WCF FaultException [英] WCF FaultException

问题描述

在构建WCF服务时，如果我不包含我的FaultException合同，则可以在包含所有成员的客户端上创建WCF服务引用.在Reference.cs文件中.

When building a WCF service, if I don't include my contract for the FaultException in the service, I'm able to create a WCF service reference on the client with all of the members included in the Reference.cs file.

如果我包括我的FaultException合同，则会发生两件事.

If I include my FaultException contract, two things happen.

1. 在WCF测试客户端中，合同名称(CreateFaultMessage)旁边有一个红色的"X"

当我创建WCF服务引用时，并非所有成员都是包含在中.

When I create the WCF service reference, not all of the members are included in the Reference.cs file.

由于我不是WCF专家，我希望有人能够告知我在创建FaultException合同方面我做错了什么.

下面是我的合同在界面中的代码声明.

Below, is the code declaration of my contract in the interface.

[OperationContract]
        [FaultContractAttribute(typeof(LogEventArgs), ProtectionLevel = ProtectionLevel.None)]
        Exception CreateFaultMessage(Exception ex, string method);

下面是实现接口的类中的方法.在PostTransmissionRecord方法的catch块中注意对CreateFaultMessage方法的调用.

Below, are methods in the class which implement the interface. Notice the call to the CreateFaultMessage method in the catch block of the PostTransmissionRecord method.

public bool PostTransmissionRecord(TransmissionRecord transmissionRecord)
{
    bool blnUpdated = false;

    try
    {
        blnUpdated = TransmissionRecordGateway.InsertData(transmissionRecord);
        LogMessage.WriteEventLog("Transmission records updated successfully", "Ryder.ShopProcessService.SOA", 3, null);

        return blnUpdated;
    }
    catch (Exception ex)
    {
        LogMessage.WriteEventLog("Class: ShopProcessService" + CrLf + "Method: PostTransmissionRecord" + CrLf + "Error: " + ex.Message + CrLf + "InnerException: " + ex.InnerException + CrLf + "Source: " + ex.Source + CrLf + "StackTrace: " + ex.StackTrace, "Ryder.ShopProcessService.SOA", 1, null);
        IssueRemedyTicket("Class: ShopProcessService" + CrLf + "Method: PostTransmissionRecord" + CrLf + "Error: " + ex.Message + CrLf + "InnerException: " + ex.InnerException + CrLf + "Source: " + ex.Source + CrLf + "StackTrace: " + ex.StackTrace);
        CreateFaultMessage(ex, "UpdateSearchInventory");
        return blnUpdated;
    }
}

public Exception CreateFaultMessage(Exception ex, string method)
{
    LogEventArgs detail = new LogEventArgs();

    detail.ApplicationID = "ShopProcessService";
    detail.ExceptionMessage = ex.Message;
    detail.LogEventType = LogEventTypeEnum.Error;
    detail.Method = method;
    detail.Source = ex.Source;
    detail.StackTrace = ex.StackTrace;
    if (ex.InnerException != null)
        detail.InnerExceptionMessage = ex.InnerException.ToString();
    else
        detail.InnerExceptionMessage = null;

    throw new FaultException<LogEventArgs>(detail);
}

更新代码

DataContract类

namespace Ryder.Enterprise.DataTransferObjects
{
    [Serializable, DataContract(Name = "LogEventArgs", Namespace = "http://www.Ryder.com/SOA/DataContracts/2014/02/17")]
    public class LogEventArgs
    {
        private string applicationID;
        private string method;
        private LogEventTypeEnum logEventType;
        private string exceptionMessage;
        private string innerExceptionMessage;
        private string stackTrace;
        private string source;

        [DataMember(Name = "ApplicationID")]
        public string ApplicationID
        {
            get
            {
                return applicationID;
            }
            set
            {
                applicationID = value;
            }
        }
.
.
.

服务方法抛出FAULTEXCEPTION

public bool UpdateSpotCheckInventory(SpotCheck transferObject)
        {
            bool blnUpdated = false;

            try
            {
                blnUpdated = SpotCheckCollectionGateway.UpdateData(transferObject);
                LogMessage.WriteEventLog("SpotCheck records updated successfully", "Ryder.ShopProcessService.SOA", 3, null);

                return blnUpdated;
            }
            catch (Exception ex)
            {
                //throw fault exception here on service
                return blnUpdated;
            }
        }

捕获故障例外的客户端代码

catch (FaultException<LogEventArgs> ex)
            {                   ex.Detail.ApplicationID = "ShopProcessService";
                ex.Detail.LogEventType = LogEventTypeEnum.Error;
                serviceClient.Abort();
            } 

推荐答案

为简化从服务引发 FaultException 并在客户端捕获和处理该方法的方法，请遵循以下代码:

For simplifying the approach of throwing a FaultException from the service and catching and processing it at the client side kindly follow this code:

服务:

public bool UpdateSpotCheckInventory(SpotCheck transferObject)
{
    bool blnUpdated = false;
    try
    {
        blnUpdated = SpotCheckCollectionGateway.UpdateData(transferObject);
        LogMessage.WriteEventLog("SpotCheck records updated successfully", "Ryder.ShopProcessService.SOA", 3, null);
        return blnUpdated;
    }
    catch (Exception ex)
    {
        //throw fault exception here on service
        throw new FaultException("A fatal exception occurred while processing your request", new FaultCode("1000"))
    }
}

客户:

catch (FaultException ex)
{
    ex.Detail.ApplicationID = "ShopProcessService";
    ex.Detail.LogEventType = LogEventTypeEnum.Error;
    serviceClient.Abort();

    // You can also access the custom message and error code sent from the service...
    String customErrorCode = ex.Code.Name;
    String customErrorMessage = ex.Reason;
}

我确定这可以解决您的问题.:-)

I'm sure this would solve your problems. :-)

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