help.py
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# 声明：本代码仅供学习和研究目的使用。使用者应遵守以下原则：
# 1. 不得用于任何商业用途。
# 2. 使用时应遵守目标平台的使用条款和robots.txt规则。
# 3. 不得进行大规模爬取或对平台造成运营干扰。
# 4. 应合理控制请求频率，避免给目标平台带来不必要的负担。
# 5. 不得用于任何非法或不当的用途。
#
# 详细许可条款请参阅项目根目录下的LICENSE文件。
# 使用本代码即表示您同意遵守上述原则和LICENSE中的所有条款。
# -*- coding: utf-8 -*-
# @Author : relakkes@gmail.com
# @Name : 程序员阿江-Relakkes
# @Time : 2024/6/10 02:24
# @Desc : 获取 a_bogus 参数, 学习交流使用，请勿用作商业用途，侵权联系作者删除
import random
import re
from typing import Optional
import execjs
from playwright.async_api import Page
from model.m_douyin import VideoUrlInfo, CreatorUrlInfo
from tools.crawler_util import extract_url_params_to_dict
douyin_sign_obj = execjs.compile(open('libs/douyin.js', encoding='utf-8-sig').read())
def get_web_id():
"""
生成随机的webid
Returns:
"""
def e(t):
if t is not None:
return str(t ^ (int(16 * random.random()) >> (t // 4)))
else:
return ''.join(
[str(int(1e7)), '-', str(int(1e3)), '-', str(int(4e3)), '-', str(int(8e3)), '-', str(int(1e11))]
)
web_id = ''.join(
e(int(x)) if x in '018' else x for x in e(None)
)
return web_id.replace('-', '')[:19]
async def get_a_bogus(url: str, params: str, post_data: dict, user_agent: str, page: Page = None):
"""
获取 a_bogus 参数, 目前不支持post请求类型的签名
"""
return get_a_bogus_from_js(url, params, user_agent)
def get_a_bogus_from_js(url: str, params: str, user_agent: str):
"""
通过js获取 a_bogus 参数
Args:
url:
params:
user_agent:
Returns:
"""
sign_js_name = "sign_datail"
if "/reply" in url:
sign_js_name = "sign_reply"
return douyin_sign_obj.call(sign_js_name, params, user_agent)
async def get_a_bogus_from_playright(params: str, post_data: dict, user_agent: str, page: Page):
"""
通过playright获取 a_bogus 参数
playwright版本已失效
Returns:
"""
if not post_data:
post_data = ""
a_bogus = await page.evaluate(
"([params, post_data, ua]) => window.bdms.init._v[2].p[42].apply(null, [0, 1, 8, params, post_data, ua])",
[params, post_data, user_agent])
return a_bogus
def parse_video_info_from_url(url: str) -> VideoUrlInfo:
"""
从抖音视频URL中解析出视频ID
支持以下格式:
1. 普通视频链接: https://www.douyin.com/video/7525082444551310602
2. 带modal_id参数的链接:
- https://www.douyin.com/user/MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE?modal_id=7525082444551310602
- https://www.douyin.com/root/search/python?modal_id=7471165520058862848
3. 短链接: https://v.douyin.com/iF12345ABC/ (需要client解析)
4. 纯ID: 7525082444551310602
Args:
url: 抖音视频链接或ID
Returns:
VideoUrlInfo: 包含视频ID的对象
"""
# 如果是纯数字ID,直接返回
if url.isdigit():
return VideoUrlInfo(aweme_id=url, url_type="normal")
# 检查是否是短链接 (v.douyin.com)
if "v.douyin.com" in url or url.startswith("http") and len(url) < 50 and "video" not in url:
return VideoUrlInfo(aweme_id="", url_type="short") # 需要通过client解析
# 尝试从URL参数中提取modal_id
params = extract_url_params_to_dict(url)
modal_id = params.get("modal_id")
if modal_id:
return VideoUrlInfo(aweme_id=modal_id, url_type="modal")
# 从标准视频URL中提取ID: /video/数字
video_pattern = r'/video/(\d+)'
match = re.search(video_pattern, url)
if match:
aweme_id = match.group(1)
return VideoUrlInfo(aweme_id=aweme_id, url_type="normal")
raise ValueError(f"无法从URL中解析出视频ID: {url}")
def parse_creator_info_from_url(url: str) -> CreatorUrlInfo:
"""
从抖音创作者主页URL中解析出创作者ID (sec_user_id)
支持以下格式:
1. 创作者主页: https://www.douyin.com/user/MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE?from_tab_name=main
2. 纯ID: MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE
Args:
url: 抖音创作者主页链接或sec_user_id
Returns:
CreatorUrlInfo: 包含创作者ID的对象
"""
# 如果是纯ID格式(通常以MS4wLjABAAAA开头),直接返回
if url.startswith("MS4wLjABAAAA") or (not url.startswith("http") and "douyin.com" not in url):
return CreatorUrlInfo(sec_user_id=url)
# 从创作者主页URL中提取sec_user_id: /user/xxx
user_pattern = r'/user/([^/?]+)'
match = re.search(user_pattern, url)
if match:
sec_user_id = match.group(1)
return CreatorUrlInfo(sec_user_id=sec_user_id)
raise ValueError(f"无法从URL中解析出创作者ID: {url}")
if __name__ == '__main__':
# 测试视频URL解析
print("=== 视频URL解析测试 ===")
test_urls = [
"https://www.douyin.com/video/7525082444551310602",
"https://www.douyin.com/user/MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE?from_tab_name=main&modal_id=7525082444551310602",
"https://www.douyin.com/root/search/python?aid=b733a3b0-4662-4639-9a72-c2318fba9f3f&modal_id=7471165520058862848&type=general",
"7525082444551310602",
]
for url in test_urls:
try:
result = parse_video_info_from_url(url)
print(f"✓ URL: {url[:80]}...")
print(f" 结果: {result}\n")
except Exception as e:
print(f"✗ URL: {url}")
print(f" 错误: {e}\n")
# 测试创作者URL解析
print("=== 创作者URL解析测试 ===")
test_creator_urls = [
"https://www.douyin.com/user/MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE?from_tab_name=main",
"MS4wLjABAAAATJPY7LAlaa5X-c8uNdWkvz0jUGgpw4eeXIwu_8BhvqE",
]
for url in test_creator_urls:
try:
result = parse_creator_info_from_url(url)
print(f"✓ URL: {url[:80]}...")
print(f" 结果: {result}\n")
except Exception as e:
print(f"✗ URL: {url}")
print(f" 错误: {e}\n")