我正在尝试将 MS botframework 示例 (https://github.com/microsoft/BotFramework-WebChat/tree/master/samples/06.c.cognitive-services-speech-services-js( 中的模拟机器人转换为使用我自己的认知服务资源。我尝试在端点中更改区域，但它对我没有帮助。对于下面的代码，我收到此错误：获取 https://westus.tts.speech.microsoft.com/cognitiveservices/voices/list net：：ERR_ABORTED 401。
<!DOCTYPE html>
<html lang="en-US">
<head>
<title>Web Chat: Cognitive Services Speech Services using JavaScript</title>
<!-- Cognitive Services Speech Services adapter is only available in full bundle -->
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<!--
This CDN points to the latest official release of Web Chat. If you need to test against Web Chat's latest bits, please refer to pointing to Web Chat's MyGet feed:
https://github.com/microsoft/BotFramework-WebChat#how-to-test-with-web-chats-latest-bits
-->
<script src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>
<style>
html,
body {
height: 100%;
}
body {
margin: 0;
}
#webchat {
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<h1>Test</h1>
<div id="webchat" role="main"></div>
<script>
// Create a function to fetch the Cognitive Services Speech Services credentials.
// The async function created will hold expiration information about the token and will return cached token when possible.
function createFetchSpeechServicesCredentials() {
let expireAfter = 0;
let lastResult = {};
return async () => {
// Fetch a new token if the existing one is expiring.
// The following article mentioned the token is only valid for 10 minutes.
// We will invalidate the token after 5 minutes.
// https://learn.microsoft.com/en-us/azure/cognitive-services/authentication#authenticate-with-an-authentication-token
if (Date.now() > expireAfter) {
const speechServicesTokenRes = await fetch(
'https://westeurope.api.cognitive.microsoft.com/sts/v1.0/issueToken',
{ method: 'POST', headers: { 'Ocp-Apim-Subscription-Key': 'MyCognitiveServicesSubscriptionKey' } }
);
/*
const speechServicesTokenRes = await fetch(
'https://webchat-mockbot.azurewebsites.net/speechservices/token',
{ method: 'POST' }
);
*/
lastResult = await speechServicesTokenRes;//.json();
expireAfter = Date.now() + 300000;
}
return lastResult;
};
}
const fetchSpeechServicesCredentials = createFetchSpeechServicesCredentials();
async function fetchSpeechServicesRegion() {
return (await fetchSpeechServicesCredentials()).region;
}
async function fetchSpeechServicesToken() {
return (await fetchSpeechServicesCredentials()).token;
}
(async function() {
// In this demo, we are using Direct Line token from MockBot.
// Your client code must provide either a secret or a token to talk to your bot.
// Tokens are more secure. To learn about the differences between secrets and tokens.
// and to understand the risks associated with using secrets, visit https://learn.microsoft.com/en-us/azure/bot-service/rest-api/bot-framework-rest-direct-line-3-0-authentication?view=azure-bot-service-4.0
const res = await fetch('https://directline.botframework.com/v3/directline/tokens/generate', { method: 'POST', headers: { Authorization: 'Bearer MySecret' }});
const { token } = await res.json();
// Create the ponyfill factory function, which can be called to create a concrete implementation of the ponyfill.
const webSpeechPonyfillFactory = await window.WebChat.createCognitiveServicesSpeechServicesPonyfillFactory({
// We are passing the Promise function to the authorizationToken field.
// This function will be called every time the token is being used.
authorizationToken: fetchSpeechServicesToken,
// In contrast, we are only fetching the region once.
//region: await fetchSpeechServicesRegion()
});
const store = window.WebChat.createStore({}, ({ dispatch }) => next => action => {
if (action.type === 'DIRECT_LINE/CONNECT_FULFILLED') {
// When we receive DIRECT_LINE/CONNECT_FULFILLED action, we will send an event activity using WEB_CHAT/SEND_EVENT
dispatch({
type: 'WEB_CHAT/SEND_EVENT',
payload: {
name: 'webchat/join',
value: { language: window.navigator.language }
}
});
}
return next(action);
});
// Pass a Web Speech ponyfill factory to renderWebChat.
// You can also use your own speech engine given it is compliant to W3C Web Speech API: https://w3c.github.io/speech-api/.
// For implementor, look at createBrowserWebSpeechPonyfill.js for details.
window.WebChat.renderWebChat(
{
directLine: window.WebChat.createDirectLine({ token }),
webSpeechPonyfillFactory,
locale: 'en-US',
store
},
document.getElementById('webchat')
);
document.querySelector('#webchat > *').focus();
})().catch(err => console.error(err));
</script>
</body>
</html>
请帮忙。
编辑：显然错误是语法错误：JSON中位置0处的意外标记e。
我不确定为什么上述会产生错误，但是如果我简化它，错误就会消失。试试这个对我有用的：
let authorizationToken;
let region;
const speechServicesTokenRes = await fetch(
'https://westus.api.cognitive.microsoft.com/sts/v1.0/issueToken',
{ method: 'POST', headers: { 'Ocp-Apim-Subscription-Key': 'MyCognitiveServicesSubscriptionKey' } }
);
if (speechServicesTokenRes.status === 200) {
region = 'westeurope',
authorizationToken = await speechServicesTokenRes.text()
} else {
return (new Error('error!'))
}
const webSpeechPonyfillFactory = await window.WebChat.createCognitiveServicesSpeechServicesPonyfillFactory( {
authorizationToken: authorizationToken,
region: region
} );
window.WebChat.renderWebChat({
directLine: directLine,
webSpeechPonyfillFactory: webSpeechPonyfillFactory
}, document.getElementById('webchat') );
希望有帮助！
在代码中，您需要使用授权令牌和区域属性定义凭据对象，并将对象传递给">createCognitiveServicesSpeechServicesPonyfillFactory"方法。
示例代码：
<div id="webchat" role="main"></div>
<script>
(async function() {
let authorizationToken;
let region;
const speechServicesTokenRes = await fetch(
'https://<your-speech-service-region-eg-uksouth>.api.cognitive.microsoft.com/sts/v1.0/issueToken', {
method: 'POST',
headers: {
'Ocp-Apim-Subscription-Key': '<your-speech-api-key>'
}
}
);
if (speechServicesTokenRes.status === 200) {
region = '<your-azure-region-eg-uksouth>',
authorizationToken = await speechServicesTokenRes.text()
} else {
return (new Error('error!'))
}
const webSpeechPonyfillFactory = await window.WebChat.createCognitiveServicesSpeechServicesPonyfillFactory({
credentials: {
authorizationToken: authorizationToken,
region: region
}
});
var dl = window.WebChat.createDirectLine({
secret: '<your-directline-default-site-secret>'
});
window.WebChat.renderWebChat({
directLine: dl,
webSpeechPonyfillFactory: webSpeechPonyfillFactory
}, document.getElementById('webchat'));
})().catch(err => console.error(err));
</script>
希望这有帮助！