我正在尝试在我的Alexa技能中调用第三方API，并且在CloudWatch日志中收到“会话终止，原因：错误”。问题似乎出在我的NumberIntentHandler或httpGet函数中，但是我不确定在哪里。
更新的代码
-被解雇的处理程序-
const NumberIntentHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'IntentRequest'
&& handlerInput.requestEnvelope.request.intent.name === 'NumberIntent';
},
handle(handlerInput) {
let slotNum = handlerInput.requestEnvelope.request.intent.slots.number.value;
//var myRequest = parseInt(slotNum);
const myRequest = parseInt(slotNum);
console.log('NumberIntentHandler myRequest: ', myRequest);
var options = `http://numbersapi.com/${myRequest}`;
console.log('NumberIntentHandler options: ', options);
// Use the async function
const myResult = httpGet(options);
console.log("sent : " + options);
console.log("received : " + myResult);
const speechText = myResult;
console.log('speechText: ', speechText); // Print the speechText */
return handlerInput.responseBuilder
.speak(speechText)
.withSimpleCard('Here is your fact: ', speechText)
.getResponse();
},
};
-从处理程序调用的函数-
async function httpGet(options) {
// return new pending promise
console.log(`~~~~~~~~~ httpGet ~~~~~~~~~`);
console.log(`~~~~~${JSON.stringify(options)}~~~~~`);
return new Promise((resolve, reject) => {
const request = http.get(options, (response) => {
// handle http errors
if (response < 200 || response > 299) {
reject(new Error('Failed to load page, status code: ' + response));
}// temporary data holder
const body = [];
// on every content chunk, push it to the data array
response.on('data', (chunk) => body.push(chunk));
// we are done, resolve promise with those joined chunks
response.on('end', () => resolve(body.join('')));
console.log('body: ', body[0]);
});
// handle connection errors of the request
request.on('error', (err) => reject(err));
request.end();
});
}
更新的代码-消除了异步/等待/承诺
-处理程序-
const NumberIntentHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'IntentRequest'
&& handlerInput.requestEnvelope.request.intent.name === 'NumberIntent';
},
handle(handlerInput) {
let slotNum = handlerInput.requestEnvelope.request.intent.slots.number.value;
//var myRequest = parseInt(slotNum);
const myRequest = parseInt(slotNum);
console.log('NumberIntentHandler myRequest: ', myRequest);
var options = `http://numbersapi.com/${myRequest}`;
console.log('NumberIntentHandler options: ', options);
// Use the async function
//const myResult = httpGet(options);
const myResult = httpGet(options, res => {
console.log("sent : " + options);
console.log("received : " + myResult);
const speechText = myResult;
console.log('speechText: ', speechText); // Print the speechText */
return handlerInput.responseBuilder
.speak(speechText)
.withSimpleCard('Here is your fact: ', speechText)
.getResponse();
});
},
};
-功能-
function httpGet(options, cb) {
http.get(options, res => {
console.log(`~~~~~${JSON.stringify(options)}~~~~~`);
// simplified version without error handling
let output = [];
res.on('data', d => output.push(d)); // or concat to a string instead?
res.on('end', () => cb(output));
console.log('output: ', output[0]);
});
}
最佳答案
我相信您需要在httpGet中使用您的回复来调用resolve。
作为附带说明（与您的问题无关）-我可以建议您使用请求承诺，它在http周围实现了一个非常不错的promise API，在这种情况下将简化您的代码。 （我知道我知道，异步/等待是新的有趣的工具，但在这种情况下，我会选择“更简单” :)）。
另外，如果我没记错的话，http.get的回调仅使用一个参数被调用。
更改后进行编辑：
您可以摆脱诺言和异步来简化您的代码。
只是关于async / await的注释-如果awaited表达式不是promise，那么它将自动转换为一个。在您当前的代码中，您需要像应诺一样使用它（例如，链接.then（））或等待它。
无论如何，这是一个仅使用回调的示例：
function httpGet(options, cb) {
http.get(options, res => {
// simplified version without error handling
let output = [];
res.on('data', d => output.push(d)); // or concat to a string instead?
res.on('end', () => cb(output));
});
}
httpGet(options, res => {
// building the alexa response, all your intent handler code that needs the response from your request
})
关于javascript - Alexa技能错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/50545631/