Question

此代码在我的本地系统中运行良好，但在部署后访问站点时会引发以下错误。此会话状态未在应用程序中的任何位置声明。请帮助我解决这个问题。

无法序列化会话状态。在“StateServer”和“SQLServer”模式下，ASP.NET将序列化会话状态对象，因此不允许使用不可序列化的对象或MarshalByRef对象。如果自定义会话状态存储在“自定义”模式下完成类似的序列化，则适用相同的限制。描述：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中的起源位置的更多信息。

Exception Details: System.Web.HttpException: Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.

来源错误：

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.

堆栈追踪：

[SerializationException: Type 'System.Data.DataView' in Assembly 'System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable.]
   System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +7736011
   System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +258
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +111
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) +161
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) +51
   System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +410
   System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +134
   System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1577

[HttpException (0x80004005): Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.]
   System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1662
   System.Web.SessionState.SessionStateItemCollection.WriteValueToStreamWithAssert(Object value, BinaryWriter writer) +34
   System.Web.SessionState.SessionStateItemCollection.Serialize(BinaryWriter writer) +606
   System.Web.SessionState.SessionStateUtility.Serialize(SessionStateStoreData item, Stream stream) +239
   System.Web.SessionState.SessionStateUtility.SerializeStoreData(SessionStateStoreData item, Int32 initialStreamSize, Byte[]& buf, Int32& length) +72
   System.Web.SessionState.SqlSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) +116
   System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) +560
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Answer 1

如果部署到单个服务器，只需确保将SessionMode设置为InProc。部署期间可能已丢失该设置。

当您想要使用多个服务器时，您必须确保放入Session的所有内容都是可序列化的。

从错误中，您现在正在会话中存储System.Data.DataView。我不确定这是否明智。

Answer 2

由于您使用的是进程外会话数据存储，因此这需要您添加到Session的任何类型都是Serializable。这意味着您无法向Session添加任何类并希望它能够顺利运行。许多第三方类和BCL类是不可序列化的，因此不能直接使用。

Answer 3

这是因为您使用StateServer或Sql Server模式存储Session对象而DataView不可序列化。正如Henk建议的那样，如果你不希望在asp.net工作进程被回收并且你的所有Session对象都丢失时你不想要惊喜，我宁愿把可序列化的对象放在Session中，而不是仅仅使用InProc状态服务器。

部署ASP.Net站点时“无法序列化会话状态”错误

3 个答案: