public string addSimpleData(string simpleDataJson)
        {
            try
            {
                //创建service层实例
                simpleDataService = new SimpleDataService();
                //处理json
                SimpleData simpleData = FinanceJson.getFinanceJson().toObject <SimpleData>(simpleDataJson);

                if (simpleDataService.newSimpleData(simpleData))
                {
                    return(FinanceResultData.getFinanceResultData().success(200, null, "新增成功"));
                }
                else
                {
                    return(FinanceResultData.getFinanceResultData().fail(500, null, "新增失败"));
                }
            }
            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"));
            }
        }