'System.ServiceModel.Channels.ReceivedFault'无法序列化如何解决

Question

我有工作流服务。我还在该服务中使用工作流持久性。但是在 IIS 中部署工作流后，我从客户端向服务器上的日志文件中的工作流服务发出请求。我看到一条消息

The execution of the InstancePersistenceCommand named {urn:schemas-microsoft-com:System.Activities.Persistence/command}SaveWorkflow was interrupted by an error.InnerException Message: Type 'System.ServiceModel.Channels.ReceivedFault' cannot be serialized.
Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute.
If the type is a collection, consider marking it with the CollectionDataContractAttribute.  See the Microsoft .NET Framework documentation for other supported types.

我尝试研究这个异常，但我没有找到任何东西。

如何解决这个问题？或者让我知道上述异常的原因是什么？

Answer 1

System.ServiceModel.Channels.ReceivedFault 是不可序列化的内部 .NET 框架 class，因此很遗憾，您无法纠正实际的根本原因（即使 class 可序列化）。

您可能正在通过 WCF 调用外部服务，该服务出错，即抛出 System.ServiceModel.FaultException。 IIRC，那个 FaultException 对象深处的某个地方是对罪魁祸首的引用，一个 ReceivedFault 实例。

解决方法：捕获所有的FaultExceptions，把你需要知道的信息从FaultException转移到一个可序列化的异常中，然后抛出后者：

try
{
    CallService();
}
catch (FaultException ex) 
{
    // Gather all info you need from the FaultException
    // and transport it in a serializable exception type.
    // I'm just using Exception and the message as an example.
    throw new Exception(ex.Message);
}

'System.ServiceModel.Channels.ReceivedFault'无法序列化如何解决

How to fix 'System.ServiceModel.Channels.ReceivedFault' cannot be serialized

wcf

workflow

workflowservice

workflow-foundation-4