在WCF中使用IErrorHandler的CommunicationException

Question

我正在使用IErrorHandler为我的WCF服务实现一个全局错误处理程序。我设置了一个抛出异常进行测试的伪服务，但我一直得到一个CommunicationException而不是FaultException (异常消息是“底层连接已关闭:连接意外关闭”)。相关代码如下：

IErrorHandler实现：

    public bool HandleError(Exception error)
    {
        return true;
    }

    public void ProvideFault(Exception error, System.ServiceModel.Channels.MessageVersion version, ref System.ServiceModel.Channels.Message fault)
    {
        if (!(error is FaultException))
        {
            MessageFault msgFault = null;

            FaultException<string> fex = new FaultException<string>("General Error");

            msgFault = fex.CreateMessageFault();

            fault = Message.CreateMessage(version, msgFault, string.Empty);
        }

    }

有什么想法吗？

谢谢，贡萨洛

Answer 1

试试这个：

MessageFault msgFault = null;
FaultException<string> fex = new FaultException<string>("General Error");
msgFault = MessageFault.CreateFault(new FaultCode("Sender"), fex.Reason, fex, new NetDataContractSerializer());
fault = Message.CreateMessage(version, msgFault, string.Empty);

Answer 2

这是可行的：

FaultException newEx = new FaultException();
MessageFault msgFault = newEx.CreateMessageFault();
fault = Message.CreateMessage(version, msgFault, newEx.Action);

可在此处找到：

http://blogs.msdn.com/b/pedram/archive/2008/01/25/wcf-error-handling-and-some-best-practices.aspx