SpringSecurity UsernamePasswordAuthenticationToken Sınıfı

Giriş
Şu satırı dahil ederiz

import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;

Hem AuthenticationProvider.authenticate() nesnesine parametre olarak geçilir, hem de bu metod tarafından sonuç olarak döndürülür.

constructor - username + password
Şöyle yaparız

@Service(value = "customAuth")
public class CustomAuthenticationProvider implements AuthenticationProvider {

  @Autowired
  public Storages storage;

  @Override
  @Transactional
  public Authentication authenticate(Authentication authentication)
  throws AuthenticationException {
    String login = authentication.getName();
    String password = authentication.getCredentials().toString();
    User user = storage.uSM.findByEmailAndPassword(login, password);
    if (user == null) {
      return null;
    } else {
      // Here use the user object to only check if the user exists in the database
      // if not null use his login ( principal ) and password
      return new UsernamePasswordAuthenticationToken(login, password);
    }
  }

  @Override
  public boolean supports(Class<?> authentication) {
    return authentication.equals(UsernamePasswordAuthenticationToken.class);
  }
}