @Override
        public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {

            // Get user
            User user = userServiceJpa.findUserByEmail(email);

            if (user == null){
                throw new UsernameNotFoundException("There is no such user " + email);
            }

            return new org.springframework.security.core.userdetails.User(user.getEmail(),
                    user.getPassword(),
                    user.getEnabled(),
                    user.getAccount_non_expired(),
                    user.getCredentials_non_expired(),
                    user.getAccount_non_locked(),
                    getAuthorities());

        }

        private Collection<? extends GrantedAuthority> getAuthorities(){

            List<SimpleGrantedAuthority> authList = new ArrayList<>();
            authList.add(new SimpleGrantedAuthority("ROLE_USER"));
            authList.add(new SimpleGrantedAuthority("ROLE_ADMIN"));

            return authList;

        }

    }

登录控制器

@Controller
    public class LoginController {

        @GetMapping(value = "/login")
        public String login () {

            return "/login";
        }

    }

问题！如何在logincontroller中获取userdetail接收到的此用户？
我这样做是为了不重新连接到数据库。因此，我想知道如果用户被阻止了，他是如何被阻止的-enabled，accountnonexpired，credentialsnexpired，accountnonlocked