WCF 尝试序列化未归因于 [DataMember] 的成员

Question

给定以下数据合同：

[DataContract]
public class GetGameSessionHistory : ValueBaseCasinoIT
{
    [DataMember]
    public GameSession[] GameSessions => GameSessionsValue.ToArray<GameSession>();

    public IEnumerable<GameSession> GameSessionsValue { get; set; }
}

由于 IEnumerable 接口，我仍然收到 GetGameSessionHistory 不可序列化的错误消息。

System.NotSupportedException: Cannot serialize member GetGameSessionHistory.GameSessionsValue of type System.Collections.Generic.IEnumerable`1[[GameSession, Common, Version=3.45.0.11, Culture=neutral, PublicKeyToken=null]] because it is an interface.

我还尝试了删除整个 [DataContract] 属性的方法，并专门忽略了带有 [IgnoreDataMember] 的受影响的成员。但不幸的是，这导致了同样的结果。

更新 1

给定代码中的 Lambda 表达式只是我计划执行的一个步骤。使用以下 DataContract 时问题仍然存在：

[DataContract]
public class GetGameSessionHistory : ValueBaseCasinoIT
{
    [DataMember]
    public GameSession[] GameSessions { get; set; }

    public IEnumerable<GameSession> GameSessionsValue { get; set; }
}

删除 IEnumerable 时，消息消失。所以问题不可能出在GameSession类型上。

目前我正在使用 XmlSerializer。

数据用于以下服务：

IAdapterService:

[ServiceContract, XmlSerializerFormat(Style = OperationFormatStyle.Rpc, Use = OperationFormatUse.Encoded), DispatchByBodyBehavior]
public interface IAdapterService
{
    [OperationContract(Name = "GetGameSessionHistoryRequest", Action = ""), DispatchBodyElement("GetGameSessionHistoryRequest", "...")]
    GetGameSessionHistory GetGameSessionHistory(AuthenticationToken authenticationToken, string playerId, DateTime fromDate, DateTime toDate);
}

适配器服务：

[SoapDocumentService(SoapBindingUse.Literal, RoutingStyle = SoapServiceRoutingStyle.RequestElement)]
[ServiceBehavior(AddressFilterMode = AddressFilterMode.Any)]
public class AdapterService : IAdapterService
{
    public GetGameSessionHistory GetGameSessionHistory(AuthenticationToken authenticationToken, string playerId, DateTime fromDate, DateTime toDate)
    { ... }
}

Web.config:

<basicHttpBinding>
    <binding name="SoapBinding">
        <security mode="None"/>
        <readerQuotas maxDepth="4000" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="32768"/>
    </binding>
</basicHttpBinding>

<service name="...svc.AdapterService" behaviorConfiguration="svcBehavior" >
    <endpoint binding="basicHttpBinding" bindingConfiguration="SoapBinding" contract="...IAdapterService" name="AdapterSoapBinding" behaviorConfiguration="withMessageInspector"/>
</service>

还有什么可能导致此问题？

Answer 1

如果我尝试你的代码，序列化工作正常；反序列化失败：

System.Runtime.Serialization.SerializationException: The get-only collection of type 'GameSession[]' returned a null value. The input stream contains collection items which cannot be added if the instance is null. Consider initializing the collection in the getter.

这是我所期望的，因为它无法为 GameSessions 赋值。如果我添加 set... 一切正常。这是完整的工作代码：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;

class Program
{
    static void Main()
    {
        var ser = new DataContractSerializer(typeof(GetGameSessionHistory));
        using (var ms = new MemoryStream())
        {
            var orig = new GetGameSessionHistory { GameSessionsValue =
                new List<GameSession>() { new GameSession { } } };
            ser.WriteObject(ms, orig);
            ms.Position = 0;
            var clone = (GetGameSessionHistory)ser.ReadObject(ms);
            Console.WriteLine(clone?.GameSessionsValue.Count()); // prints 1
        }
    }

}
[DataContract]
public class GetGameSessionHistory : ValueBaseCasinoIT
{
    [DataMember]
    public GameSession[] GameSessions
    {
        get { return GameSessionsValue?.ToArray(); }
        set { GameSessionsValue = value; }
    }
    //[DataMember] // original version; fails with The get-only collection of type
                   // 'GameSession[]' returned a null value.
    //public GameSession[] GameSessions => GameSessionsValue?.ToArray<GameSession>();

    public IEnumerable<GameSession> GameSessionsValue { get; set; }
}

[DataContract]
public class ValueBaseCasinoIT
{
}

[DataContract]
public class GameSession
{
}

我认为您可能需要添加更多信息来帮助我们确定问题，因为...它基本上有效。

Answer 2

发现问题：我正在使用 XmlSerializer（IAdapterService 归因于 [XmlSerializerFormat]），它导致所有 public 属性被序列化。

DataContractSerializer (XmlObjectSerializer) 会考虑序列化过程的 [DataMember] 属性，而 XmlSerializer 会简单地忽略它们。

问题仍然存在，为什么 [XmlIgnore] 属性不能正常工作。

WCF 尝试序列化未归因于 [DataMember] 的成员

WCF tries to serialize members that are not attributed with [DataMember]

c#

wcf

datacontract

datamember