無法獲取 Azure 認知服務的訪問令牌（用於 tts）

Question

我似乎無法獲得 Azure 認知服務訪問令牌的授權。 我正在使用 azure 團隊發布到 github 的示例代碼（修改為獲取我的密鑰）。

我已經瀏覽了文檔，據我所知，我做的一切都是正確的。 我還使用了“免費試用的統一語音服務”，但這也不起作用。

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()

這是訪問令牌的output

'{"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."}}'

我應該得到的是臨時訪問令牌，但由於某種原因，我得到了上述錯誤，我不知道為什么。

Answer 1

此錯誤是由於您調用了錯誤的端點。 請嘗試下面的代碼以在 main 方法中開始使用您自己的訂閱參數：

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()

您可以在此處的 Azure 門戶網站上找到您的地區和訂閱密鑰值：

我已經在我這邊進行了測試，它對我有用。一旦你通過代碼 go，將創建一個 wav 文件，這就是你需要的東西：