.Net 调用 WCF 端点错误 - 加载 OperationContract 属性时出错

Question

如标题所示，我创建了 .netcore app(v3.1)，并尝试在使用 net.tcp 端口调用 wcf 时调试错误。

我添加了对 System.ServiceModel 的引用

ChannelFactory出现错误：

factory = new ChannelFactory<T>(binding, ea);

错误： 在“IService”类型的方法“GetList”上加载属性“OperationContractAttribute”时出错。有关详细信息，请参阅 InnerException。

内部异常：“无法从程序集 'System.ServiceModel.Web，版本 = 4.0.0.0，文化 = 中性，PublicKeyToken = 31bf3856ad364e35' 加载类型 'System.ServiceModel.Web.WebGetAttribute'。”：“System.ServiceModel .Web.WebGetAttribute"

编辑 堆栈跟踪：

"   at System.ServiceModel.Description.ServiceReflector.GetCustomAttributes(ICustomAttributeProvider attrProvider, Type attrType, Boolean inherit)\r\n   at System.ServiceModel.Description.ServiceReflector.GetCustomAttributes(ICustomAttributeProvider attrProvider, Type attrType)\r\n   at System.ServiceModel.Description.ServiceReflector.GetSingleAttribute[T](ICustomAttributeProvider attrProvider)\r\n   at System.ServiceModel.Description.TypeLoader.CreateOperationDescription(ContractDescription contractDescription, MethodInfo methodInfo, MessageDirection direction, ContractReflectionInfo reflectionInfo, ContractDescription declaringContract)\r\n   at System.ServiceModel.Description.TypeLoader.CreateOperationDescriptions(ContractDescription contractDescription, ContractReflectionInfo reflectionInfo, Type contractToGetMethodsFrom, ContractDescription declaringContract, MessageDirection direction)\r\n   at System.ServiceModel.Description.TypeLoader.CreateContractDescription(ServiceContractAttribute contractAttr, Type contractType, Type serviceType, ContractReflectionInfo& reflectionInfo, Object serviceImplementation)\r\n   at System.ServiceModel.Description.TypeLoader.LoadContractDescriptionHelper(Type contractType, Type serviceType, Object serviceImplementation)\r\n   at System.ServiceModel.Description.TypeLoader.LoadContractDescription(Type contractType)\r\n   at System.ServiceModel.ChannelFactory`1.CreateDescription()\r\n   at System.ServiceModel.ChannelFactory.InitializeEndpoint(Binding binding, EndpointAddress address)\r\n   at System.ServiceModel.ChannelFactory`1..ctor(Binding binding, EndpointAddress remoteAddress)\r\n   at ...."

Answer 1

此错误专门讨论了程序集。 添加对 System.ServiceModel.Web 的引用，这应该可以解决问题。