Wikipedia 的 API 在使用请求模块的 Alexa 技能中不起作用

Question

const GetInfoIntentHandler = {
    canHandle(handlerInput) {
        const request = handlerInput.requestEnvelope.request;
        return (request.type === 'IntentRequest'
        && request.intent.name === 'GetInfoIntent');
    },
    handle(handlerInput) {
        let data;
        const request = require("request");

        let options = { method: 'GET',
            url :  "https://en.wikipedia.org/w/api.php?format=json&origin=*&action=query&prop=extracts&exlimit=max&explaintext&exintro&titles=manulife&redirects=",
            qs: 
            { action: 'query' } };

        request(options, function (error, response, body) {
            if (error) throw new Error(error);
            let json = body;
            let obj = JSON.parse(json);
            data = obj;

        });
        const x = "Hello";
        const speechOutput = data;
        return handlerInput.responseBuilder
        .speak(speechOutput)
        .getResponse();
    },
};

我得到的回复是Undefined。其他 API 也不起作用。我需要使用 HTTP API 吗？我已经尝试了所有方法，但似乎没有任何效果。

我已经安装了请求依赖项。

我只想让 Alexa 返回地址的第一段。

Answer 1

您收到Undefined，因为没有值被分配到变量data中。 因为您的函数在从 url 获取数据之前返回。

将return语句放入请求块中。还要从obj 对象中提取您要返回的属性。

const request = require("request");
const getData = function() {
return new Promise((resolve, reject) => {
    let options = { 
        method: 'GET',
        url :  "https://en.wikipedia.org/w/api.php?format=json&origin=*&action=query&prop=extracts&exlimit=max&explaintext&exintro&titles=manulife&redirects=",
        qs: {
            action: 'query' 
        } 
    };
    request(options, function (error, response, body) {
        if (error) reject(error);
        resolve(JSON.parse(body)); // you may want to check parsing error.
    });
 });
}
const HelloWorldIntentHandler = {
  canHandle(handlerInput) {
    return Alexa.getRequestType(handlerInput.requestEnvelope) === 
       'IntentRequest'
        && Alexa.getIntentName(handlerInput.requestEnvelope) === 
       'HelloWorldIntent';
},
 async handle(handlerInput) {
    const response = await getData();
    console.log(response);
    return handlerInput.responseBuilder
    .speak(response.query.pages["1928349"].extract)
    .getResponse();
 }
};

使用您提供的以下网址是您应该期望的响应：

{
     "batchcomplete": "",
     "query": {
     "normalized": [
        {
            "from": "manulife",
            "to": "Manulife"
        }
      ],
      "pages": {
            "1928349": {
            "pageid": 1928349,
            "ns": 0,
            "title": "Manulife",
            "extract": "Manulife Financial Corporation (also known as Financière 
                        Manuvie in Quebec) is a Canadian multinational insurance 
                        company and financial services provider headquartered in 
                        Toronto, Ontario, Canada. The company operates in Canada and 
                        Asia as \"Manulife\" and in the United States primarily 
                        through its John Hancock Financial division. As of December 
                        2015, the company employed approximately 34,000 people and had 
                        63,000 agents under contract, and has CA$935 billion in assets 
                        under management and administration. Manulife services over 26 
                        million customers worldwide.Manulife is the largest insurance 
                        company in Canada and the 28th largest fund manager in the 
                        world based on worldwide institutional assets under management 
                       (AUM).Manulife Bank of Canada is a wholly owned subsidiary of 
                        Manulife."
          }
        }
      },
   "limits": {
    "extracts": 20
  }
 }

Answer 2

const GetInfoIntentHandler = {
    canHandle(handlerInput) {
        const request = handlerInput.requestEnvelope.request;
        return (request.type === 'IntentRequest'
        && request.intent.name === 'GetInfoIntent');
    },
    handle(handlerInput) {
        let data;
        const request = require("request");

        let options = { method: 'GET',
            url :  "https://en.wikipedia.org/w/api.php?format=json&origin=*&action=query&prop=extracts&exlimit=max&explaintext&exintro&titles=manulife&redirects=",
            qs: 
            { action: 'query' } };

        request(options, function (error, response, body) {
            if (error) throw new Error(error);
            let json = body;
            let obj = JSON.parse(json);
            return handlerInput.responseBuilder
            .speak(obj.query.pages["1928349"].extract)
            .getResponse();

        });
        const x = "Hello";
        
    },
};

这是 JSON 输出 { “身体”： { “版本”：“1.0”， “回复”： {}， "userAgent": "ask-node/2.9.0 Node/v10.22.1 sample/wiki-app/v1.0", “会话属性”：{} } }

这是我的错误 "请求的技能响应有问题"

Answer 3

const GetInfoIntentHandler = {
    canHandle(handlerInput) {
        const request = handlerInput.requestEnvelope.request;
        return (request.type === 'IntentRequest'
        && request.intent.name === 'GetInfoIntent');
        
    },
    handle(handlerInput) {
        const speakOutput = 'reached intenthandler';

        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt(speakOutput)
            .getResponse();
    }
};

此代码有效，这意味着我的 getinfointenthandler 确实有效。

const GetInfoIntentHandler = {
    canHandle(handlerInput) {
        const request = handlerInput.requestEnvelope.request;
        return (request.type === 'IntentRequest'
        && request.intent.name === 'GetInfoIntent');
        
    },
    handle(handlerInput) {
        let data;
        const request = require("request");
        let options = { method: 'GET',
        url :  "https://en.wikipedia.org/w/api.php?format=json&origin=*&action=query&prop=extracts&exlimit=max&explaintext&exintro&titles=manulife&redirects=",
        qs: 
        { action: 'query' } };
        request(options, function (error, response, body) {
            if (error) throw new Error(error);
            let json = body;
            let obj = JSON.parse(json);
            return handlerInput.responseBuilder
            .speak(obj.query.pages["1928349"].extract)
            .getResponse();
        });
        
    },
    
};

此代码不起作用。它在启动请求后停止。

这是我的 JSON 输入

"request": {
        "type": "SessionEndedRequest",
        "requestId": "amzn1.echo-api.request.f26816fa-672b-4e35-9de2-126780cfb1ef",
        "timestamp": "2020-10-05T20:52:16Z",
        "locale": "en-US",
        "reason": "ERROR",
        "error": {
            "type": "INVALID_RESPONSE",
            "message": "SpeechletResponse was null"
        }
    }
}