def create_url(self):
    url = 'wss://tts-api.xfyun.cn/v2/tts'
    # 生成RFC1123格式的时间戳
    now = datetime.now()
    date = format_date_time(mktime(now.timetuple()))

    # 拼接字符串
    signature_origin = "host: " + "ws-api.xfyun.cn" + "\n"
    signature_origin += "date: " + date + "\n"
    signature_origin += "GET " + "/v2/tts " + "HTTP/1.1"
    # 进行hmac-sha256进行加密
    signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'),
                             digestmod=hashlib.sha256).digest()
    signature_sha = base64.b64encode(signature_sha).decode(encoding='utf-8')

    authorization_origin = "api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"" % (
        self.APIKey, "hmac-sha256", "host date request-line", signature_sha)
    authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode(encoding='utf-8')
    # 将请求的鉴权参数组合为字典
    v = {
        "authorization": authorization,
        "date": date,
        "host": "ws-api.xfyun.cn"
    }
    # 拼接鉴权参数,生成url
    url = url + '?' + urlencode(v)
    # print("date: ",date)
    # print("v: ",v)
    # 此处打印出建立连接时候的url,参考本demo的时候可取消上方打印的注释,比对相同参数时生成的url与自己代码生成的url是否一致
    # print('websocket url :', url)
    return url
def on_message(ws, message):
 try:
 message =json.loads(message)
 code = message[“code”]
 sid = message[“sid”]
 audio = message[“data”][“audio”]
 audio = base64.b64decode(audio)
 status = message[“data”][“status”]
 print(message)
 if status == 2:
 print(“ws is closed”)
 ws.close()
 if code != 0:
 errMsg = message[“message”]
 print(“sid:%s call error:%s code is:%s” % (sid, errMsg, code))


else:

with open('./demo.pcm', 'ab') as f:
            f.write(audio)

except Exception as e:
    print("receive msg,but parse exception:", e)

收到websocket错误的处理

def on_error(ws, error):
 print(“### error:”, error)

收到websocket关闭的处理

def on_close(ws):
 print(“### closed ###”)

收到websocket连接建立的处理

def on_open(ws):
 def run(*args):
 d = {“common”: wsParam.CommonArgs,
 “business”: wsParam.BusinessArgs,
 “data”: wsParam.Data,
 }
 d = json.dumps(d)
 print(“------>开始发送文本数据”)
 ws.send(d)
 if os.path.exists(‘./demo.pcm’):
 os.remove(‘./demo.pcm’)
thread.start_new_thread(run, ())
if name == “main”:
 # 测试时候在此处正确填写相关信息即可运行
 wsParam = Ws_Param(APPID=‘你的APPID’, APISecret=‘你的APISecret’,
 APIKey=‘你的APIKey’,
 Text=“轮播广告可在店铺首页展示图片类型的轮播广告,引导用户关注新品爆品、领取优惠券、或是招募推荐官。”)
 websocket.enableTrace(False)
 wsUrl = wsParam.create_url()
 ws = websocket.WebSocketApp(wsUrl, on_message=on_message, on_error=on_error, on_close=on_close)
 ws.on_open = on_open
 ws.run_forever(sslopt={“cert_reqs”: ssl.CERT_NONE})
六、官方demo的代码,默认生成的音频是.pcm格式,如果需要转为wav格式请使用如下方法
import wave
def pcm2wav(pcm_file, wav_file, channels=1, bits=16, sample_rate=16000):
 # 打开 PCM 文件
 pcmf = open(pcm_file, ‘rb’)
 pcmdata = pcmf.read()
 pcmf.close()
# 打开将要写入的 WAVE 文件
wavfile = wave.open(wav_file, 'wb')
# 设置声道数
wavfile.setnchannels(channels)
# 设置采样位宽
wavfile.setsampwidth(bits // 8)
# 设置采样率
wavfile.setframerate(sample_rate)
# 写入 data 部分
wavfile.writeframes(pcmdata)
wavfile.close()
if name==“main”:
 pcm2wav(“demo.pcm”, “demo.wav”)
七、如果你需要将音频转为mp3格式,请使用如下代码将wav格式转为mp3格式。


注意,安装pydub之前需要下载ffmpeg,并将其bin目录添加到环境变量,重启编辑器。


ffmpeg官方网站:[FFmpeg](),下载速度慢,可用我分享的老版本。


链接:https://pan.baidu.com/s/1c-ZpFVcTG9v1ubVSjXcaJQ   
 提取码:llmm