.Net 4.0传递参数时WCF服务失败

问题描述：

我想从WCF测试客户端使用basichttpbinding端点来测试WCF服务。我可以测试我不无问题传递参数的方法，但是当我需要传递一个参数，我得到了以下错误：.Net 4.0传递参数时WCF服务失败

Failed to invoke the service. Possible causes: The service is offline or inaccessible; the client-side configuration does not match the proxy; the existing proxy is invalid. Refer to the stack trace for more detail. You can try to recover by starting a new proxy, restoring to default configuration, or refreshing the service.

An error occurred while executing the command definition. See the inner exception for details.

Server stack trace: at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter) at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at IErouter.GetClientSearch(String surname, String forename, String street, String postcode) at ErouterClient.GetClientSearch(String surname, String forename, String street, String postcode)

由于这一事实，我可以调用参数的方法，这个错误对我没有意义。

[ServiceContract] 
public interface IErouter 
{ 
    #region Client Search 

    [OperationContract] 
    SelectClientSearch_Result[] GetClientSearch(
     string surname, string forename, string street, string postcode); 

    #endregion 

    #region Changes 

    [OperationContract] 
    ChangeForBlackBerry[] GetClientChanges(string blackberryPin); 

    [OperationContract] 
    bool AcceptChange(int changeId, string blackberryPin); 

    [OperationContract] 
    bool AcknowledgeChange(int changeId, string blackberryPin); 

    [OperationContract] 
    ChangeForBlackBerry[] GetManagerChangesForShiftType(string blackberryPin, 
     string date, int shiftTypeId); 

    [OperationContract] 
    ClientDetailChangeViewModel GetClientDetailChange(int changeId); 

    #endregion 

    #region Client Details 

    [OperationContract] 
    ClientDetailViewModel GetClientDetails(int clientId); 

    [OperationContract] 
    SelectUserLevel_Result GetUserLevel(string blackberryPin); 

    #endregion 

    #region Useful Contacts 

    [OperationContract] 
    SelectAdminCentreTelNo_Result[] GetAdminCentreTelNos(); 

    [OperationContract] 
    string GetDutyEmail(); 

    [OperationContract] 
    SelectDutyManager_Result[] GetDutyManagerTelNos(); 

    [OperationContract] 
    string GetGhaHandyTelNo(); 

    [OperationContract] 
    SelectHospitalNos_Result[] GetHospitalTelNos(); 

    [OperationContract] 
    string GetICTTelNo(); 

    [OperationContract] 
    string GetMAHMobileTelNo(); 

    [OperationContract] 
    SelectMyManagerNo_Result[] GetMyManagerTelNo(string blackberryPin); 

    [OperationContract] 
    string GetNHSDirectTelNo(); 

    [OperationContract] 
    string GetOOHEmail(); 

    [OperationContract] 
    string GetOOHTelNo(); 

    [OperationContract] 
    string GetOperationsEmail(); 

    [OperationContract] 
    string GetOperationsTelNo(); 

    [OperationContract] 
    string GetOtherHandyPersonTelNo(); 

    [OperationContract] 
    SelectSWTelNos_Result[] GetSWTelNo(); 

    #endregion 

    #region Gaurdian 24 Visit Monitoring 

    [OperationContract] 
    string StartVisitMonitoring(int clientId, int activityDuration, 
     string activityText, string blackberryPin); 

    [OperationContract] 
    string StopVisitMonitoring(int clientId, string activityId, 
     string blackberryPin); 

    #endregion 
}

你能发布你的服务和数据合同吗？ – scmccart 2010-12-01 16:42:10

啊，我之前没有看到这个，但是我看到“执行命令定义时发生错误”，你碰巧使用了实体框架吗？ – scmccart 2010-12-01 16:59:37

什么是内部异常？你有没有在你的数据类（ClientDetailViewModel和其他）上设置[DataContract]属性 – 2010-12-01 17:14:44

答

错误来自应用程序中的其他地方... WCF错误不是最大的！ :)

答

可能是序列化错误 - 请检查您的返回类SelectClientSearch_Result是否具有[DataContract]或[Serializable]。

答

这可能是值得尝试添加以下到Web.config：

<serviceHostingEnvironment> 
    <baseAddressPrefixFilters> 
     <add prefix="http://host:port"/> 
    </baseAddressPrefixFilters> 
</serviceHostingEnvironment>

如果不工作，你可以尝试将上述和删除元素：从上次<host></host>（想法链接我已链接）

只需将以下内容添加到web.config中即可。

<system.serviceModel>   
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />  
</system.serviceModel>

我读过的网站是：

http://msdn.microsoft.com/en-us/library/aa702682.aspx 
http://msdn.microsoft.com/en-us/library/ms731336.aspx 
http://community.discountasp.net/showthread.php?t=7719

一个提到的WCF服务究竟表现得像一个ASMX服务，这是为什么我认为这可能是相关的。

编辑：

值得快速阅读吗？ http://support.microsoft.com/kb/958478

.Net 4.0传递参数时WCF服务失败

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