public void getCountyByCityId(string cityId) { if (string.IsNullOrEmpty(cityId)) { Response.Write("{\"success\":false,\"error\":\"参数错误!\"}"); } List <COUNTY> lst = RegionDal.getCountyByCityId(cityId); Response.Write("{\"success\":true,\"data\":" + JsonHelper.ObjectToJson(lst) + "}"); }