Botframework v4：无法渲染卡片

Question

这是 Botframework v4 文档上的示例。但它不起作用。 它在 Microsoft 机器人模拟器上显示“无法渲染卡”。 我正在尝试做的是 carouselCard，但 Microsoft 示例中的这张简单卡片已经无法使用。

    {
  "type": "message",
  "text": "Plain text is ok, but sometimes I long for more...",
  "attachments": [
    {
      "contentType": "application/vnd.microsoft.card.adaptive",
      "content": {
        "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
        "type": "AdaptiveCard",
        "version": "1.0",
        "body": [
          {
            "type": "TextBlock",
            "text": "Hello World!",
            "size": "large"
          },
          {
            "type": "TextBlock",
            "text": "*Sincerely yours,*"
          },
          {
            "type": "TextBlock",
            "text": "Adaptive Cards",
            "separation": "none"
          }
        ],
        "actions": [
          {
            "type": "Action.OpenUrl",
            "url": "http://adaptivecards.io",
            "title": "Learn More"
          }
        ]
      }
    }
  ]
}

但是，如果我删除代码的顶部，则此代码有效：

  {
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.0",
  "body": [
    {
      "type": "TextBlock",
      "text": "Hello World!",
      "size": "large"
    },
    {
      "type": "TextBlock",
      "text": "*Sincerely yours,*"
    },
    {
      "type": "TextBlock",
      "text": "Adaptive Cards",
      "separation": "none"
    }
  ],
  "actions": [
    {
      "type": "Action.OpenUrl",
      "url": "http://adaptivecards.io",
      "title": "Learn More"
    }
  ]
}

这就是我所说的卡片。有没有更好的方法来做到这一点？

 public class GetNameAndAgeDialog : WaterfallDialog
    {

        private readonly string _cards = @".\Resources\TryCarouselCard.json";

        private static Attachment CreateAdaptiveCardAttachment(string filePath)
        {
            var adaptiveCardJson = File.ReadAllText(filePath);
            var adaptiveCardAttachment = new Attachment()
            {
                ContentType = "application/vnd.microsoft.card.adaptive",
                Content = JsonConvert.DeserializeObject(adaptiveCardJson),
            };
            return adaptiveCardAttachment;
        }

        public GetNameAndAgeDialog(string dialogId, IEnumerable<WaterfallStep> steps = null) : base(dialogId, steps)
        {

            AddStep(async (stepContext, cancellationToken) =>
            {
                var cardAttachment = CreateAdaptiveCardAttachment(_cards);
                var reply = stepContext.Context.Activity.CreateReply();
                reply.Attachments = new List<Attachment>() { cardAttachment };
                await stepContext.Context.SendActivityAsync(reply, cancellationToken);
                return await stepContext.ContinueDialogAsync();
            });
         }
      }

Answer 1

您发布的第一个 JSON 块的“顶部”是活动中包含的卡片。发布的第二个 JSON 块确实只是卡片本身以及您想要放入 Attachment 的内容。

至于您的代码，我觉得它是正确的。我可能会考虑缓存附件 JSON，因为您可能不想每次显示卡片时都访问文件系统，但这只是一种优化。

我不清楚您是否遇到任何进一步的问题，或者现在只是在寻找对该方法的验证。如果您仍然遇到问题，请更新问题并提供更多详细信息，我会更新我的答案以尝试提供帮助。