.NET 4.5 でのみ発生するシリアライゼーションの問題があります。同じコードが .NET 4 でも正常に動作します。継承された型をいくつかのフィールドでシリアライズしようとしています。基本クラスと継承されたクラスの両方がSerializableAttributeでマークされています。Web サービスのクライアント側で、サーバーにMethodAccessExceptionがあったという例外が発生します。サーバー自体は例外をスローしません。クライアントのシリアル化プロセスに問題があるようです。.4.5 ではなく .NET 4 でコンパイルしていることに注意することが重要です。
更新: ISerailizeを実装し、"Value" プロパティを無視した後、プログラムは正しく実行されましたが、このフィールドのシリアル化をあきらめなければならなかったことを意味します。
どんな助けでも大歓迎です。ありがとう、オマー
例外の詳細:
System.Web.Services.Protocols.SoapException occurred
HResult=-2146233087
Message=System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.InvalidOperationException: There was an error generating the XML document. ---> System.MethodAccessException: Attempt by method 'Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write88_DeviceSiteTypeInfo(System.String, System.String, IOSIGHT.Info.DeviceSiteTypeInfo, Boolean, Boolean)' to access method 'IOSIGHT.Info.DeviceSiteTypeInfo.get_Value()' failed.
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write88_DeviceSiteTypeInfo(String n, String ns, DeviceSiteTypeInfo o, Boolean isNullable, Boolean needType)
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write1310_GetSiteTypesResponse(Object[] p)
at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer2089.Serialize(Object objectToSerialize, XmlSerializationWriter writer)
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
at System.Web.Services.Protocols.SoapServerProtocol.WriteReturns(Object[] returnValues, Stream outputStream)
at System.Web.Services.Protocols.WebServiceHandler.WriteReturns(Object[] returnValues)
at System.Web.Services.Protocols.WebServiceHandler.Invoke()
--- End of inner exception stack trace ---
Source=System.Web.Services
Actor=""
Lang=""
Node=""
Role=""
StackTrace:
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at IOSIGHT.BLL.localhost.IOSightWS.GetSiteTypes() in C:\IOSIGHT\Common\IOSight.BLL\Web References\localhost\Reference.cs:line 25019
at IOSIGHT.BLL.TypeBankBLL.GetSiteTypes() in C:\IOSIGHT\Common\IOSight.BLL\Entities\TypeBanksBLL.cs:line 477
InnerException:
基本クラスと継承クラスのコードが添付されています: Base :
[Serializable()]
public class TypeBankInfo
{
#region "Fields"
private int _id = 0;
private string _Name = string.Empty;
private string _description = string.Empty;
private object _value = null;
#endregion
#region "Constructors"
public TypeBankInfo()
{
}
public TypeBankInfo(int ID, string name)
: this()
{
this._id = ID;
this.Name = name;
}
public TypeBankInfo(int ID, string name, string description)
: this(ID, name)
{
this._description = description;
this._value = Value;
}
public TypeBankInfo(int ID, string name, string description, object value)
: this(ID, name, description)
{
this._value = value;
}
#endregion
#region "Properties"
public virtual string Name
{
get
{
return this._Name;
}
set
{
this._Name = value;
}
}
public virtual string Description
{
get
{
return _description;
}
set
{
_description = value;
}
}
public virtual int ID
{
get
{
return _id;
}
set
{
_id = int.Parse(value.ToString());
}
}
public virtual object @Value
{
get
{
return this._value;
}
set
{
this._value = value;
}
}
#endregion
}
継承:
[Serializable()]
public class DeviceSiteTypeInfo : TypeBankInfo, ISerializable
{
#region "Fields"
private EntityTypeEnum _entitytype = EntityTypeEnum.Site;
private DeviceIOTemplateInfo[] _IOTemplates;
private CaptionInfo[] _Captions;
private int _parentClassID;
#endregion
#region "Constructors"
public DeviceSiteTypeInfo()
{
}
public DeviceSiteTypeInfo(int id, string name)
: base(id, name)
{
}
public DeviceSiteTypeInfo(int id, string name, string description)
: base(id, name, description)
{
}
// The special constructor is used to deserialize values.
public DeviceSiteTypeInfo(SerializationInfo info, StreamingContext context)
{
//parent fields
ID = (int)info.GetValue("_id", typeof(int));
Name = (string)info.GetValue("_Name", typeof(string));
Description = (string)info.GetValue("_description", typeof(string));
//my fields
_entitytype = (EntityTypeEnum)info.GetValue("_entitytype", typeof(EntityTypeEnum));
_IOTemplates = (DeviceIOTemplateInfo[])info.GetValue("_IOTemplates", typeof(DeviceIOTemplateInfo[]));
_Captions = (CaptionInfo[])info.GetValue("_Captions", typeof(CaptionInfo[]));
_parentClassID = (int)info.GetValue("_parentClassID", typeof(int));
}
#endregion
#region "Properties"
public EntityTypeEnum EntityTypeID
{
get
{
return this._entitytype;
}
set
{
this._entitytype = value;
}
}
[EditorBrowsable(EditorBrowsableState.Never), Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
private new object Value
{
get
{
return base.Value;
}
set
{
base.Value = value;
}
}
public CaptionInfo[] Captions
{
get
{
return this._Captions;
}
set
{
this._Captions = value;
}
}
public DeviceIOTemplateInfo[] IOTemplates
{
get
{
return this._IOTemplates;
}
set
{
this._IOTemplates = value;
}
}
public int ParentClassID
{
get
{
return this._parentClassID;
}
set
{
this._parentClassID = value;
}
}
#endregion
#region Methods
/// <summary>
/// Called on serialization
/// </summary>
/// <param name="info">serialiation info</param>
/// <param name="context">context</param>
public void GetObjectData(SerializationInfo info, StreamingContext context)
{
// parent fields
info.AddValue("_id", ID, typeof(int));
info.AddValue("_Name", Name, typeof(string));
info.AddValue("_description", Description, typeof(string));
//my fields
info.AddValue("_entitytype", _entitytype, typeof(EntityTypeEnum));
info.AddValue("_IOTemplates", _IOTemplates, typeof(DeviceIOTemplateInfo[]));
info.AddValue("_Captions", _Captions, typeof(CaptionInfo[]));
info.AddValue("_parentClassID", _parentClassID, typeof(int));
}
#endregion
}