无法转换为System.Guid

Question

尝试设置RavenDb 3.5和NServiceBus6。发送完在NServiceBus端点中设置的传奇之后，我输入一个处理程序。 处理程序完成后，我得到此错误消息。

System.ArgumentException：无法将标识转换为System.Guid类型，因为在约定的IdentityTypeConvertors中没有注册匹配的类型转换器

我的代码：

public static class AutoFacConfig
{
    public static IContainer ConfigureAutofac()
    {
        var builder = new ContainerBuilder();

        var resourceManagerId = new Guid("6c9abcbb-c7ca-4a67-a149-5142f633f535");

        var dtcRecoveryBasePath = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
        var recoveryPath = Path.Combine(dtcRecoveryBasePath, "NServiceBus.RavenDB", resourceManagerId.ToString());

        builder.Register(x =>
        {
            var store = new DocumentStore
            {
                ConnectionStringName = "RavenDB",
                ResourceManagerId = resourceManagerId,
                TransactionRecoveryStorage = new LocalDirectoryTransactionRecoveryStorage(recoveryPath)
            };
            store.DefaultDatabase = "MyDB";
            store.Initialize();
            store.Conventions.IdentityPartsSeparator = "-";
            var _guidTypeConvertor = store.Conventions
                .IdentityTypeConvertors
                .FirstOrDefault(id => id.CanConvertFrom(typeof(Guid)));
            if (_guidTypeConvertor != null)
                store.Conventions.IdentityTypeConvertors.Remove(_guidTypeConvertor);
            return store;
        })
            .As<IDocumentStore>()
            .SingleInstance();

        builder.Register<IFilesStore>(x =>
        {
            var fileStore = new FilesStore()
            {
                Url = "http://localhost:40000",
                DefaultFileSystem = "MyFS",
            }.Initialize();
            return fileStore;
        }).SingleInstance();

        return builder.Build();
    }
}

在传奇中：

    protected override void ConfigureHowToFindSaga(SagaPropertyMapper<FileToOrderSagaData> mapper)
    {
        mapper.ConfigureMapping<StartFileToOrderSagaCommand>(m => m.DataId)
            .ToSaga(s => s.DataId);
    }

    public async Task Handle(StartFileToOrderSagaCommand message, IMessageHandlerContext context)
    {
        // Do Validation ValidateXmlCommand
        Data.DataId = message.DataId;
        await context.Send<ValidateXmlCommand>( x => { x.Filename = message.Filename; x.CustomerId = message.CustomerId; });
    }

这是堆栈跟踪：

System.ArgumentException: Could not convert identity to type System.Guid because there is not matching type converter registered in the conventions' IdentityTypeConvertors
at Raven.Client.Document.GenerateEntityIdOnTheClient.SetPropertyOrField(Type propertyOrFieldType, Object entity, Action`1 setIdentifier, String id) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Document\GenerateEntityIdOnTheClient.cs:line 167
at Raven.Client.Document.GenerateEntityIdOnTheClient.TrySetIdentity(Object entity, String id) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Document\GenerateEntityIdOnTheClient.cs:line 143
at Raven.Client.Document.InMemoryDocumentSessionOperations.<GenerateDocumentKeyForStorageAsync>d__99.MoveNext() in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Document\InMemoryDocumentSessionOperations.cs:line 833
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Raven.Client.Document.InMemoryDocumentSessionOperations.<StoreAsyncInternal>d__96.MoveNext() in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Document\InMemoryDocumentSessionOperations.cs:line 803
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.Persistence.RavenDB.SagaPersister.<Save>d__0.MoveNext() in C:\BuildAgent\work\c4d62ce02b983878\src\NServiceBus.RavenDB\SagaPersister\SagaPersister.cs:line 24
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.SagaPersistenceBehavior.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Sagas\SagaPersistenceBehavior.cs:line 133
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.LoadHandlersConnector.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Pipeline\Incoming\LoadHandlersConnector.cs:line 40
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.InvokeSagaNotFoundBehavior.<Invoke>d__0.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Sagas\InvokeSagaNotFoundBehavior.cs:line 16
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.DeserializeLogicalMessagesConnector.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Pipeline\Incoming\DeserializeLogicalMessagesConnector.cs:line 31
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.Persistence.RavenDB.OpenAsyncSessionBehavior.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\c4d62ce02b983878\src\NServiceBus.RavenDB\SessionManagement\OpenAsyncSessionBehavior.cs:line 21
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.InvokeAuditPipelineBehavior.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Audit\InvokeAuditPipelineBehavior.cs:line 18
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.SubscriptionReceiverBehavior.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Routing\MessageDrivenSubscriptions\SubscriptionReceiverBehavior.cs:line 29
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.ProcessingStatisticsBehavior.<Invoke>d__0.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Performance\Statistics\ProcessingStatisticsBehavior.cs:line 27
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.ReceivePerformanceDiagnosticsBehavior.<Invoke>d__2.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Performance\Statistics\ReceivePerformanceDiagnosticsBehavior.cs:line 40
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.TransportReceiveToPhysicalMessageProcessingConnector.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Pipeline\Incoming\TransportReceiveToPhysicalMessageProcessingConnector.cs:line 37
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.MainPipelineExecutor.<Invoke>d__1.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Pipeline\MainPipelineExecutor.cs:line 32
--- End of stack trace from previous location where exception was thrown --
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.ReceiveStrategy.<TryProcessMessage>d__7.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Transports\Msmq\ReceiveStrategy.cs:line 109
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at NServiceBus.TransactionScopeStrategy.<ProcessMessage>d__2.MoveNext() in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Transports\Msmq\TransactionScopeStrategy.cs:line 86

到处搜寻以找出答案，但是我对这个Guid和Converter到底是什么一无所知。

有帮助吗？ 谢谢

Answer 1

store.Conventions.IdentityTypeConvertors.Remove(_guidTypeCon‌​vertor);

正在删除Guid类型转换器。 这就是为什么您遇到：

System.ArgumentException：无法将标识转换为System.Guid类型，因为在约定的IdentityTypeConvertors中没有注册匹配的类型转换器

您应该删除该行代码。