http500 Exception: ids for this class must be manually assigned before calling save():

hello, i have this error

and this is my action page

public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		AjoutservForm ajoutservForm = (AjoutservForm) form;// TODO Auto-generated method stub
		String map="Echec";
		String nom = ajoutservForm.getNom_serv();
		String type1 = ajoutservForm.getType();
		ServeurDAO daos = new ServeurDAO() ;
		TypeservDAO dao_t = new TypeservDAO();
		Serveur serv = new Serveur();
		Typeserv types = new Typeserv();
		List l_serv = daos.findByNomServ(nom);
		System.out.println("serv size  = "+l_serv.size());
		List l_type = dao_t.findByLibelleType(type1);
		System.out.println("type size  = "+l_type.size());
		if(l_serv.size()!= 0|| l_type.size()!=0)
		{
		map= "Echec";
		}
		else
		{
		serv = new Serveur();
		serv.setNomServ(nom);
		serv.setIpServ(ajoutservForm.getIp_serv());
		serv.setPortServ(ajoutservForm.getPort_serv());
		daos.save(serv);
		types.setIdServ(serv.getIdServ());
		types.setLibelleType(type1);
		types.setDescription(ajoutservForm.getDesc());
		dao_t.save(types);
		map="Succes";
		}
		return mapping.findForward(map);
	}
}

i wish you will help me thank you

Hi,

Seems there is problem in cofiguration of the primary key.Please check the .hbm file where you have decalre the primary key. Post code for the same. Also try assign the hard code value to
primary key and then call save() check does it work or not?

Regards
Jatan