使用 VS2012 和 NetTcpBinding。从客户端调用 serviceContract 时出现以下错误 - 该服务托管在 IIS 中:
尝试序列化参数 CS.ServiceContracts.Zzzzzz.Common:GetZipCodesResult 时出错。InnerException 消息是 'Type 'System.DelegateSerializationHolder+DelegateEntry' 与数据协定名称 'DelegateSerializationHolder.DelegateEntry: http://schemas.datacontract.org/2004/07/System ' 不是预期的。考虑使用 DataContractResolver 或将任何静态未知的类型添加到已知类型列表中 - 例如,通过使用 KnownTypeAttribute 属性或将它们添加到传递给 DataContractSerializer 的已知类型列表中。有关更多详细信息,请参阅 InnerException。
这是我的服务合同:
[ServiceContract(SessionMode = SessionMode.Allowed, Namespace = "CS.ServiceContracts.Zzzzzz.Common",
Name = "IZzzzzzCommonService")]
public interface IZzzzzzCommonService
{
[OperationContract]
GetZipCodesResponse GetZipCodes(GetZipCodesRequest request);
}
这是我的数据合同:
[DataContract]
[Serializable]
public class GetZipCodesResponse : ResponseBase
{
[DataMember(IsRequired = true)]
public List<ZipCodes> ZipCodes { get; set; }
}
这是响应库:
[DataContract]
[Serializable]
[KnownType(typeof(GetZipCodesResponse)), XmlInclude(typeof(GetZipCodesResponse))]
public class ResponseBase
{
[DataMember(IsRequired = true)]
public int ResponseCode { get; set; }
[DataMember(IsRequired = false)]
public int ReasonCode { get; set; }
[DataMember(IsRequired = false)]
public string ReasonText { get; set; }
}
下面是 serviceContract 接口的实现:
public class ZzzzzzCommonService : IZzzzzzCommonService
{
public GetZipCodesResponse GetZipCodes(GetZipCodesRequest request)
{
var response = new GetZipCodesResponse();
try
{
response.ZipCodes = ZipCodes.GetCustom(request.ZipCode, request.City, request.State);
}
catch (Exception ex)
{
this.BuildExceptionResponse(response, ex);
}
return response; // I get to this line ok, but here is where the error occurs
}
}
这是我调用服务的客户端代码:
public void ZipCodes()
{
var endPoint = new EndpointAddress(
"net.tcp://localhost/CS.WebService.Zzzzzz.Common/ZzzzzzCommonService.svc");
var binding = new NetTcpBinding { TransferMode = TransferMode.Buffered, SendTimeout = TimeSpan.MaxValue, ReceiveTimeout = TimeSpan.MaxValue, MaxReceivedMessageSize = 100000000, MaxBufferSize = 100000000 };
using (var channel = new ChannelFactory<IZzzzzzCommonService>(binding, endPoint))
{
try
{
channel.Endpoint.Contract.SessionMode = SessionMode.Allowed;
var proxy = channel.CreateChannel();
var request = new GetZipCodesRequest();
request = new GetZipCodesRequest { ZipCode = "32701" };
response = proxy.GetZipCodes(request);
}
}
}
我已经调试了代码,我正在进入实体,并且数据集填充了适当的行,但是当它发送回数据集时,我得到了错误。
不知道我错过了什么。我相信我已经正确装饰了 serviceContract 和 dataContract 成员,所以不确定为什么它在序列化列表时遇到问题。