我正在玩Alexa API，所以我从这里下载了一个Hello World示例 https://developer.amazon.com/appsandservices/solutions/alexa/alexa-skills-kit/getting-started-guide
我设法做了一些小改动，让Alexa说出其他的事情。 但是现在我希望有一个真实世界的例子，所以我试着为用户提供最新的推文。
所以我编写了一个推特功能，它可以工作，我在控制台上看到推文。 此外，下载的示例也可以正常工作。 但是现在，当我尝试通过将我的twitter函数添加到Alexa示例中来组合它们时，它会在尝试打印值时抛出以下错误（如果我不打印它，它不会中断）：
{"errorMessage": "Exception: ReferenceError: data is not defined"}
这是代码，但修改后的函数是getWelcomeResponse（）
// Route the incoming request based on type (LaunchRequest, IntentRequest,
// etc.) The JSON body of the request is provided in the event parameter.
exports.handler = function (event, context) {
try {
console.log("event.session.application.applicationId=" + event.session.application.applicationId);
/**
* Uncomment this if statement and populate with your skill's application ID to
* prevent someone else from configuring a skill that sends requests to this function.
*/
/*
if (event.session.application.applicationId !== "amzn1.echo-sdk-ams.app.[unique-value-here]") {
context.fail("Invalid Application ID");
}
*/
if (event.session.new) {
onSessionStarted({requestId: event.request.requestId}, event.session);
}
if (event.request.type === "LaunchRequest") {
onLaunch(event.request,
event.session,
function callback(sessionAttributes, speechletResponse) {
context.succeed(buildResponse(sessionAttributes, speechletResponse));
});
} else if (event.request.type === "IntentRequest") {
onIntent(event.request,
event.session,
function callback(sessionAttributes, speechletResponse) {
context.succeed(buildResponse(sessionAttributes, speechletResponse));
});
} else if (event.request.type === "SessionEndedRequest") {
onSessionEnded(event.request, event.session);
context.succeed();
}
} catch (e) {
context.fail("Exception: " + e);
}
};
/**
* Called when the session starts.
*/
function onSessionStarted(sessionStartedRequest, session) {
console.log("onSessionStarted requestId=" + sessionStartedRequest.requestId
+ ", sessionId=" + session.sessionId);
}
/**
* Called when the user launches the skill without specifying what they want.
*/
function onLaunch(launchRequest, session, callback) {
console.log("onLaunch requestId=" + launchRequest.requestId
+ ", sessionId=" + session.sessionId);
// Dispatch to your skill's launch.
getWelcomeResponse(callback);
}
/**
* Called when the user specifies an intent for this skill.
*/
function onIntent(intentRequest, session, callback) {
console.log("onIntent requestId=" + intentRequest.requestId
+ ", sessionId=" + session.sessionId);
var intent = intentRequest.intent,
intentName = intentRequest.intent.name;
// Dispatch to your skill's intent handlers
if ("MyColorIsIntent" === intentName) {
setColorInSession(intent, session, callback);
} else if ("WhatsMyColorIntent" === intentName) {
getColorFromSession(intent, session, callback);
} else if ("HelpIntent" === intentName) {
getWelcomeResponse(callback);
} else {
throw "Invalid intent";
}
}
/**
* Called when the user ends the session.
* Is not called when the skill returns shouldEndSession=true.
*/
function onSessionEnded(sessionEndedRequest, session) {
console.log("onSessionEnded requestId=" + sessionEndedRequest.requestId
+ ", sessionId=" + session.sessionId);
// Add cleanup logic here
}
// --------------- Functions that control the skill's behavior -----------------------
function getWelcomeResponse(callback) {
var twit = require('twitter'),
twitter = new twit({
consumer_key:'***',
consumer_secret:'***',
access_token_key:'***',
access_token_secret:'***'
});
//var count = 0;
var util = require('util');
params = {
screen_name: 'kilinkis', // the user id passed in as part of the route
count: 1 // how many tweets to return
};
// request data
twitter.get('https://api.twitter.com/1.1/statuses/user_timeline.json', params, function (data) {
console.log(util.inspect(data[0].text));
});
// If we wanted to initialize the session to have some attributes we could add those here.
var sessionAttributes = {};
var cardTitle = "Welcome";
/*var speechOutput = "Welcome to the Alexa Skills Kit sample, "
+ "Please tell me your favorite color by saying, "
+ "my favorite color is red";*/
//var speechOutput=util.inspect(data[0].text);
var speechOutput=data[0].text;
// If the user either does not reply to the welcome message or says something that is not
// understood, they will be prompted again with this text.
var repromptText = "Please tell me your favorite color by saying, "
+ "my favorite color is red";
var shouldEndSession = true;
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}
/**
* Sets the color in the session and prepares the speech to reply to the user.
*/
function setColorInSession(intent, session, callback) {
var cardTitle = intent.name;
var favoriteColorSlot = intent.slots.Color;
var repromptText = "";
var sessionAttributes = {};
var shouldEndSession = false;
var speechOutput = "";
if (favoriteColorSlot) {
favoriteColor = favoriteColorSlot.value;
sessionAttributes = createFavoriteColorAttributes(favoriteColor);
speechOutput = "I now know your favorite color is " + favoriteColor + ". You can ask me "
+ "your favorite color by saying, what's my favorite color?";
repromptText = "You can ask me your favorite color by saying, what's my favorite color?";
} else {
speechOutput = "I'm not sure what your favorite color is, please try again";
repromptText = "I'm not sure what your favorite color is, you can tell me your "
+ "favorite color by saying, my favorite color is red";
}
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}
function createFavoriteColorAttributes(favoriteColor) {
return {
favoriteColor: favoriteColor
};
}
function getColorFromSession(intent, session, callback) {
var cardTitle = intent.name;
var favoriteColor;
var repromptText = null;
var sessionAttributes = {};
var shouldEndSession = false;
var speechOutput = "";
if(session.attributes) {
favoriteColor = session.attributes.favoriteColor;
}
if(favoriteColor) {
speechOutput = "Your favorite color is " + favoriteColor + ", goodbye";
shouldEndSession = true;
}
else {
speechOutput = "I'm not sure what your favorite color is, you can say, my favorite color "
+ " is red";
}
// Setting repromptText to null signifies that we do not want to reprompt the user.
// If the user does not respond or says something that is not understood, the session
// will end.
callback(sessionAttributes,
buildSpeechletResponse(intent.name, speechOutput, repromptText, shouldEndSession));
}
// --------------- Helpers that build all of the responses -----------------------
function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
return {
outputSpeech: {
type: "PlainText",
text: output
},
card: {
type: "Simple",
title: "SessionSpeechlet - " + title,
content: "SessionSpeechlet - " + output
},
reprompt: {
outputSpeech: {
type: "PlainText",
text: repromptText
}
},
shouldEndSession: shouldEndSession
}
}
function buildResponse(sessionAttributes, speechletResponse) {
return {
version: "1.0",
sessionAttributes: sessionAttributes,
response: speechletResponse
}
}
有人可以指导我说错了吗？它可能是一个范围问题，我不确定。
答案 0 :(得分：1)
将您的通话移回twitter get功能。然后你的回调将在twitter api成功获得后被调用。您还可以访问数据对象。您可能还想添加一个失败案例并包含一个context.fail（）。
如果需要，还可以在AWS控制台的配置选项卡下更新timeout参数。它在高级设置下。此外，在调试时将Alexa排除在等式之外通常很有用，只需先将twitter api工作。
// request data
twitter.get('https://api.twitter.com/1.1/statuses/user_timeline.json', params, function (data) {
console.log(util.inspect(data[0].text));
// If we wanted to initialize the session to have some attributes we could add those here.
var sessionAttributes = {};
var cardTitle = "Welcome";
var speechOutput=data[0].text;
var repromptText = "";
var shouldEndSession = true;
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
});