DialogFlow 更改识别语言

Question

我正在 DialogFlow 上构建一个多语言教育应用程序。 我遇到了一个大问题：切换识别语言。 有什么建议我该如何实现这一目标或任何其他方法？

我已添加到 DialogFlow 网络界面辅助语言。

我正在使用带有 node.js webhook 的 action-on-google sdk。

更新：

 let responseToUser = {
    //fulfillmentMessages: richResponsesV2, // Optional, uncomment to enable
    //outputContexts: [{ 'name': `${session}/contexts/weather`, 'lifespanCount': 2, 'parameters': {'city': 'Rome'} }], // Optional, uncomment to enable
    fulfillmentText: 'This is from Dialogflow\'s Cloud Functions for Firebase editor! :-)', // displayed response
    payload: {
       audioConfig : {
        "audioEncoding": 'AUDIO_ENCODING_FLAC',
        "sampleRateHertz": 16000,
        "languageCode": 'de',
        "phraseHints": ["gutten tag"]
       }
    },
      function sendResponse (responseToUser) {
// if the response is a string send it as a response to the user
if (typeof responseToUser === 'string') {
  let responseJson = {fulfillmentText: responseToUser}; // displayed response
  response.json(responseJson); // Send response to Dialogflow
} else {
  // If the response to the user includes rich responses or contexts send them to Dialogflow
  let responseJson = {};
  // Define the text response
  responseJson.fulfillmentText = responseToUser.fulfillmentText;
  responseJson.payload = responseToUser.payload;

     // Send the response to Dialogflow
  console.log('Response to Dialogflow: ' + JSON.stringify(responseJson));
  response.json(responseJson);

请求json：

{
  "responseId": "c4ea35d3-1455-4142-b7d2-22417c5880ae",
  "queryResult": {
"queryText": "hi",
"action": "default",
"parameters": {},
"allRequiredParamsPresent": true,
"fulfillmentText": "This is from Dialogflow's Cloud Functions for Firebase editor! :-)",
"fulfillmentMessages": [
  {
    "text": {
      "text": [
        "This is from Dialogflow's Cloud Functions for Firebase editor! :-)"
      ]
    }
  }
],
"webhookPayload": {
  "sampleRateHertz": 16000,
  "languageCode": "de",
  "phraseHints": [
    "gutten tag"
  ],
  "audioEncoding": "AUDIO_ENCODING_FLAC"
},
"outputContexts": [
  {
    "name": "projects/homehf-master/agent/sessions/824b34b9-45f8-4c65-9377-a31242d3414b/contexts/test_context",
    "lifespanCount": 5
  }
],
"intent": {
  "name": "projects/homehf-master/agent/intents/0259f134-6d4d-4aed-920d-9240adbe38fe",
  "displayName": "starter_intent"
},
"intentDetectionConfidence": 0.75,
"diagnosticInfo": {
  "webhook_latency_ms": 44
},
"languageCode": "en"
 },
    "webhookStatus": {
     "message": "Webhook execution successful"
  }
 }

Answer 1

Dialogflow 需要使用 audio request 的语言，如果您想更改该语言，则需要发出新请求。您可以在 webhook 和前端中实现一些逻辑，以使用不同的语言再次尝试请求。

为此，请在您的 webhook response 响应的有效负载字段中添加一些数据，表明您希望使用指定的不同语言发出新请求。在您的客户端中，检查response payload 中的数据，如果数据表明使用另一种语言重试，请使用input audio config 中指定的不同语言和相同的音频发送另一个请求。