无法获取 Azure 认知服务的访问令牌（对于 tts）

Question

我似乎无法获得 Azure 认知服务访问令牌的授权。我正在使用 azure 团队发布到 github.

的示例代码（修改为获取我的密钥）

我已经阅读了文档，据我所知，我所做的一切都是正确的。我也用过 "Unified Speech Services for free trials"，但也不起作用。

class TextToSpeech(object):
    def __init__(self, subscription_key):
        self.subscription_key = subscription_key
        self.tts = "testing the TTS abilities of Azure using python"
        #self.tts = input("What would you like to convert to speech: ")
        self.timestr = time.strftime("%Y%m%d-%H%M")
        self.access_token = None

    '''
    The TTS endpoint requires an access token. This method exchanges your
    subscription key for an access token that is valid for ten minutes.
    '''
    def get_token(self):
        fetch_token_url = "https://eastus.api.cognitive.microsoft.com/sts/v1.0/issuetoken"
        headers = {
            'Ocp-Apim-Subscription-Key': self.subscription_key
        }
        response = requests.post(fetch_token_url, headers=headers)
        self.access_token = str(response.text)

if __name__ == "__main__":
    app = TextToSpeech(subscription_key)
    app.get_token()

这是访问令牌的输出

'{"error":{"code":"401","message": "Access denied due to invalid subscription key or wrong API endpoint. Make sure to provide a valid key for an active subscription and use a correct regional API endpoint for your resource."}}'

我应该得到的是临时访问令牌，但由于某种原因我得到了上述错误，我不知道为什么。

Answer 1

此错误是由于您调用了错误的端点。请尝试下面的代码，开始在 main 方法中使用您自己的订阅参数：

import os, requests, time
from xml.etree import ElementTree


try: input = raw_input
except NameError: pass



class TextToSpeech(object):
    def __init__(self, subscription_key,region):
        self.subscription_key = subscription_key
        self.region =region
        self.tts = input("What would you like to convert to speech: ")
        self.timestr = time.strftime("%Y%m%d-%H%M")
        self.access_token = None

    def get_token(self):
        fetch_token_url = 'https://'+self.region+'.api.cognitive.microsoft.com/sts/v1.0/issuetoken'
        headers = {
            'Ocp-Apim-Subscription-Key': self.subscription_key
        }
        response = requests.post(fetch_token_url, headers=headers)
        self.access_token = str(response.text)

    def save_audio(self):
        base_url = 'https://'+self.region+'.tts.speech.microsoft.com/'
        path = 'cognitiveservices/v1'
        constructed_url = base_url + path
        headers = {
            'Authorization': 'Bearer ' + self.access_token,
            'Content-Type': 'application/ssml+xml',
            'X-Microsoft-OutputFormat': 'riff-24khz-16bit-mono-pcm',
            'User-Agent': 'YOUR_RESOURCE_NAME'
        }
        xml_body = ElementTree.Element('speak', version='1.0')
        xml_body.set('{http://www.w3.org/XML/1998/namespace}lang', 'en-us')
        voice = ElementTree.SubElement(xml_body, 'voice')
        voice.set('{http://www.w3.org/XML/1998/namespace}lang', 'en-US')
        voice.set('name', 'en-US-Guy24kRUS') # Short name for 'Microsoft Server Speech Text to Speech Voice (en-US, Guy24KRUS)'
        voice.text = self.tts
        body = ElementTree.tostring(xml_body)

        response = requests.post(constructed_url, headers=headers, data=body)
        '''
        If a success response is returned, then the binary audio is written
        to file in your working directory. It is prefaced by sample and
        includes the date.
        '''
        if response.status_code == 200:
            with open('sample-' + self.timestr + '.wav', 'wb') as audio:
                audio.write(response.content)
                print("\nStatus code: " + str(response.status_code) + "\nYour TTS is ready for playback.\n")
        else:
            print("\nStatus code: " + str(response.status_code) + "\nSomething went wrong. Check your subscription key and headers.\n")

    def get_voices_list(self):
        base_url = 'https://'+self.region+'.tts.speech.microsoft.com/'
        path = 'cognitiveservices/voices/list'
        constructed_url = base_url + path
        headers = {
            'Authorization': 'Bearer ' + self.access_token,
        }
        response = requests.get(constructed_url, headers=headers)
        if response.status_code == 200:
            print("\nAvailable voices: \n" + response.text)
        else:
            print("\nStatus code: " + str(response.status_code) + "\nSomething went wrong. Check your subscription key and headers.\n")

if __name__ == "__main__":
    region = '<your region here , in your case , the value should be eastus>'
    subscription_key = '<your subscription key here>'
    app = TextToSpeech(subscription_key,region)
    app.get_token()
    app.save_audio()

您可以在此处的 Azure 门户上找到您的区域和订阅密钥值：

我已经在我这边进行了测试，它对我有用。一旦你完成代码，就会创建一个 wav 文件，这就是你需要的东西：

无法获取 Azure 认知服务的访问令牌（对于 tts）

Cannot get access token for Azure Cognitive Services (for tts)

python

text-to-speech

azure

access-token

microsoft-cognitive