108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
import json
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import requests
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from bs4 import BeautifulSoup
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from datetime import datetime
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import time
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import random
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from tenacity import (
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retry,
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stop_after_attempt,
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wait_exponential,
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retry_if_exception_type,
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retry_if_result,
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)
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def is_rate_limited(response):
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"""檢查回應是否表示速率限制 (狀態碼 429)"""
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return response.status_code == 429
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@retry(
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retry=(retry_if_result(is_rate_limited)),
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wait=wait_exponential(multiplier=1, min=4, max=60),
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stop=stop_after_attempt(5),
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)
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def make_request(url, headers):
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"""使用重試邏輯發出請求以處理速率限制"""
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# 在每個請求前隨機延遲以避免被偵測
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time.sleep(random.uniform(2, 6))
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response = requests.get(url, headers=headers)
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return response
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def getNewsData(query, start_date, end_date):
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"""
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抓取給定查詢和日期範圍的 Google 新聞搜索結果。
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query: str - 搜索查詢
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start_date: str - 開始日期，格式為 yyyy-mm-dd 或 mm/dd/yyyy
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end_date: str - 結束日期，格式為 yyyy-mm-dd 或 mm/dd/yyyy
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"""
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if "-" in start_date:
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start_date = datetime.strptime(start_date, "%Y-%m-%d")
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start_date = start_date.strftime("%m/%d/%Y")
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if "-" in end_date:
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end_date = datetime.strptime(end_date, "%Y-%m-%d")
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end_date = end_date.strftime("%m/%d/%Y")
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headers = {
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"User-Agent": (
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
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"AppleWebKit/537.36 (KHTML, like Gecko) "
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"Chrome/101.0.4951.54 Safari/537.36"
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)
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}
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news_results = []
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page = 0
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while True:
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offset = page * 10
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url = (
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f"https://www.google.com/search?q={query}"
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f"&tbs=cdr:1,cd_min:{start_date},cd_max:{end_date}"
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f"&tbm=nws&start={offset}"
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)
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try:
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response = make_request(url, headers)
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soup = BeautifulSoup(response.content, "html.parser")
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results_on_page = soup.select("div.SoaBEf")
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if not results_on_page:
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break # 找不到更多結果
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for el in results_on_page:
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try:
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link = el.find("a")["href"]
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title = el.select_one("div.MBeuO").get_text()
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snippet = el.select_one(".GI74Re").get_text()
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date = el.select_one(".LfVVr").get_text()
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source = el.select_one(".NUnG9d span").get_text()
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news_results.append(
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{
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"link": link,
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"title": title,
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"snippet": snippet,
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"date": date,
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"source": source,
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}
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)
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except Exception as e:
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print(f"處理結果時出錯：{e}")
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# 如果找不到其中一個欄位，則跳過此結果
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continue
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# 使用當前抓取的結果數量更新進度條
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# 檢查「下一頁」連結 (分頁)
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next_link = soup.find("a", id="pnnext")
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if not next_link:
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break
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page += 1
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except Exception as e:
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print(f"多次重試後失敗：{e}")
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break
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return news_results |