spring boot oauth2我可以在UserDetailsS​​ervice中获取客户端信息

Question

public class UserService implements UserDetailsService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        SecurityContext context = SecurityContextHolder.getContext();
        Authentication a = SecurityContextHolder.getContext().getAuthentication();

        return userMapper.findUserByUsername(username);
    }

    public void create(User user) {
        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
        user.setPassword(encoder.encode(user.getPassword()));
        userMapper.insert(user);
    }
}

我想获取客户端类型当我在loadUserInfo中，我在SecurityContextHolder中找到，但是，我仍然找到了客户端类型，我该如何编写这段代码？ 感谢您的评论