Question

我有一个使用NHibernate与MySQL数据库链接的项目。突然之间，主页开始抛出以下错误：

Input string was not in a correct format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[FormatException: Input string was not in a correct format.]
   System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +14281985
   System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +305
   System.SByte.Parse(String s, NumberStyles style, NumberFormatInfo info) +41
   MySql.Data.Types.MySqlByte.MySql.Data.Types.IMySqlValue.ReadValue(MySqlPacket packet, Int64 length, Boolean nullVal) +182
   MySql.Data.MySqlClient.NativeDriver.ReadColumnValue(Int32 index, MySqlField field, IMySqlValue valObject) +376
   MySql.Data.MySqlClient.ResultSet.ReadColumnData(Boolean outputParms) +105
   MySql.Data.MySqlClient.ResultSet.NextRow(CommandBehavior behavior) +263
   MySql.Data.MySqlClient.MySqlDataReader.Read() +98
   NHibernate.Driver.NHybridDataReader.Read() +28
   NHibernate.Impl.MultiCriteriaImpl.GetResultsFromDatabase(IList results) +1363

    [HibernateException: Error executing multi criteria : [SELECT count(distinct this_.ID) as y0_ FROM `PropertyItem` this_ WHERE (this_._Temporary_Flag = ?p0 or this_._Temporary_Flag is null) and (this_._Deleted = ?p1 or this_._Deleted is null) and this_.Featured = ?p2 and this_.Activated = ?p3 and this_.ListingStatus = ?p4 and this_.HideListingFromWeb = ?p5 and this_.HideListingFromPublic = ?p6;
SELECT this_.ID as ID53_1_, this_.FullPropertyDescription as FullProp2_53_1_, this_.HeaderTagText as HeaderTa3_53_1_, this_.PropertyCategory as Property4_53_1_, this_.PropertyStatus as Property5_53_1_, this_.ShortDescription as ShortDes6_53_1_, this_.PropertyPrice as Property7_53_1_, this_.RefCode as RefCode53_1_, this_.Featured as Featured53_1_, this_.Title as Title53_1_, this_.StarRating as StarRating53_1_, this_.AmountOfBedrooms as AmountO12_53_1_, this_.Activated as Activated53_1_, this_.PropertyPlotSize as Propert14_53_1_, this_.PropertyFloorArea as Propert15_53_1_, this_.AmountOfBathrooms as AmountO16_53_1_, this_.AmountOfGarages as AmountO17_53_1_, this_.VirtualTourURL as Virtual18_53_1_, this_.RentInterval as RentInt19_53_1_, this_.HolidayPriceDescription as Holiday20_53_1_, this_.Exclusive as Exclusive53_1_, this_.FacebookImageFilename as Faceboo22_53_1_, this_.MainImageFilename as MainIma23_53_1_, this_.IsFromXMLFile as IsFromX24_53_1_, this_.PriceDaily as PriceDaily53_1_, this_.FeatureValuesForSearch as Feature26_53_1_, this_._LastEditedOn as column27_53_1_, this_.IsExclusive as IsExclu28_53_1_, this_.HidePriceFromPublic as HidePri29_53_1_, this_.ListingStatus as Listing30_53_1_, this_.HideListingFromWeb as HideLis31_53_1_, this_.LastXmlImportInfo as LastXml32_53_1_, this_.HideListingFromPublic as HideLis33_53_1_, this_._Temporary_LastUpdOn as column34_53_1_, this_._Temporary_Flag as column35_53_1_, this_._Deleted as column36_53_1_, this_._DeletedOn as column37_53_1_, this_.Priority as Priority53_1_, this_.LocalityID as LocalityID53_1_, this_.PropertyTypeID as Propert40_53_1_, this_._LastEditedByID as column41_53_1_, this_.OfficeNameID as OfficeN42_53_1_, this_.SalesAgentID as SalesAg43_53_1_, location2_.ID as ID36_0_, location2_.ReferenceID as Referenc2_36_0_, location2_.Title as Title36_0_, location2_.LocationType as Location4_36_0_, location2_._Temporary_LastUpdOn as column5_36_0_, location2_._Temporary_Flag as column6_36_0_, location2_._Deleted as column7_36_0_, location2_._DeletedOn as column8_36_0_, location2_.Priority as Priority36_0_, location2_.ParentLocationID as ParentL10_36_0_ FROM `PropertyItem` this_ left outer join `Location` location2_ on this_.LocalityID=location2_.ID WHERE (this_._Temporary_Flag = ?p7 or this_._Temporary_Flag is null) and (this_._Deleted = ?p8 or this_._Deleted is null) and this_.Featured = ?p9 and this_.Activated = ?p10 and this_.ListingStatus = ?p11 and this_.HideListingFromWeb = ?p12 and this_.HideListingFromPublic = ?p13 and this_.ID in (?p14, ?p15, ?p16, ?p17, ?p18, ?p19, ?p20, ?p21);]]
       Classes.Search.DatabaseSearcher.GetSearchInDatabase() 
       System.Web.UI.Control.LoadRecursive() +71
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.BasePartialCachingControl.LoadRecursive() +143
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.Control.LoadRecursive() +190
       System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178

是否可以确定导致问题的行？结果数据集非常大，很难逐一完成。

Answer 1

您的错误消息中的一些观察结果：

NHibernate正在尝试将字符串转换为数字，但失败了。因此，您应该关注已映射到varchar属性的int（或类似）列。查看您的NHibernate映射和CREATE TABLE语句，找出哪些列可能是问题。
SELECT count(...)无法返回字符串，因此问题必须在其他地方。
看起来查询已被截断（....），并且您正在使用MultiCriteria，因此我怀疑此批次中存在第二个或第三个SELECT查询实际上导致了问题。关注这些查询的SELECT子句中列出的列。

一旦确定了哪些列可能有罪，您就可以使用简单的SELECT查询来识别哪些行包含非整数文本：How do I check to see if a value is an integer in MySQL?

确定哪个数据库行导致“输入字符串格式不正确”

1 个答案: