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问如何在C#中使用AWS发送响应卡
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Stack Overflow用户

提问于 2020-06-08 07:08:51

回答 3查看 508关注 0票数 11

嗨，我正在amazon上开发一个聊天机器人，我想使用lambda函数发送响应卡，但是如果在关闭响应格式中使用响应卡函数，则会出现空异常的错误。有人能说出解决办法吗？PS我是使用FlowerOrder蓝图创建的尼基。

if (slots[greet] != null) 
        {

            var validateGreet = ValidateUserGreeting(slots[greet]);
            if (validateGreet.IsValid) 
            {
                return Close(sessionAttributes,
                              "Fulfilled",
                              new LexResponse.LexMessage
                              {
                                  ContentType = "PlainText",
                                  Content = String.Format("Hello Kindly choose one option")
                              },
                              new LexResponse.LexResponseCard
                              {
                                  Version = 1,
                                  ContentType = "application/vnd.amazonaws.card.generic",
                                  GenericAttachments =
                                  {
                                  new LexResponse.LexGenericAttachments
                                  {
                                      Buttons =
                                      {
                                         new LexResponse.LexButton
                                         {
                                             Text = "Shop Now",
                                             Value = "Shop Now"
                                         }
                                      },
                                      AttachmentLinkUrl = null,
                                      Title = "Shopping",
                                      SubTitle = "Sub Shopping",
                                      ImageUrl = null
                                  }
                                  }
                              }
                              );
            }

异常：-

2020-06-09 17:31:20:对象引用没有设置为对象的实例。：EVS_Test_Abbar_Lambda_Function.OrderWatchIntentProcessorTest.Process(LexEvent lexEvent，ILambdaContext上下文中的NullReferenceException )在D:\AWS项目\Abbrar Projects\EVS_Test_Abbar_Lambda_Function\EVS_Test_Abbar_Lambda_Function\OrderWatchIntentProcessorTest.cs:line 52 at EVS_Test_Abbar_Lambda_Function.Function.FunctionHandler(LexEvent lexEvent，在D:\AWS \Abbrar Projects\EVS_Test_Abbar_Lambda_Function\EVS_Test_Abbar_Lambda_Function\Function.cs:line 43 at lambda_method(关闭、流、流、LambdaContextInternal )

aws-lambda

chatbot

aws-lex

aws-sdk-net

回答 3

Stack Overflow用户

回答已采纳

发布于 2020-06-10 09:07:22

这是它的解决方案，因为如果您查看JSON的结构，它包含许多模型和列表，每个模型和列表都必须单独处理。

LexResponse.LexResponseCard lexResponseCard = new LexResponse.LexResponseCard();

    List<LexResponse.LexGenericAttachments> ListlexGenericAttachments = new List<LexResponse.LexGenericAttachments>();
    LexResponse.LexGenericAttachments lexGenericAttachments = new LexResponse.LexGenericAttachments();



    List<LexResponse.LexButton> ListlexButton = new List<LexResponse.LexButton>();
    LexResponse.LexButton lexButton = new LexResponse.LexButton();



    lexButton.Text = "Yes Now";
    lexButton.Value = "Yes";
    ListlexButton.Add(lexButton);
    lexGenericAttachments.AttachmentLinkUrl = "Link";
    //lexGenericAttachments.AttachmentLinkUrl = null;
    lexGenericAttachments.Title = "Shopping";
    lexGenericAttachments.SubTitle = "Sub Shopping";
    lexGenericAttachments.ImageUrl = "Link";
    //lexGenericAttachments.ImageUrl = null;
    lexGenericAttachments.Buttons = ListlexButton;



    ListlexGenericAttachments.Add(lexGenericAttachments);



    lexResponseCard.Version = 0;
    lexResponseCard.ContentType = "application/vnd.amazonaws.card.generic";
    lexResponseCard.GenericAttachments = ListlexGenericAttachments;



    return Close(sessionAttributes,
                      "Fulfilled", 
                      new LexResponse.LexMessage
                      {
                          ContentType = "PlainText",
                          Content = String.Format("Hello Kindly choose one option")
                      },
                      lexResponseCard
                      );

票数 2

Stack Overflow用户

发布于 2020-06-15 15:08:41

这可能是你的大写键名。例如，您有ContentType，但它应该是contentType作为camelcase，以小写字母开头。

return Close(sessionAttributes,
    "Fulfilled",
    new LexResponse.LexMessage
    {
        contentType = "PlainText",
        content = String.Format("Hello Kindly choose one option")
    },
    new LexResponse.LexResponseCard
    {
        version = 1,
        contentType = "application/vnd.amazonaws.card.generic",
        GenericAttachments =
        {
                new LexResponse.LexGenericAttachments
                {
                    Buttons =
                    {
                        new LexResponse.LexButton
                        {
                            text = "Shop Now",
                            value = "Shop Now"
                        }
                    },
                    attachmentLinkUrl = null,
                    title = "Shopping",
                    subTitle = "Sub Shopping",
                    imageUrl = null
                }
        }
    }
);

票数 1

Stack Overflow用户

发布于 2020-06-15 23:27:10

只试一张莱克斯反应卡。

    return Close(sessionAttributes,
    "Fulfilled"
    new LexResponse.LexResponseCard
    {
        version = 1,
        contentType = "application/vnd.amazonaws.card.generic",
        GenericAttachments =
        {
                new LexResponse.LexGenericAttachments
                {
                    Buttons =
                    {
                        new LexResponse.LexButton
                        {
                            text = "Shop Now",
                            value = "Shop Now"
                        }
                    },
                    attachmentLinkUrl = null,
                    title = "Shopping",
                    subTitle = "Sub Shopping",
                    imageUrl = null
                }
        }
    }
);

票数 1

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/62256761

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