tools.py

#!/usr/bin/python3
# -*- coding:utf-8 -*-
import os
import datetime
import re
import time
import traceback
import math
from urllib.parse import urlparse
from urllib3 import encode_multipart_formdata
from wsgiref.handlers import format_date_time
from time import mktime
import hashlib
import base64
import hmac
from urllib.parse import urlencode
import json
import requests
import azure.cognitiveservices.speech as speechsdk

# 常量定义
LFASR_HOST = "http://upload-ost-api.xfyun.cn/file"  # 文件上传Host
API_INIT = "/mpupload/init"  # 初始化接口
API_UPLOAD = "/upload"  # 上传接口
API_CUT = "/mpupload/upload"  # 分片上传接口
API_CUT_COMPLETE = "/mpupload/complete"  # 分片完成接口
API_CUT_CANCEL = "/mpupload/cancel"  # 分片取消接口
FILE_PIECE_SIZE = 5242880  # 文件分片大小5M
PRO_CREATE_URI = "/v2/ost/pro_create"
QUERY_URI = "/v2/ost/query"


# 文件上传类
class FileUploader:
    def __init__(self, app_id, api_key, api_secret, upload_file_path):
        self.app_id = app_id
        self.api_key = api_key
        self.api_secret = api_secret
        self.upload_file_path = upload_file_path

    def get_request_id(self):
        """生成请求ID"""
        return time.strftime("%Y%m%d%H%M")

    def hashlib_256(self, data):
        """计算 SHA256 哈希"""
        m = hashlib.sha256(bytes(data.encode(encoding="utf-8"))).digest()
        digest = "SHA-256=" + base64.b64encode(m).decode(encoding="utf-8")
        return digest

    def assemble_auth_header(self, request_url, file_data_type, method="", body=""):
        """组装鉴权头部"""
        u = urlparse(request_url)
        host = u.hostname
        path = u.path
        now = datetime.datetime.now()
        date = format_date_time(mktime(now.timetuple()))
        digest = "SHA256=" + self.hashlib_256("")
        signature_origin = "host: {}\ndate: {}\n{} {} HTTP/1.1\ndigest: {}".format(
            host, date, method, path, digest
        )
        signature_sha = hmac.new(
            self.api_secret.encode("utf-8"),
            signature_origin.encode("utf-8"),
            digestmod=hashlib.sha256,
        ).digest()
        signature_sha = base64.b64encode(signature_sha).decode(encoding="utf-8")
        authorization = 'api_key="%s", algorithm="%s", headers="%s", signature="%s"' % (
            self.api_key,
            "hmac-sha256",
            "host date request-line digest",
            signature_sha,
        )
        headers = {
            "host": host,
            "date": date,
            "authorization": authorization,
            "digest": digest,
            "content-type": file_data_type,
        }
        return headers

    def call_api(self, url, file_data, file_data_type):
        """调用POST API接口"""
        headers = self.assemble_auth_header(
            url, file_data_type, method="POST", body=file_data
        )
        try:
            resp = requests.post(url, headers=headers, data=file_data, timeout=8)
            print("上传状态：", resp.status_code, resp.text)
            return resp.json()
        except Exception as e:
            print("上传失败！Exception ：%s" % e)
            return None

    def upload_cut_complete(self, upload_id):
        """分块上传完成"""
        body_dict = {
            "app_id": self.app_id,
            "request_id": self.get_request_id(),
            "upload_id": upload_id,
        }
        file_data_type = "application/json"
        url = LFASR_HOST + API_CUT_COMPLETE
        response = self.call_api(url, json.dumps(body_dict), file_data_type)
        if response and "data" in response and "url" in response["data"]:
            file_url = response["data"]["url"]
            print("任务上传结束")
            return file_url
        else:
            print("分片上传完成失败", response)
            return None

    def upload_file(self):
        """上传文件，根据文件大小选择分片或普通上传"""
        file_total_size = os.path.getsize(self.upload_file_path)
        if file_total_size < 31457280:  # 30MB
            print("-----不使用分块上传-----")
            return self.simple_upload()
        else:
            print("-----使用分块上传-----")
            return self.multipart_upload()

    def simple_upload(self):
        """简单上传文件"""
        try:
            with open(self.upload_file_path, mode="rb") as f:
                file = {
                    "data": (self.upload_file_path, f.read()),
                    "app_id": self.app_id,
                    "request_id": self.get_request_id(),
                }
                encode_data = encode_multipart_formdata(file)
                file_data = encode_data[0]
                file_data_type = encode_data[1]
            url = LFASR_HOST + API_UPLOAD
            response = self.call_api(url, file_data, file_data_type)
            if response and "data" in response and "url" in response["data"]:
                return response["data"]["url"]
            else:
                print("简单上传失败", response)
                return None
        except FileNotFoundError:
            print("文件未找到:", self.upload_file_path)
            return None

    def multipart_upload(self):
        """分片上传文件"""
        upload_id = self.prepare_upload()
        if not upload_id:
            return None

        if not self.do_upload(upload_id):
            return None

        file_url = self.upload_cut_complete(upload_id)
        print("分片上传地址：", file_url)
        return file_url

    def prepare_upload(self):
        """预处理，获取upload_id"""
        body_dict = {
            "app_id": self.app_id,
            "request_id": self.get_request_id(),
        }
        url = LFASR_HOST + API_INIT
        file_data_type = "application/json"
        response = self.call_api(url, json.dumps(body_dict), file_data_type)
        if response and "data" in response and "upload_id" in response["data"]:
            return response["data"]["upload_id"]
        else:
            print("预处理失败", response)
            return None

    def do_upload(self, upload_id):
        """执行分片上传"""
        file_total_size = os.path.getsize(self.upload_file_path)
        chunk_size = FILE_PIECE_SIZE
        chunks = math.ceil(file_total_size / chunk_size)
        request_id = self.get_request_id()
        slice_id = 1

        print(
            "文件：",
            self.upload_file_path,
            " 文件大小：",
            file_total_size,
            " 分块大小：",
            chunk_size,
            " 分块数：",
            chunks,
        )

        with open(self.upload_file_path, mode="rb") as content:
            while slice_id <= chunks:
                current_size = min(
                    chunk_size, file_total_size - (slice_id - 1) * chunk_size
                )

                file = {
                    "data": (self.upload_file_path, content.read(current_size)),
                    "app_id": self.app_id,
                    "request_id": request_id,
                    "upload_id": upload_id,
                    "slice_id": slice_id,
                }

                encode_data = encode_multipart_formdata(file)
                file_data = encode_data[0]
                file_data_type = encode_data[1]
                url = LFASR_HOST + API_CUT

                resp = self.call_api(url, file_data, file_data_type)
                count = 0
                while not resp and (count < 3):
                    print("上传重试")
                    resp = self.call_api(url, file_data, file_data_type)
                    count = count + 1
                    time.sleep(1)
                if not resp:
                    print("分片上传失败")
                    return False
                slice_id += 1

        return True


class ResultExtractor:
    def __init__(self, appid, apikey, apisecret):
        # POST 请求相关参数
        self.Host = "ost-api.xfyun.cn"
        self.RequestUriCreate = PRO_CREATE_URI
        self.RequestUriQuery = QUERY_URI
        # 设置 URL
        if re.match(r"^\d", self.Host):
            self.urlCreate = "http://" + self.Host + self.RequestUriCreate
            self.urlQuery = "http://" + self.Host + self.RequestUriQuery
        else:
            self.urlCreate = "https://" + self.Host + self.RequestUriCreate
            self.urlQuery = "https://" + self.Host + self.RequestUriQuery
        self.HttpMethod = "POST"
        self.APPID = appid
        self.Algorithm = "hmac-sha256"
        self.HttpProto = "HTTP/1.1"
        self.UserName = apikey
        self.Secret = apisecret

        # 设置当前时间
        cur_time_utc = datetime.datetime.now(datetime.timezone.utc)
        self.Date = self.httpdate(cur_time_utc)

        # 设置测试音频文件参数
        self.BusinessArgsCreate = {
            "language": "zh_cn",
            "accent": "mandarin",
            "domain": "pro_ost_ed",
        }

    def img_read(self, path):
        with open(path, "rb") as fo:
            return fo.read()

    def hashlib_256(self, res):
        m = hashlib.sha256(bytes(res.encode(encoding="utf-8"))).digest()
        result = "SHA-256=" + base64.b64encode(m).decode(encoding="utf-8")
        return result

    def httpdate(self, dt):
        weekday = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"][dt.weekday()]
        month = [
            "Jan",
            "Feb",
            "Mar",
            "Apr",
            "May",
            "Jun",
            "Jul",
            "Aug",
            "Sep",
            "Oct",
            "Nov",
            "Dec",
        ][dt.month - 1]
        return "%s, %02d %s %04d %02d:%02d:%02d GMT" % (
            weekday,
            dt.day,
            month,
            dt.year,
            dt.hour,
            dt.minute,
            dt.second,
        )

    def generateSignature(self, digest, uri):
        signature_str = "host: " + self.Host + "\n"
        signature_str += "date: " + self.Date + "\n"
        signature_str += self.HttpMethod + " " + uri + " " + self.HttpProto + "\n"
        signature_str += "digest: " + digest
        signature = hmac.new(
            bytes(self.Secret.encode("utf-8")),
            bytes(signature_str.encode("utf-8")),
            digestmod=hashlib.sha256,
        ).digest()
        result = base64.b64encode(signature)
        return result.decode(encoding="utf-8")

    def init_header(self, data, uri):
        digest = self.hashlib_256(data)
        sign = self.generateSignature(digest, uri)
        auth_header = (
            'api_key="%s",algorithm="%s", '
            'headers="host date request-line digest", '
            'signature="%s"' % (self.UserName, self.Algorithm, sign)
        )
        headers = {
            "Content-Type": "application/json",
            "Accept": "application/json",
            "Method": "POST",
            "Host": self.Host,
            "Date": self.Date,
            "Digest": digest,
            "Authorization": auth_header,
        }
        return headers

    def get_create_body(self, fileurl):
        post_data = {
            "common": {"app_id": self.APPID},
            "business": self.BusinessArgsCreate,
            "data": {"audio_src": "http", "audio_url": fileurl, "encoding": "raw"},
        }
        body = json.dumps(post_data)
        return body

    def get_query_body(self, task_id):
        post_data = {
            "common": {"app_id": self.APPID},
            "business": {
                "task_id": task_id,
            },
        }
        body = json.dumps(post_data)
        return body

    def call(self, url, body, headers):
        try:
            response = requests.post(url, data=body, headers=headers, timeout=8)
            status_code = response.status_code
            if status_code != 200:
                info = response.content
                return info
            else:
                try:
                    return json.loads(response.text)
                except json.JSONDecodeError:
                    return response.text
        except Exception as e:
            print("Exception ：%s" % e)
            return None

    def task_create(self, fileurl):
        body = self.get_create_body(fileurl)
        headers_create = self.init_header(body, self.RequestUriCreate)
        return self.call(self.urlCreate, body, headers_create)

    def task_query(self, task_id):
        query_body = self.get_query_body(task_id)
        headers_query = self.init_header(query_body, self.RequestUriQuery)
        return self.call(self.urlQuery, query_body, headers_query)

    def extract_text(self, result):
        """
        从API响应中提取文本内容
        支持多种结果格式，增强错误处理
        """
        # 调试输出：打印原始结果类型
        print(f"\n[DEBUG] extract_text 输入类型: {type(result)}")

        # 如果是字符串，尝试解析为JSON
        if isinstance(result, str):
            print(f"[DEBUG] 字符串内容 (前200字符): {result[:200]}")
            try:
                result = json.loads(result)
                print("[DEBUG] 成功解析字符串为JSON对象")
            except json.JSONDecodeError:
                print("[DEBUG] 无法解析为JSON，返回原始字符串")
                return result

        # 处理字典类型的结果
        if isinstance(result, dict):
            print("[DEBUG] 处理字典类型结果")

            # 1. 检查错误信息
            if "code" in result and result["code"] != 0:
                error_msg = result.get("message", "未知错误")
                print(
                    f"[ERROR] API返回错误: code={result['code']}, message={error_msg}"
                )
                return f"错误: {error_msg}"

            # 2. 检查直接包含文本结果的情况
            if "result" in result and isinstance(result["result"], str):
                print("[DEBUG] 找到直接结果字段")
                return result["result"]

            # 3. 检查lattice结构（详细结果）
            if "lattice" in result and isinstance(result["lattice"], list):
                print("[DEBUG] 解析lattice结构")
                text_parts = []
                for lattice in result["lattice"]:
                    if not isinstance(lattice, dict):
                        continue

                    # 获取json_1best内容
                    json_1best = lattice.get("json_1best", {})
                    if not json_1best or not isinstance(json_1best, dict):
                        continue

                    # 处理st字段 - 修正：st可能是字典或列表
                    st_content = json_1best.get("st")
                    st_list = []
                    if isinstance(st_content, dict):
                        st_list = [st_content]  # 转为列表统一处理
                    elif isinstance(st_content, list):
                        st_list = st_content

                    for st in st_list:
                        if isinstance(st, str):
                            # 直接是字符串结果
                            text_parts.append(st)
                        elif isinstance(st, dict):
                            # 处理字典结构的st
                            rt = st.get("rt", [])
                            if not isinstance(rt, list):
                                continue

                            for item in rt:
                                if isinstance(item, dict):
                                    ws_list = item.get("ws", [])
                                    if isinstance(ws_list, list):
                                        for ws in ws_list:
                                            if isinstance(ws, dict):
                                                cw_list = ws.get("cw", [])
                                                if isinstance(cw_list, list):
                                                    for cw in cw_list:
                                                        if isinstance(cw, dict):
                                                            w = cw.get("w", "")
                                                            if w:
                                                                text_parts.append(w)
                return "".join(text_parts)

            # 4. 检查简化结构（直接包含st）
            if "st" in result and isinstance(result["st"], list):
                print("[DEBUG] 解析st结构")
                text_parts = []
                for st in result["st"]:
                    if isinstance(st, str):
                        text_parts.append(st)
                    elif isinstance(st, dict):
                        rt = st.get("rt", [])
                        if isinstance(rt, list):
                            for item in rt:
                                if isinstance(item, dict):
                                    ws_list = item.get("ws", [])
                                    if isinstance(ws_list, list):
                                        for ws in ws_list:
                                            if isinstance(ws, dict):
                                                cw_list = ws.get("cw", [])
                                                if isinstance(cw_list, list):
                                                    for cw in cw_list:
                                                        if isinstance(cw, dict):
                                                            w = cw.get("w", "")
                                                            if w:
                                                                text_parts.append(w)
                return "".join(text_parts)

            # 5. 其他未知结构
            print("[WARNING] 无法识别的结果结构")
            return json.dumps(result, indent=2, ensure_ascii=False)

        # 6. 非字典类型结果
        print(f"[WARNING] 非字典类型结果: {type(result)}")
        return str(result)


def audio_to_str(appid, apikey, apisecret, file_path):
    """
    调用讯飞开放平台接口，获取音频文件的转写结果。

    参数：
    appid (str): 讯飞开放平台的appid。
    apikey (str): 讯飞开放平台的apikey。
    apisecret (str): 讯飞开放平台的apisecret。
    file_path (str): 音频文件路径。

    返回值：
    str: 转写结果文本，如果发生错误则返回None。
    """
    # 检查文件是否存在
    if not os.path.exists(file_path):
        print(f"错误：文件 {file_path} 不存在")
        return None

    try:
        # 1. 文件上传
        file_uploader = FileUploader(
            app_id=appid,
            api_key=apikey,
            api_secret=apisecret,
            upload_file_path=file_path,
        )
        fileurl = file_uploader.upload_file()
        if not fileurl:
            print("文件上传失败")
            return None
        print("文件上传成功，fileurl:", fileurl)

        # 2. 创建任务并查询结果
        result_extractor = ResultExtractor(appid, apikey, apisecret)
        print("\n------ 创建任务 -------")
        create_response = result_extractor.task_create(fileurl)

        # 调试输出创建响应
        print(
            f"[DEBUG] 创建任务响应: {json.dumps(create_response, indent=2, ensure_ascii=False)}"
        )

        if not isinstance(create_response, dict) or "data" not in create_response:
            print("创建任务失败:", create_response)
            return None

        task_id = create_response["data"]["task_id"]
        print(f"任务ID: {task_id}")

        # 查询任务
        print("\n------ 查询任务 -------")
        print("任务转写中······")
        max_attempts = 30
        attempt = 0

        while attempt < max_attempts:
            result = result_extractor.task_query(task_id)

            # 调试输出查询响应
            print(f"\n[QUERY {attempt + 1}] 响应类型: {type(result)}")
            if isinstance(result, dict):
                print(
                    f"[QUERY {attempt + 1}] 响应内容: {json.dumps(result, indent=2, ensure_ascii=False)}"
                )
            else:
                print(
                    f"[QUERY {attempt + 1}] 响应内容 (前200字符): {str(result)[:200]}"
                )

            # 检查响应是否有效
            if not isinstance(result, dict):
                print(f"无效响应类型: {type(result)}")
                return None

            # 检查API错误码
            if "code" in result and result["code"] != 0:
                error_msg = result.get("message", "未知错误")
                print(f"API错误: code={result['code']}, message={error_msg}")
                return None

            # 获取任务状态
            task_data = result.get("data", {})
            task_status = task_data.get("task_status")

            if not task_status:
                print("响应中缺少任务状态字段")
                print("完整响应:", json.dumps(result, indent=2, ensure_ascii=False))
                return None

            # 处理不同状态
            if task_status in ["3", "4"]:  # 任务已完成或回调完成
                print("转写完成···")

                # 提取结果
                result_content = task_data.get("result")
                if result_content is not None:
                    try:
                        result_text = result_extractor.extract_text(result_content)
                        print("\n转写结果：\n", result_text)
                        return result_text
                    except Exception as e:
                        print(f"\n提取文本时出错: {str(e)}")
                        print(f"错误详情:\n{traceback.format_exc()}")
                        print(
                            "原始结果内容:",
                            json.dumps(result_content, indent=2, ensure_ascii=False),
                        )
                        return None
                else:
                    print("\n响应中缺少结果字段")
                    print("完整响应:", json.dumps(result, indent=2, ensure_ascii=False))
                    return None

            elif task_status in ["1", "2"]:  # 任务待处理或处理中
                print(
                    f"任务状态：{task_status}，等待中... (尝试 {attempt + 1}/{max_attempts})"
                )
                time.sleep(5)
                attempt += 1
            else:
                print(f"未知任务状态：{task_status}")
                print("完整响应:", json.dumps(result, indent=2, ensure_ascii=False))
                return None
        else:
            print(f"超过最大查询次数({max_attempts})，任务可能仍在处理中")
            return None

    except Exception as e:
        print(f"发生异常: {str(e)}")
        print(f"错误详情:\n{traceback.format_exc()}")
        return None


"""
1、通用文字识别,图像数据base64编码后大小不得超过10M
2、appid、apiSecret、apiKey请到讯飞开放平台控制台获取并填写到此demo中
3、支持中英文,支持手写和印刷文字。
4、在倾斜文字上效果有提升，同时支持部分生僻字的识别
"""

# 图像识别接口地址
URL = "https://api.xf-yun.com/v1/private/sf8e6aca1"


class AssembleHeaderException(Exception):
    def __init__(self, msg):
        self.message = msg


class Url:
    def __init__(self, host, path, schema):
        self.host = host
        self.path = path
        self.schema = schema
        pass


# calculate sha256 and encode to base64
def sha256base64(data):
    sha256 = hashlib.sha256()
    sha256.update(data)
    digest = base64.b64encode(sha256.digest()).decode(encoding="utf-8")
    return digest


def parse_url(requset_url):
    stidx = requset_url.index("://")
    host = requset_url[stidx + 3 :]
    schema = requset_url[: stidx + 3]
    edidx = host.index("/")
    if edidx <= 0:
        raise AssembleHeaderException("invalid request url:" + requset_url)
    path = host[edidx:]
    host = host[:edidx]
    u = Url(host, path, schema)
    return u


# build websocket auth request url
def assemble_ws_auth_url(requset_url, method="POST", api_key="", api_secret=""):
    u = parse_url(requset_url)
    host = u.host
    path = u.path
    now = datetime.datetime.now()
    date = format_date_time(mktime(now.timetuple()))
    # print(date) # 可选：打印Date值

    signature_origin = "host: {}\ndate: {}\n{} {} HTTP/1.1".format(
        host, date, method, path
    )
    # print(signature_origin)  # 可选：打印签名原文
    signature_sha = hmac.new(
        api_secret.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"'
        % (api_key, "hmac-sha256", "host date request-line", signature_sha)
    )
    authorization = base64.b64encode(authorization_origin.encode("utf-8")).decode(
        encoding="utf-8"
    )
    # print(authorization_origin) # 可选：打印鉴权原文
    values = {"host": host, "date": date, "authorization": authorization}

    return requset_url + "?" + urlencode(values)


def image_to_str(endpoint=None, key=None, unused_param=None, file_path=None):
    """
    调用Azure Computer Vision API识别图片中的文字。

    参数：
    endpoint (str): Azure Computer Vision endpoint URL。
    key (str): Azure Computer Vision API key。
    unused_param (str): 未使用的参数，保持兼容性。
    file_path (str): 图片文件路径。

    返回值：
    str: 图片中的文字识别结果，如果发生错误则返回None。
    """
    
    # 默认配置
    if endpoint is None:
        endpoint = "https://ai-siyuwang5414995ai361208251338.cognitiveservices.azure.com/"
    if key is None:
        key = "45PYY2Av9CdMCveAjVG43MGKrnHzSxdiFTK9mWBgrOsMAHavxKj0JQQJ99BDACHYHv6XJ3w3AAAAACOGeVpQ"

    try:
        # 读取图片文件
        with open(file_path, "rb") as f:
            image_data = f.read()

        # 构造请求URL
        analyze_url = endpoint.rstrip('/') + "/vision/v3.2/read/analyze"
        
        # 设置请求头
        headers = {
            'Ocp-Apim-Subscription-Key': key,
            'Content-Type': 'application/octet-stream'
        }
        
        # 发送POST请求开始分析
        response = requests.post(analyze_url, headers=headers, data=image_data)
        
        if response.status_code != 202:
            print(f"分析请求失败: {response.status_code}, {response.text}")
            return None
            
        # 获取操作位置
        operation_url = response.headers["Operation-Location"]
        
        # 轮询结果
        import time
        while True:
            result_response = requests.get(operation_url, headers={'Ocp-Apim-Subscription-Key': key})
            result = result_response.json()
            
            if result["status"] == "succeeded":
                # 提取文字
                text_results = []
                if "analyzeResult" in result and "readResults" in result["analyzeResult"]:
                    for read_result in result["analyzeResult"]["readResults"]:
                        for line in read_result["lines"]:
                            text_results.append(line["text"])
                
                return " ".join(text_results) if text_results else ""
                
            elif result["status"] == "failed":
                print(f"文字识别失败: {result}")
                return None
                
            # 等待1秒后重试
            time.sleep(1)
            
    except Exception as e:
        print(f"发生异常: {e}")
        return None


if __name__ == "__main__":
    # 输入讯飞开放平台的 appid，secret、key 和文件路径
    appid = "33c1b63d"
    apikey = "40bf7cd82e31ace30a9cfb76309a43a3"
    apisecret = "OTY1YzIyZWM3YTg0OWZiMGE2ZjA2ZmE4"
    audio_path = r"audio_sample_little.wav"  # 确保文件路径正确
    image_path = r"1.png"  # 确保文件路径正确

    # 音频转文字
    audio_text = audio_to_str(appid, apikey, apisecret, audio_path)
    # 图片转文字
    image_text = image_to_str(endpoint="https://ai-siyuwang5414995ai361208251338.cognitiveservices.azure.com/", key="45PYY2Av9CdMCveAjVG43MGKrnHzSxdiFTK9mWBgrOsMAHavxKj0JQQJ99BDACHYHv6XJ3w3AAAAACOGeVpQ", unused_param=None, file_path=image_path)
    
    print("-"* 20)

    print("\n音频转文字结果:", audio_text)
    print("\n图片转文字结果:", image_text)


def azure_speech_to_text(speech_key, speech_region, audio_file_path):
    """
    使用Azure Speech服务将音频文件转换为文本。
    
    参数：
    speech_key (str): Azure Speech服务的API密钥。
    speech_region (str): Azure Speech服务的区域。
    audio_file_path (str): 音频文件路径。
    
    返回值：
    str: 转换后的文本，如果发生错误则返回None。
    """
    try:
        # 设置语音配置
        speech_config = speechsdk.SpeechConfig(subscription=speech_key, region=speech_region)
        speech_config.speech_recognition_language = "zh-CN"  # 设置为中文
        
        # 设置音频配置
        audio_config = speechsdk.audio.AudioConfig(filename=audio_file_path)
        
        # 创建语音识别器
        speech_recognizer = speechsdk.SpeechRecognizer(speech_config=speech_config, audio_config=audio_config)
        
        # 执行语音识别
        result = speech_recognizer.recognize_once()
        
        # 检查识别结果
        if result.reason == speechsdk.ResultReason.RecognizedSpeech:
            print(f"Azure Speech识别成功: {result.text}")
            return result.text
        elif result.reason == speechsdk.ResultReason.NoMatch:
            print("Azure Speech未识别到语音")
            return None
        elif result.reason == speechsdk.ResultReason.Canceled:
            cancellation_details = result.cancellation_details
            print(f"Azure Speech识别被取消: {cancellation_details.reason}")
            if cancellation_details.reason == speechsdk.CancellationReason.Error:
                print(f"错误详情: {cancellation_details.error_details}")
            return None
    except Exception as e:
        print(f"Azure Speech识别出错: {str(e)}")
        return None