试图获取Alexa中的贷款金额和利率并计算EMI

Question

我正在尝试构建一个非常基本的EMI计算器。我想把贷款金额和利率分开计算，然后做数学题。但是，在获取贷款金额并确认相同之后，该程序不会移动以获取利率。

我只能达到Alexa确认贷款金额的程度。

请帮我弄明白为什么？

const Alexa = require('ask-sdk-core');


//Launch request and welcome message.
const LaunchRequestHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'LaunchRequest';
    },
    handle(handlerInput) {
        const speakOutput = 'Hello! Welcome to your E.M.I. Calculator. Please tell me the loan amount you want to calculate the E.M.I. for';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt(speakOutput)
            .getResponse();
    }
};

//capture the loan amount, save it in local variable and confirm to user the amount.
const captureLoanAmountHandler = {
    canHandle(handlerInput){
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'captureloanamount';
    },
    async handle(handlerInput){
        const currencyName = handlerInput.requestEnvelope.request.intent.slots.currency.value;
        const loanAmount = handlerInput.requestEnvelope.request.intent.slots.loanamount.value;
        
        const speakOutput = `Ok, I have captured the loan amount as ${currencyName} ${loanAmount}.`;
 //       return handlerInput.responseBuilder.speak(speakOutput);
        
 //       return handlerInput.responseBuilder.speak(speakOutput).getResponse();
        
    }
    };
    
//Prompt user for interest rate and capture it
const captureInterestRateHandler = {
    canHandle(handlerInput){
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'captureinterestrate';
    },
    
    async handle(handlerInput){
        let interestRateCaptured = false;
        while (!interestRateCaptured){
            const speakOutput = 'Please tell me the interest rate';
               interestRateCaptured = true; 
        return handlerInput.responseBuilder
            .speak(speakOutput).getResponse();
        }    
            
        const iRate = handlerInput.requestEnvelope.request.intent.slots.roi.value;    
        const speakOutput1 = `Ok, I have captured the interest rate as ${iRate}`;
        return handlerInput.responseBuilder.speak(speakOutput1).getResponse();
    }
}```

Answer 1

欢迎来到stackoverflow！

您的代码中有一些错误，我将逐一描述/修复它们。

您的CaptureLoanAmountHandler以简单的.speak命令结尾，这意味着Alexa将在她完成您要求她发言的句子后立即结束会话。为了使会话保持打开状态，将.reprompt添加到响应生成器(您也可以使用带有false参数的.shouldEndSession，但从UX的角度来看.reprompt更好)，并为用户如何与您的技能交互添加了一些线索：

//capture the loan amount, save it in local variable and confirm to user the amount.
const CaptureLoanAmountHandler = {
    canHandle(handlerInput){
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'captureloanamount';
    },
    async handle(handlerInput){
        const currencyName = handlerInput.requestEnvelope.request.intent.slots.currency.value;
        const loanAmount = handlerInput.requestEnvelope.request.intent.slots.loanamount.value;
        
        const speakOutput = `Ok, I have captured the loan amount as ${currencyName} ${loanAmount}. Now tell me your interest rate`;
        
        return handlerInput
                 .responseBuilder
                 .speak(speakOutput)
                 .reprompt('Say: interest rate is...')
                 .getResponse();
        
    }
};

您的CaptureInterestRateHandler不应该包含while循环。在您的代码中，它将只运行一次，因为您在第一次运行时将保护设置为true ;)

//Prompt user for interest rate and capture it
const CaptureInterestRateHandler = {
    canHandle(handlerInput){
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'captureinterestrate';
    },
    
    async handle(handlerInput){
        const iRate = handlerInput.requestEnvelope.request.intent.slots.roi.value;    
        const speakOutput1 = `Ok, I have captured the interest rate as ${iRate}`;
        return handlerInput.responseBuilder.speak(speakOutput1).getResponse();
    }
}

我想当您收集所有输入数据时，应该会有一些计算。

根据你的评论：

//capture the loan amount, save it in local variable and confirm to user the amount.

我想您以后会在其他意图处理程序中看到贷款金额的价值--恐怕不会：所有变量，甚至const在单个处理程序运行中都是可用的。为了在其他意图中访问它们，您需要将它们存储在SessionAttributes中。

除此之外，看看更接近对话框 -扰流板警报-它只是做所有与对话相关的魔术幕后，并在最后，您得到您的值您的要求;)