FormBuilder 中 BOT Framework 应用程序中的异常：无法通过非托管序列化委托

Question

我在 FormFlow 中遇到以下错误。快速帮助真的很可观。

Exception: anonymous method closures that capture the environment are not serializable, consider removing environment capture or using a reflection serialization surrogate: FlightBot.FlightManager+<>c__DisplayClass2_0", "attachments": [ { "contentType": "text/plain", "content": " at Microsoft.Bot.Builder.Internals.Fibers.Serialization.ClosureCaptureErrorSurrogate.System.Runtime.Serialization.ISerializationSurrogate.GetObjectData(Object obj, SerializationInfo info, StreamingContext context)

在 Whosebug 和 GitHub 上搜索后，我得到一段代码，上面写着 "You need to register it in autofac container"。

所以我把下面的代码放在 WebAPIConfig.cs

    var builder = new ContainerBuilder();
    builder.RegisterModule(new ReflectionSurrogateModule());
    builder.Update(Conversation.Container);

但是我还是报了错，但是这次的报错和之前的不一样，下面给出了，

"Exception: Cannot serialize delegates over unmanaged function pointers, dynamic methods or methods outside the delegate creator's assembly.", "attachments": [ { "contentType": "text/plain", "content": " at System.MulticastDelegate.GetObjectData(SerializationInfo info, StreamingContext context)\r\n at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder)\r\n

我已经把我的应用程序的完整代码复制到这里了。

第一部分是我调用的 MessagesController class FlightManager 是一个 LUIS 对话框。
代码的第二部分是我调用的 FlightManager class 航班预订 class.

第三个是实际订的机票class.

[BotAuthentication]
public class MessagesController : ApiController
{
    internal static IDialog<object> MakeRootDialog()
    {
        return Chain.From(() => new FlightManager());
    }

    public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
    {
        if (activity.Type == ActivityTypes.Message)
        {
            await Conversation.SendAsync(activity, MakeRootDialog);
        }
        else
        {
            HandleSystemMessage(activity);
        }
        var response = Request.CreateResponse(HttpStatusCode.OK);
        return response;
    }

    private Activity HandleSystemMessage(Activity message)
    {
        if (message.Type == ActivityTypes.DeleteUserData)
        {
            // Implement user deletion here
            // If we handle user deletion, return a real message
        }
        else if (message.Type == ActivityTypes.ConversationUpdate)
        {
            // Handle conversation state changes, like members being added and removed
            // Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
            // Not available in all channels
        }
        else if (message.Type == ActivityTypes.ContactRelationUpdate)
        {
            // Handle add/remove from contact lists
            // Activity.From + Activity.Action represent what happened
        }
        else if (message.Type == ActivityTypes.Typing)
        {
            // Handle knowing tha the user is typing
        }
        else if (message.Type == ActivityTypes.Ping)
        {
        }

        return null;
    }
}

namespace FlightBot
{
    [LuisModel("luis model key", "luis secret")] 
    [Serializable]
    public class FlightManager : LuisDialog<object>
    {
        public async Task FlightBookingTask(IDialogContext context, LuisResult result)
        {
            PromptDialog.Confirm(
                context: context,
                resume: ResumeAndHandleConfirmAsync,
                prompt: $"It seems you wish to book a flight. Do you wish to continue?",
                retry: "I didn't understand. Please try again.");
        }

        private async Task ResumeAndHandleConfirmAsync(IDialogContext context, IAwaitable<bool> argument)
        {
            FlightBooking cb = new FlightBooking();
            BuildFormDelegate<FlightBooking> MakeFlightBookingForm = () => FlightBooking.BuildForm(context);
            var flightBooking = new FormDialog<FlightBooking>(cb, MakeFlightBookingForm, FormOptions.PromptInStart, null);
            context.Call(flightBooking, FlightBookingComplete);
        }

        private async Task FlightBookingComplete(IDialogContext context, IAwaitable<FlightBooking> result)
        {
            context.Wait(MessageReceived);
        }
    }
}

namespace FlightBot
{
    [Serializable]
    public class FlightBooking
    {
        [Prompt("Enter source :")]
        public string Source { get; set; }

        [Prompt("Enter destination :")]
        public string Destination { get; set; }

        public static IForm<FlightBooking> BuildForm(IDialogContext context)
        {
            return new FormBuilder<FlightBooking>().Message("Tell me about flight details!")
           .Field(nameof(Source))
           .Field(nameof(Destination))
           .Build();

        }
    }
}

Answer 1

我遇到了第一个异常，据我了解，在这一行中调用表单构建器方法时无法发送参数：

BuildFormDelegate<FlightBooking> MakeFlightBookingForm = () => FlightBooking.BuildForm(context);

因此请确保您声明的方法没有任何参数：

public static IForm<FlightBooking> BuildForm()
{ //code   }

希望对你有所帮助，祝你的机器人好运！

FormBuilder 中 BOT Framework 应用程序中的异常：无法通过非托管序列化委托

Exception in BOT Framework application in a FormBuilder : Cannot serialize delegates over unmanaged

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