142 lines
6.5 KiB
Python
142 lines
6.5 KiB
Python
# _*_ coding : UTF-8 _*_
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# @Time : 2022/12/29 13:48
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# @Author : Haochen Zhong
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# @File : CrawlNingxia.py
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# @Software : PyCharm
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# @Comment : 本程序采集宁夏日报版面数据
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import random
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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('2022-01-31', '%Y-%m-%d')
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"""宁夏日报2022-02-01开始有数据"""
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end_date = datetime.today()
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headers = {
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36'}
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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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ningxiaribao = mydb.ningxiaribao
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# 设置随机时间
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sleeptime = random.randint(2, 10)
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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 "ningxiaribao" in collist: # 检测集合是否存在
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print("宁夏集合存在，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 = ningxiaribao.find_one(sort=[('release_time', -1)])[
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'release_time'] # 或者find().sort('_id', -1).limit(1)
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print('数据库截止时间%s' % 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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# 爬取网页并建立数据库
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print("数据库不存在，建立数据库！")
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getData(start_date, end_date)
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def get_content(soup3):
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content = ""
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for p in soup3.select("#ozoom p"):
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para = p.text.strip()
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if para:
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content += para
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content += '\n'
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return content
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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): # gu:时间长度
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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 = "https://szb.nxrb.cn/nxrb/pc/layout/" + date_now_s + "/"
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url = base_url + "node_01.html"
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# https://szb.nxrb.cn/nxrb/pc/layout/202202/01/node_01.html
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try:
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response = requests.get(url=url, headers=headers, timeout=(30, 45))
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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(".nav-list .btn-block"):
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banmianhao = item.text.split("：")[0].strip()
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banmianming = item.text.split("：")[-1].strip()
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url1 = base_url + item.get("href")
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response2 = requests.get(url=url1, headers=headers, timeout=(30, 45))
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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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soup2 = BeautifulSoup(response2.text, "lxml")
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for item2 in soup2.select(".news-list .resultList a"):
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url_title = item2.text.strip()
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url2 = "https://szb.nxrb.cn/nxrb/pc/" + item2.get("href")[9:]
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print(url2)
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response3 = requests.get(url=url2, headers=headers, timeout=(30, 45))
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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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soup3 = BeautifulSoup(response3.text, "lxml")
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try:
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pretitle = soup3.select("#PreTitle")[0].text.strip()
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except:
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pretitle = ""
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try:
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title = soup3.select("#Title")[0].text.strip()
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except:
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title = url_title
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try:
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subtitle = soup3.select("SubTitle")[0].text.strip()
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except:
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subtitle = ""
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content = get_content(soup3)
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ningxiaribao.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': pretitle,
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'author': '',
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'keywordlist': 'empty',
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'detail_url': url2,
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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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crawl_num += 1
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print(f"宁夏日报-{date_now_s}-{banmianhao}-{title}-已完成")
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time.sleep(sleeptime)
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print(f"宁夏日报-{date_now_s}-{banmianhao}-已完成")
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time.sleep(sleeptime)
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print(f"宁夏日报-{date_now_s}-已完成")
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time.sleep(sleeptime)
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except Exception as result:
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ningxiaribao.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"宁夏日报采集完成，成功采集{crawl_num}条数据！")
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if __name__ == '__main__':
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main()
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