Google Assistant Dialogflow API V2 Webhook ETag错误 [英] Google Assistant Dialogflow API V2 webhook ETag error

问题描述

我正在尝试使用以下代码返回简单的文本回复并在Google Assistant应用中显示基本卡:

I'm trying to return simple text response and display a basic card within Google Assistant app using the following code:

public GoogleCloudDialogflowV2WebhookResponse Search(GoogleCloudDialogflowV2WebhookRequest request)
    {
        GoogleCloudDialogflowV2WebhookResponse whr = new GoogleCloudDialogflowV2WebhookResponse();

        whr.FulfillmentMessages = new List<GoogleCloudDialogflowV2IntentMessage>();

        whr.FulfillmentMessages.Add(new GoogleCloudDialogflowV2IntentMessage()
        {                
            Platform = "ACTIONS_ON_GOOGLE",
            SimpleResponses = new GoogleCloudDialogflowV2IntentMessageSimpleResponses()
            {
               SimpleResponses = new List<GoogleCloudDialogflowV2IntentMessageSimpleResponse>()
               {
                   new GoogleCloudDialogflowV2IntentMessageSimpleResponse()
                   {
                       DisplayText = "sample text",
                       Ssml = "<speak>sample text</speak>"
                   }
               }
            },
            BasicCard = new GoogleCloudDialogflowV2IntentMessageBasicCard()
            {             
                Title = "sample title",
                Subtitle = "sample subtitle",
                FormattedText = "sample formatted text",
                Image = new GoogleCloudDialogflowV2IntentMessageImage()
                {                 
                    ImageUri = "https://assistant.google.com/static/images/molecule/Molecule-Formation-stop.png",
                    AccessibilityText = "sample image"
                }
            }
        });

        return whr;
    }

从Google Dialogflow界面调用webhook端点时出现以下错误:

I getting the following error when webhook endpoint is invoked from the Google Dialogflow interface:

webhookStatus": {
"code": 3,
"message": "Webhook call failed. Error: Failed to parse webhook JSON response: Cannot find field: ETag in message google.cloud.dialogflow.v2beta1.Intent.Message.Image." }

我找不到有关ETag问题的任何信息.我正在使用标准的Google.Apis.Dialogflow.v2 NuGet软件包和V2 API Dialogflow代理.

I cannot find any information regarding ETag issue. I'm using standard Google.Apis.Dialogflow.v2 NuGet package and V2 API Dialogflow agent.

如果我不使用GoogleCloudDialogflowV2WebhookResponse并使用自定义类，则在序列化为JSON时无需基本卡就可以正常工作.

If I don't use GoogleCloudDialogflowV2WebhookResponse and use custom class, that when serialized to JSON works fine without basic card.

{ "fulfillmentText": "test from API", "fulfillmentMessages": [ { "platform": "ACTIONS_ON_GOOGLE", "simpleResponses": { "simpleResponses": [ { "displayText": "test", "ssml": "<speak>test</speak>"}],}}],}

我希望使用GoogleCloudDialogflowV2WebhookResponse.

I would prefer to use GoogleCloudDialogflowV2WebhookResponse.

推荐答案

根据 https://www.nuget.org/packages/Google.Apis.Dialogflow. v2/.

意识到Gooogle.Cloud软件包仍是预发行版本，因此如果您在Visual Studio中使用NuGet软件包管理器UI，则必须在安装时指定版本，或单击小的包括预发行版本"复选框.

Realize that the Gooogle.Cloud package is still pre-release so you will have to specify version when installing or click the little "include prerelease" checkbox if you are using the NuGet Package Manager UI in Visual Studio.

我本人还没有尝试过，所以您的里程可能会有所不同.我将在尝试后进行更新.

I haven't tried it yet myself so your mileage may vary. I will update once I've tried it.

更新:Google.Cloud库确实可以正常工作.

Update: The Google.Cloud library does work as expected.

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