WCF尝试序列化未使用[DataMember]

时间:2016-07-04 09:32:16

标签: c# wcf datacontract datamember

鉴于以下DataContract:

[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,并使用[IgnoreDataMember]特别忽略受影响的成员。但不幸的是,这导致了同样的结果。

更新1

给定代码中的Lambda Expression只是我计划要做的一步。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。所以问题不能来自GameSession类型。

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);
}

AdapterService:

[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)
    { ... }
}

的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>

还有什么可能导致这个问题?

2 个答案:

答案 0 :(得分:1)

如果我尝试你的代码,序列化工作正常;反序列化失败了:

  

System.Runtime.Serialization.SerializationException:类型&#39; GameSession []&#39;的get-only集合。返回null值。输入流包含集合项,如果实例为null,则无法添加这些集合项。考虑在getter中初始化集合。

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以帮助我们确定问题,因为......它基本上有效。

答案 1 :(得分:0)

发现问题: 我正在使用XmlSerializer(IAdapterService归属于[XmlSerializerFormat]),这导致所有公共属性被序列化。

DataContractSerializer(XmlObjectSerializer)会考虑序列化过程的[DataMember]属性,而XmlSerializer只是忽略它们。

问题仍然存在,为什么[XmlIgnore]属性也不起作用。