WCF尝试序列化没有属性为[DataMember]的成员

本文关键字:DataMember 成员 属性 序列化 WCF | 更新日期: 2023-09-27 17:54:40

给定以下数据合约:

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

我仍然得到错误消息,GetGameSessionHistory是不可序列化的,由于IEnumerable接口。

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]属性并特别忽略[IgnoreDataMember]受影响的成员的方法。但不幸的是,这导致了同样的结果。

更新1

给定代码中的Lambda表达式只是我计划做的一个步骤。当使用以下DataContract时,问题仍然相同:

[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。所以问题不可能来自于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)
    { ... }
}

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?

WCF尝试序列化没有属性为[DataMember]的成员

如果我尝试你的代码,序列化工作得很好;反序列化失败,使用:

System.Runtime.Serialization。SerializationException:类型'GameSession[]'的get-only集合返回空值。如果实例为空,则输入流包含不能添加的集合项。考虑在getter中初始化集合。

,这是我所期望的,因为它没有办法给GameSessions赋值。如果我加一个set。一切工作。下面是完整的工作代码:

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
{
}
我认为你可能需要添加更多的信息来帮助我们识别问题,因为……

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

DataContractSerializer (XmlObjectSerializer)将考虑序列化过程的[DataMember]属性,而XmlSerializer则直接忽略它们。

问题仍然存在,为什么[XmlIgnore]属性不能正常工作。