public string updSimpleData(string newSimpleData)
 {
     try
     {
         //创建service层实例
         simpleDataService = new SimpleDataService();
         //处理json
         SimpleData simpleData = FinanceJson.getFinanceJson().toObject <SimpleData>(newSimpleData);
         //修改操作
         if (simpleDataService.updSimpleData(simpleData))
         {
             return(FinanceResultData.getFinanceResultData().success(200, null, "修改成功"));
         }
         else
         {
             return(FinanceResultData.getFinanceResultData().fail(500, null, "修改失败"));
         }
     }
     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"));
     }
 }