164 lines
6.9 KiB
Python
164 lines
6.9 KiB
Python
# _*_ coding : UTF-8 _*_
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# @Time : 2024-01-17 14:24:59
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# @Author : haochen zhong
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# @File : CrawlHainan.py
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# @Software : PyCharm
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# @Comment :
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import random
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import re
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import time
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from datetime import timedelta, datetime
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import pymongo
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import requests
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from bs4 import BeautifulSoup
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# 数据库起止时间
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start_date = datetime.strptime('2008-02-29', '%Y-%m-%d')
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end_date = datetime.today()
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headers = {
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'User-Agent': 'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.42'}
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# 创建数据库
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client = pymongo.MongoClient('localhost', 27017)
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mydb = client.dfdm_sjribao
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hainanribao = mydb.hainanribao
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def main():
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# 判断数据库是否存在
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collist = mydb.list_collection_names()
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if "hainanribao" in collist: # 检测集合是否存在
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print("海南日报集合存在，更新数据库")
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# 数据库最新一条内容的时间
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db_time = hainanribao.find_one(sort=[('release_time', -1)])['release_time']
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print(f'数据库截止时间{db_time}')
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# 输入更新数据库时间
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input_time = datetime.today()
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if db_time < input_time:
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getData(db_time, input_time)
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else:
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print('数据库无需更新')
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else:
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print("数据库不存在，建立数据库")
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# 爬取网页并建立数据库
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getData(start_date, end_date)
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# 解析网页正文
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def parse_html_text(soup):
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"""
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:param html: html字符串
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:return: 正文 string
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"""
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content = ''
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if soup.select('#ozoom'):
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content = soup.select('#ozoom')[0].text.strip()
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return content
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def parse_subtitle(soup):
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item = soup.select('.font02')
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if re.findall(r'article-subtitle>-->(.*?)<!--', str(item)):
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subtitle = re.findall(r'article-subtitle>-->(.*?)<!--', str(item))[0]
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else:
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subtitle = ''
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return subtitle
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def parse_h3title(soup):
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item = soup.select('.font02')
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if re.findall(r'article-pretitle>-->(.*?)<!--', str(item)):
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h3title = re.findall(r'article-pretitle>-->(.*?)<!--', str(item))[0]
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else:
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h3title = ''
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return h3title
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def parse_author(soup):
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item = soup.select('.font02')
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if re.findall(r'article-subtitle>-->(.*?)<!--', str(item)):
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author = re.findall(r'article-subtitle>-->(.*?)<!--', str(item))[0]
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else:
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author = ''
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return author
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# 爬取网页并建立数据库
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def getData(start_date, end_date):
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crawl_num = 0
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for i in range((end_date - start_date).days):
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date_now = start_date + timedelta(days=i + 1)
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date_now_s = date_now.strftime('%Y-%m/%d')
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base_url = "http://news.hndaily.cn/html/" + date_now_s + '/'
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url = base_url + 'node_1.htm'
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# 进入首页
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try:
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response = requests.get(url, headers=headers)
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response.encoding = response.apparent_encoding
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print(f'一级连接状态{response.status_code}')
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if response.status_code == 200:
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soup = BeautifulSoup(response.text, "lxml")
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for item in soup.select('#pageLink'):
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banmianhao = item.text.split("：")[0].strip()
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banmianming = item.text.split("：")[-1].strip()
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if banmianming == "广告":
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continue
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url1 = base_url + item.get('href')
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response2 = requests.get(url1, headers=headers)
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response2.encoding = response2.apparent_encoding
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print(f'二级连接状态{response2.status_code}')
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if response2.status_code == 200:
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soup1 = BeautifulSoup(response2.text, "lxml")
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for item1 in soup1.select('#main-ed-articlenav-list tr td div a'):
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detail_url = base_url + item1.get('href')
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print(detail_url)
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title = item1.text.strip()
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response3 = requests.get(detail_url, headers=headers)
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response3.encoding = response3.apparent_encoding
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print(f'三级连接状态:{response3.status_code}')
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if response3.status_code == 200:
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soup2 = BeautifulSoup(response3.text, "lxml")
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try:
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title = soup2.select('.font01')[0].text.strip()
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except IndexError:
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pass
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subtitle = parse_subtitle(soup2)
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h3title = parse_h3title(soup2)
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author = parse_author(soup2)
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content = parse_html_text(soup2)
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hainanribao.insert_one({'banmianhao': banmianhao,
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'banmianming': banmianming,
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'title': title,
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'subtitle': subtitle,
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'h3title': h3title,
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'author': author,
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'keywordlist': '',
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'detail_url': detail_url,
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'release_time': date_now,
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'insert_timestamp': datetime.today(),
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'content': content})
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print(f"海南日报-{date_now_s}-{banmianhao}-{banmianming}-{title}已经完成")
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crawl_num += 1
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time.sleep(random.randint(3, 10))
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print(f"海南日报-{date_now_s}-{banmianhao}-{banmianming}-已经完成")
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time.sleep(random.randint(3, 10))
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print(f"海南日报-{date_now_s}-已经完成")
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except Exception as result:
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hainanribao.insert_one({'banmianhao': 'empty',
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'banmianming': 'empty',
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'title': 'empty',
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'subtitle': 'empty',
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'h3title': 'empty',
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'author': 'empty',
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'keywordlist': 'empty',
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'detail_url': url,
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'release_time': date_now,
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'insert_timestamp': datetime.today(),
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'content': 'empty'})
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print(result)
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print(f"海南日报采集完毕，本次共采集{crawl_num}条数据！")
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if __name__ == "__main__":
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main()
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