Получение данных пользователя из БД

package home.david.sfl.service;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.stereotype.Service;
 
@Service
public class SecurityServiceImpl implements SecurityService {
 
    @Autowired
    private AuthenticationManager authenticationManager;
 
    @Autowired
    private UserDetailsService userDetailsService;
 
    @Override
    public String findLoggedByUserName() {
        Object userDetalis = SecurityContextHolder.getContext().getAuthentication().getDetails();
        Object userDetalisRole = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        if (userDetalis instanceof UserDetailsServiceImpl) {
            return ((UserDetails) userDetalis).getUsername();
        }
        return null;
    }
}

package home.david.sfl.service;
 
import home.david.sfl.dao.UserDao;
import home.david.sfl.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.transaction.annotation.Transactional;
 
import java.util.HashSet;
import java.util.Set;
 
public class UserDetailsServiceImpl implements UserDetailsService {
 
    @Autowired
    private UserDao userDao;
 
    @Override
    @Transactional (readOnly = true)
    public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
        User user = userDao.findByUserName(userName);
 
        Set<GrantedAuthority> grantedAuthorities = new HashSet<>();
 
        grantedAuthorities.add(new SimpleGrantedAuthority(user.getRole().name()));
 
        return new org.springframework.security.core.userdetails.User(user.getUserName(), user.getPasswordHash(), grantedAuthorities);
    }
}