javascript - 类型错误 : Cannot read property 'Digits' of undefined in twilio when gathering user input from call

Question

我使用了 Gather User Input via Keypad (DTMF Tones) in Node.js 中的代码twilio 文档用于从调用中获取用户输入。

    app.post('/voice', (request, response) => {
       const twiml = new VoiceResponse();

       function gather() {
         const gatherNode = twiml.gather({ numDigits: 1 });
         gatherNode.say('For sales, press 1. For support, press 2.');
         twiml.redirect('/voice');
       }
       if (request.body.Digits) {
         switch (request.body.Digits) {
         case '1':
           twiml.say('You selected sales. Good for you!');
           break;
         case '2':
           twiml.say('You need support. We will help!');
           break;
         default:
           twiml.say("Sorry, I don't understand that choice.").pause();
           gather();
           break;
        }
      } else {
    gather();
   }

  response.type('text/xml');
  response.send(twiml.toString());
  });

当我调用我的 twilio 号码时，我在 if 语句中收到类似“TypeError: Cannot read property 'Digits' of undefined” 的错误。我想获取用户在通话过程中输入的号码。提前致谢!!

Answer 1

您的初始请求似乎没有正确的body。尝试在 if 语句中添加检查:

if (request.body && request.body.Digits) {
  // switch / case
} else {
  gather();
}