100 lines
3.2 KiB
Python
100 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
||
import hashlib
|
||
import hmac
|
||
import json
|
||
import sys
|
||
import time
|
||
import base64
|
||
from datetime import datetime
|
||
if sys.version_info[0] <= 2:
|
||
from httplib import HTTPSConnection
|
||
else:
|
||
from http.client import HTTPSConnection
|
||
|
||
|
||
def sign(key, msg):
|
||
return hmac.new(key, msg.encode("utf-8"), hashlib.sha256).digest()
|
||
|
||
|
||
with open("C:/Users/ec-users/Downloads/test.m4a", "rb") as f:
|
||
content = f.read()
|
||
encoded_audio = base64.b64encode(content)
|
||
|
||
# 在平台上查找对应key
|
||
secret_id = ""
|
||
secret_key = ""
|
||
token = ""
|
||
|
||
service = "asr"
|
||
host = "asr.tencentcloudapi.com"
|
||
region = ""
|
||
version = "2019-06-14"
|
||
action = "CreateRecTask"
|
||
payload = '{\"EngineModelType\":\"16k_zh\",\"ChannelNum\":1,\"ResTextFormat\":0,\"SourceType\":1,\"Data\":\"' + \
|
||
encoded_audio.decode("utf8") + '\"}'
|
||
params = json.loads(payload)
|
||
endpoint = "https://asr.tencentcloudapi.com"
|
||
algorithm = "TC3-HMAC-SHA256"
|
||
timestamp = int(time.time())
|
||
date = datetime.utcfromtimestamp(timestamp).strftime("%Y-%m-%d")
|
||
|
||
# ************* 步骤 1：拼接规范请求串 *************
|
||
http_request_method = "POST"
|
||
canonical_uri = "/"
|
||
canonical_querystring = ""
|
||
ct = "application/json; charset=utf-8"
|
||
canonical_headers = "content-type:%s\nhost:%s\nx-tc-action:%s\n" % (
|
||
ct, host, action.lower())
|
||
signed_headers = "content-type;host;x-tc-action"
|
||
hashed_request_payload = hashlib.sha256(payload.encode("utf-8")).hexdigest()
|
||
canonical_request = (http_request_method + "\n" +
|
||
canonical_uri + "\n" +
|
||
canonical_querystring + "\n" +
|
||
canonical_headers + "\n" +
|
||
signed_headers + "\n" +
|
||
hashed_request_payload)
|
||
|
||
# ************* 步骤 2：拼接待签名字符串 *************
|
||
credential_scope = date + "/" + service + "/" + "tc3_request"
|
||
hashed_canonical_request = hashlib.sha256(
|
||
canonical_request.encode("utf-8")).hexdigest()
|
||
string_to_sign = (algorithm + "\n" +
|
||
str(timestamp) + "\n" +
|
||
credential_scope + "\n" +
|
||
hashed_canonical_request)
|
||
|
||
# ************* 步骤 3：计算签名 *************
|
||
secret_date = sign(("TC3" + secret_key).encode("utf-8"), date)
|
||
secret_service = sign(secret_date, service)
|
||
secret_signing = sign(secret_service, "tc3_request")
|
||
signature = hmac.new(secret_signing, string_to_sign.encode(
|
||
"utf-8"), hashlib.sha256).hexdigest()
|
||
|
||
# ************* 步骤 4：拼接 Authorization *************
|
||
authorization = (algorithm + " " +
|
||
"Credential=" + secret_id + "/" + credential_scope + ", " +
|
||
"SignedHeaders=" + signed_headers + ", " +
|
||
"Signature=" + signature)
|
||
|
||
# ************* 步骤 5：构造并发起请求 *************
|
||
headers = {
|
||
"Authorization": authorization,
|
||
"Content-Type": "application/json; charset=utf-8",
|
||
"Host": host,
|
||
"X-TC-Action": action,
|
||
"X-TC-Timestamp": timestamp,
|
||
"X-TC-Version": version
|
||
}
|
||
if region:
|
||
headers["X-TC-Region"] = region
|
||
if token:
|
||
headers["X-TC-Token"] = token
|
||
|
||
try:
|
||
req = HTTPSConnection(host)
|
||
req.request("POST", "/", headers=headers, body=payload.encode("utf-8"))
|
||
resp = req.getresponse()
|
||
print(resp.read())
|
||
except Exception as err:
|
||
print(err)
|