public static string GetOne(HttpContext context) { string id = context.Request.GetValExt("id"); if (string.IsNullOrEmpty(id)) throw new ArgumentNullException("id", "缺少参数id"); Where where = new Where(new Where.Item("ID", "=", id)); Model.User_Model userModel = Bll.User_Bll.GetOneUser(where, "*"); JsonTpl<Model.User_Model> jsonTpl = new JsonTpl<User_Model>() {code = SystemCode.Error, msg = "exception"}; if (userModel.ID > 0) { jsonTpl.data = userModel; jsonTpl.code = SystemCode.Success; jsonTpl.msg = "success"; } return jsonTpl.ToJson(); }