public string getSimpleDataList(string financePageJson, string start_date, string stop_date)
        {
            //分页对象
            FinancePage <SimpleData> financePage = null;

            try
            {
                //创建service层实例
                simpleDataService = new SimpleDataService();
                //处理json
                financePage = FinanceJson.getFinanceJson().toObject <FinancePage <SimpleData> >(financePageJson);
                //获取处理过的分页对象
                financePage = simpleDataService.getSimpleDataList(financePage, start_date, stop_date);

                return(FinanceResultData.getFinanceResultData().success(200, financePage, "成功"));
            }
            catch (InvalidOperationException ex)
            {
                //身份验证不通过
                return(FinanceResultData.getFinanceResultData().fail(401, null, ex.Message));
            }
            catch (Exception ex)
            {
                //未知的错误
                return(FinanceResultData.getFinanceResultData().fail(500, null, "未知的错误"));
            }
        }