在什么情况下可以将自定义信息添加到userDetails中？

@Service
public class CustomUserDetailsService implements UserDetailsService {

    @Autowired
    private UserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userRepository.findByUsername(username);
        if (user == null) {
            throw new UsernameNotFoundException("User not found");
        }

        // 创建一个包含用户角色和权限的GrantedAuthority列表
        List<GrantedAuthority> authorities = new ArrayList<>();
        for (Role role : user.getRoles()) {
            authorities.add(new SimpleGrantedAuthority(role.getName()));
        }

        // 创建自定义的UserDetails对象，并将额外的用户信息添加到其中
        CustomUserDetails userDetails = new CustomUserDetails(user.getUsername(), user.getPassword(), authorities);
        userDetails.setFirstName(user.getFirstName());
        userDetails.setLastName(user.getLastName());
        userDetails.setEmail(user.getEmail());

        return userDetails;
    }
}