@GET
@Path("loginob")
@Produces("application/json")
public List<Persona> sendLoginObject(@QueryParam("cedula")String cedula,@QueryParam("clave")String clave){
    String k=p.generaHashMD5(clave);
    List<Persona> p=dao.getLoginList(cedula, k);
    return p;
}

getUsers4(cedu:String,pass:String) {
    return new Promise(resolve => {
      this.http.get('/tracing-project/'+'srv/login/loginob?cedula='+cedu+'&clave='+pass).subscribe(data => {
        resolve(data);
      }, err => {
           console.log(err);
      });
    });
  }