486 lines
17 KiB
Python
486 lines
17 KiB
Python
import asyncio
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import json
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import re
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from typing import Any, Callable, Dict, List, Optional, Union
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from urllib.parse import urlencode
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import httpx
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from playwright.async_api import BrowserContext, Page
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from tenacity import retry, stop_after_attempt, wait_fixed
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import config
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from base.base_crawler import AbstractApiClient
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from tools import utils
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from .exception import DataFetchError, IPBlockError
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from .field import SearchNoteType, SearchSortType
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from .help import get_search_id, sign
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class XiaoHongShuClient(AbstractApiClient):
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def __init__(
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self,
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timeout=10,
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proxies=None,
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*,
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headers: Dict[str, str],
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playwright_page: Page,
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cookie_dict: Dict[str, str],
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):
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self.proxies = proxies
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self.timeout = timeout
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self.headers = headers
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self._host = "https://edith.xiaohongshu.com"
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self._domain = "https://www.xiaohongshu.com"
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self.IP_ERROR_STR = "网络连接异常，请检查网络设置或重启试试"
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self.IP_ERROR_CODE = 300012
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self.NOTE_ABNORMAL_STR = "笔记状态异常，请稍后查看"
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self.NOTE_ABNORMAL_CODE = -510001
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self.playwright_page = playwright_page
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self.cookie_dict = cookie_dict
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async def _pre_headers(self, url: str, data=None) -> Dict:
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"""
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请求头参数签名
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Args:
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url:
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data:
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Returns:
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"""
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encrypt_params = await self.playwright_page.evaluate("([url, data]) => window._webmsxyw(url,data)", [url, data])
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local_storage = await self.playwright_page.evaluate("() => window.localStorage")
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signs = sign(
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a1=self.cookie_dict.get("a1", ""),
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b1=local_storage.get("b1", ""),
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x_s=encrypt_params.get("X-s", ""),
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x_t=str(encrypt_params.get("X-t", ""))
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)
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headers = {
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"X-S": signs["x-s"],
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"X-T": signs["x-t"],
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"x-S-Common": signs["x-s-common"],
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"X-B3-Traceid": signs["x-b3-traceid"]
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}
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self.headers.update(headers)
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return self.headers
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@retry(stop=stop_after_attempt(3), wait=wait_fixed(1))
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async def request(self, method, url, **kwargs) -> Union[str, Any]:
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"""
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封装httpx的公共请求方法，对请求响应做一些处理
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Args:
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method: 请求方法
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url: 请求的URL
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**kwargs: 其他请求参数，例如请求头、请求体等
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Returns:
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"""
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# return response.text
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return_response = kwargs.pop('return_response', False)
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async with httpx.AsyncClient(proxies=self.proxies) as client:
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response = await client.request(
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method, url, timeout=self.timeout,
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**kwargs
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)
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if return_response:
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return response.text
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data: Dict = response.json()
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if data["success"]:
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return data.get("data", data.get("success", {}))
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elif data["code"] == self.IP_ERROR_CODE:
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raise IPBlockError(self.IP_ERROR_STR)
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else:
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raise DataFetchError(data.get("msg", None))
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async def get(self, uri: str, params=None) -> Dict:
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"""
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GET请求，对请求头签名
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Args:
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uri: 请求路由
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params: 请求参数
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Returns:
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"""
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final_uri = uri
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if isinstance(params, dict):
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final_uri = (f"{uri}?"
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f"{urlencode(params)}")
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headers = await self._pre_headers(final_uri)
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return await self.request(method="GET", url=f"{self._host}{final_uri}", headers=headers)
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async def post(self, uri: str, data: dict, **kwargs) -> Dict:
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"""
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POST请求，对请求头签名
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Args:
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uri: 请求路由
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data: 请求体参数
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Returns:
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"""
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headers = await self._pre_headers(uri, data)
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json_str = json.dumps(data, separators=(',', ':'), ensure_ascii=False)
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return await self.request(method="POST", url=f"{self._host}{uri}",
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data=json_str, headers=headers, **kwargs)
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async def get_note_media(self, url: str) -> Union[bytes, None]:
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async with httpx.AsyncClient(proxies=self.proxies) as client:
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response = await client.request("GET", url, timeout=self.timeout)
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if not response.reason_phrase == "OK":
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utils.logger.error(f"[XiaoHongShuClient.get_note_media] request {url} err, res:{response.text}")
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return None
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else:
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return response.content
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async def pong(self) -> bool:
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"""
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用于检查登录态是否失效了
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Returns:
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"""
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"""get a note to check if login state is ok"""
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utils.logger.info("[XiaoHongShuClient.pong] Begin to pong xhs...")
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ping_flag = False
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try:
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note_card: Dict = await self.get_note_by_keyword(keyword="小红书")
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if note_card.get("items"):
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ping_flag = True
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except Exception as e:
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utils.logger.error(f"[XiaoHongShuClient.pong] Ping xhs failed: {e}, and try to login again...")
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ping_flag = False
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return ping_flag
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async def update_cookies(self, browser_context: BrowserContext):
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"""
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API客户端提供的更新cookies方法，一般情况下登录成功后会调用此方法
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Args:
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browser_context: 浏览器上下文对象
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Returns:
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"""
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cookie_str, cookie_dict = utils.convert_cookies(await browser_context.cookies())
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self.headers["Cookie"] = cookie_str
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self.cookie_dict = cookie_dict
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async def get_note_by_keyword(
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self, keyword: str,
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page: int = 1, page_size: int = 20,
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sort: SearchSortType = SearchSortType.GENERAL,
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note_type: SearchNoteType = SearchNoteType.ALL
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) -> Dict:
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"""
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根据关键词搜索笔记
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Args:
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keyword: 关键词参数
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page: 分页第几页
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page_size: 分页数据长度
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sort: 搜索结果排序指定
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note_type: 搜索的笔记类型
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Returns:
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"""
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uri = "/api/sns/web/v1/search/notes"
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data = {
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"keyword": keyword,
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"page": page,
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"page_size": page_size,
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"search_id": get_search_id(),
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"sort": sort.value,
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"note_type": note_type.value
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}
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return await self.post(uri, data)
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async def get_note_by_id(self, note_id: str, xsec_source: str, xsec_token: str) -> Dict:
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"""
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获取笔记详情API
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Args:
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note_id:笔记ID
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xsec_source: 渠道来源
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xsec_token: 搜索关键字之后返回的比较列表中返回的token
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Returns:
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"""
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if xsec_source == "":
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xsec_source = "pc_search"
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data = {
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"source_note_id": note_id,
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"image_formats": ["jpg", "webp", "avif"],
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"extra": {"need_body_topic": 1},
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"xsec_source": xsec_source,
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"xsec_token": xsec_token
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}
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uri = "/api/sns/web/v1/feed"
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res = await self.post(uri, data)
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if res and res.get("items"):
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res_dict: Dict = res["items"][0]["note_card"]
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return res_dict
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# 爬取频繁了可能会出现有的笔记能有结果有的没有
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utils.logger.error(f"[XiaoHongShuClient.get_note_by_id] get note id:{note_id} empty and res:{res}")
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return dict()
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async def get_note_comments(self, note_id: str, cursor: str = "") -> Dict:
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"""
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获取一级评论的API
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Args:
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note_id: 笔记ID
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cursor: 分页游标
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Returns:
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"""
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uri = "/api/sns/web/v2/comment/page"
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params = {
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"note_id": note_id,
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"cursor": cursor,
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"top_comment_id": "",
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"image_formats": "jpg,webp,avif"
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}
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return await self.get(uri, params)
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async def get_note_sub_comments(self, note_id: str, root_comment_id: str, num: int = 10, cursor: str = ""):
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"""
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获取指定父评论下的子评论的API
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Args:
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note_id: 子评论的帖子ID
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root_comment_id: 根评论ID
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num: 分页数量
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cursor: 分页游标
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Returns:
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"""
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uri = "/api/sns/web/v2/comment/sub/page"
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params = {
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"note_id": note_id,
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"root_comment_id": root_comment_id,
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"num": num,
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"cursor": cursor,
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}
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return await self.get(uri, params)
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async def get_note_all_comments(self, note_id: str, crawl_interval: float = 1.0,
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callback: Optional[Callable] = None) -> List[Dict]:
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"""
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获取指定笔记下的所有一级评论，该方法会一直查找一个帖子下的所有评论信息
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Args:
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note_id: 笔记ID
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crawl_interval: 爬取一次笔记的延迟单位（秒）
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callback: 一次笔记爬取结束后
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Returns:
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"""
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result = []
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comments_has_more = True
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comments_cursor = ""
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while comments_has_more:
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comments_res = await self.get_note_comments(note_id, comments_cursor)
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comments_has_more = comments_res.get("has_more", False)
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comments_cursor = comments_res.get("cursor", "")
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if "comments" not in comments_res:
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utils.logger.info(
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f"[XiaoHongShuClient.get_note_all_comments] No 'comments' key found in response: {comments_res}")
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break
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comments = comments_res["comments"]
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if callback:
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await callback(note_id, comments)
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await asyncio.sleep(crawl_interval)
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result.extend(comments)
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sub_comments = await self.get_comments_all_sub_comments(comments, crawl_interval, callback)
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result.extend(sub_comments)
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return result
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async def get_comments_all_sub_comments(self, comments: List[Dict], crawl_interval: float = 1.0,
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callback: Optional[Callable] = None) -> List[Dict]:
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"""
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获取指定一级评论下的所有二级评论, 该方法会一直查找一级评论下的所有二级评论信息
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Args:
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comments: 评论列表
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crawl_interval: 爬取一次评论的延迟单位（秒）
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callback: 一次评论爬取结束后
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Returns:
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"""
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if not config.ENABLE_GET_SUB_COMMENTS:
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utils.logger.info(
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f"[XiaoHongShuCrawler.get_comments_all_sub_comments] Crawling sub_comment mode is not enabled")
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return []
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result = []
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for comment in comments:
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note_id = comment.get("note_id")
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sub_comments = comment.get("sub_comments")
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if sub_comments and callback:
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await callback(note_id, sub_comments)
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sub_comment_has_more = comment.get("sub_comment_has_more")
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if not sub_comment_has_more:
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continue
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root_comment_id = comment.get("id")
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sub_comment_cursor = comment.get("sub_comment_cursor")
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while sub_comment_has_more:
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comments_res = await self.get_note_sub_comments(note_id, root_comment_id, 10, sub_comment_cursor)
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sub_comment_has_more = comments_res.get("has_more", False)
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sub_comment_cursor = comments_res.get("cursor", "")
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if "comments" not in comments_res:
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utils.logger.info(
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f"[XiaoHongShuClient.get_comments_all_sub_comments] No 'comments' key found in response: {comments_res}")
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break
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comments = comments_res["comments"]
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if callback:
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await callback(note_id, comments)
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await asyncio.sleep(crawl_interval)
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result.extend(comments)
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return result
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async def get_creator_info(self, user_id: str) -> Dict:
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"""
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通过解析网页版的用户主页HTML，获取用户个人简要信息
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PC端用户主页的网页存在window.__INITIAL_STATE__这个变量上的，解析它即可
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eg: https://www.xiaohongshu.com/user/profile/59d8cb33de5fb4696bf17217
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"""
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uri = f"/user/profile/{user_id}"
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html_content = await self.request("GET", self._domain + uri, return_response=True, headers=self.headers)
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match = re.search(r'<script>window.__INITIAL_STATE__=(.+)<\/script>', html_content, re.M)
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if match is None:
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return {}
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info = json.loads(match.group(1).replace(':undefined', ':null'), strict=False)
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if info is None:
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return {}
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return info.get('user').get('userPageData')
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async def get_notes_by_creator(
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self, creator: str,
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cursor: str,
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page_size: int = 30
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) -> Dict:
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"""
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获取博主的笔记
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Args:
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creator: 博主ID
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cursor: 上一页最后一条笔记的ID
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page_size: 分页数据长度
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Returns:
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"""
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uri = "/api/sns/web/v1/user_posted"
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data = {
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"user_id": creator,
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"cursor": cursor,
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"num": page_size,
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"image_formats": "jpg,webp,avif"
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}
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return await self.get(uri, data)
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async def get_all_notes_by_creator(self, user_id: str, crawl_interval: float = 1.0,
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callback: Optional[Callable] = None) -> List[Dict]:
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"""
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获取指定用户下的所有发过的帖子，该方法会一直查找一个用户下的所有帖子信息
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Args:
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user_id: 用户ID
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crawl_interval: 爬取一次的延迟单位（秒）
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callback: 一次分页爬取结束后的更新回调函数
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Returns:
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"""
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result = []
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notes_has_more = True
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notes_cursor = ""
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while notes_has_more:
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notes_res = await self.get_notes_by_creator(user_id, notes_cursor)
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if not notes_res:
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utils.logger.error(
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f"[XiaoHongShuClient.get_notes_by_creator] The current creator may have been banned by xhs, so they cannot access the data.")
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break
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notes_has_more = notes_res.get("has_more", False)
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notes_cursor = notes_res.get("cursor", "")
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if "notes" not in notes_res:
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utils.logger.info(
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f"[XiaoHongShuClient.get_all_notes_by_creator] No 'notes' key found in response: {notes_res}")
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break
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notes = notes_res["notes"]
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utils.logger.info(
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f"[XiaoHongShuClient.get_all_notes_by_creator] got user_id:{user_id} notes len : {len(notes)}")
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if callback:
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await callback(notes)
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await asyncio.sleep(crawl_interval)
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result.extend(notes)
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return result
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async def get_note_short_url(self, note_id: str) -> Dict:
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"""
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获取笔记的短链接
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Args:
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note_id: 笔记ID
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Returns:
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"""
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uri = f"/api/sns/web/short_url"
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data = {
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"original_url": f"{self._domain}/discovery/item/{note_id}"
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}
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return await self.post(uri, data=data, return_response=True)
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async def get_note_by_id_from_html(self, note_id: str):
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"""
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通过解析网页版的笔记详情页HTML，获取笔记详情
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copy from https://github.com/ReaJason/xhs/blob/eb1c5a0213f6fbb592f0a2897ee552847c69ea2d/xhs/core.py#L217-L259
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thanks for ReaJason
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Args:
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note_id:
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Returns:
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"""
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def camel_to_underscore(key):
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return re.sub(r"(?<!^)(?=[A-Z])", "_", key).lower()
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def transform_json_keys(json_data):
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data_dict = json.loads(json_data)
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dict_new = {}
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for key, value in data_dict.items():
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new_key = camel_to_underscore(key)
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if not value:
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dict_new[new_key] = value
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elif isinstance(value, dict):
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dict_new[new_key] = transform_json_keys(json.dumps(value))
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elif isinstance(value, list):
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dict_new[new_key] = [
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transform_json_keys(json.dumps(item))
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if (item and isinstance(item, dict))
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else item
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for item in value
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]
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else:
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dict_new[new_key] = value
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return dict_new
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url = "https://www.xiaohongshu.com/explore/" + note_id
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html = await self.request(method="GET", url=url, return_response=True, headers=self.headers)
|
||
state = re.findall(r"window.__INITIAL_STATE__=({.*})</script>", html)[0].replace("undefined", '""')
|
||
if state != "{}":
|
||
note_dict = transform_json_keys(state)
|
||
return note_dict["note"]["note_detail_map"][note_id]["note"]
|
||
raise DataFetchError(html)
|