245 lines
14 KiB
Python
245 lines
14 KiB
Python
# -*- coding = utf-8 -*-
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# @Time : 2021/12/2 20:34
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# @Author : Hongshuang Gu
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# @File : Crawlqiushi.py
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# @Software : PyCharm
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import asyncio
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import random
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from datetime import datetime
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import pandas as pd
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from bs4 import BeautifulSoup
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from httpx import AsyncClient
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from motor.motor_asyncio import AsyncIOMotorClient
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# 链接数据库
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client = AsyncIOMotorClient('mongodb://localhost:27017')
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db = client['zydm']
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collection = db['qiushi']
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# 数据库起止时间
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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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async def main():
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# 判断数据库是否存在
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collist = await db.list_collection_names()
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if "qiushi" in collist: # 检测集合是否存在
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print("求是集合存在，更新数据库")
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searchRes = await collection.find({}).to_list(length=None)
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Res = pd.DataFrame(list(searchRes))
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h1 = Res['title'].drop_duplicates().reset_index()
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# 输入更新数据库时间
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await upDate(h1)
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else:
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await getDate()
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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 = '' # gu:建了一个字符串
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for p in soup.select('.highlight 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 parse_author(soup):
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all_name = soup.select('.appellation')
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if all_name:
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name = all_name[-1].text
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else:
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name = ''
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return name
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# 爬取网页并建立数据库
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async def getDate():
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url = "http://www.qstheory.cn/qs/mulu.htm"
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# 进入首页
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try:
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async with AsyncClient(headers=headers) as client:
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response = await client.get(url)
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response.encoding = response.charset_encoding
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print('一级连接状态%d' % 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('.booktitle a'):
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book_link = item.get('href')
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if "http" not in book_link:
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book_link = "http://www.qstheory.cn" + book_link.replace("..", "").strip()
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year = item.text
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response2 = await client.get(book_link)
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response2.encoding = response2.charset_encoding
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print('二级连接状态%d' % 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('.highlight p a'):
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if '《求是》' in item1.text:
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banmianhao = item1.text.split("第")[-1].replace("期", "").strip()
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banmianming = '求是' + year
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yaowen_link = item1.get('href')
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response3 = await client.get(yaowen_link)
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response3.encoding = response3.charset_encoding
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print('三级连接状态%d' % 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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for item2 in soup2.select('.text p a'):
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link = item2.get('href')
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title = item2.text.strip()
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response4 = await client.get(link, )
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response4.encoding = response4.charset_encoding
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print('四级连接状态%d' % response4.status_code)
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if response4.status_code == 200:
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soup3 = BeautifulSoup(response4.text, "lxml")
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if soup3.select('h1'):
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author = parse_author(soup3)
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if soup3.select('.pubtime'):
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str_time = soup3.select('.pubtime')[0].text.strip()
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release_time = datetime.strptime(str_time, '%Y-%m-%d %H:%M:%S')
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else:
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str_time = soup3.select('.headtitle span')[0].text.strip()
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release_time = datetime.strptime(str_time, '%Y年%m月%d日 %H:%M:%S')
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content = parse_html_text(soup3)
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await collection.insert_one({'banmianhao': banmianhao,
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'banmianming': banmianming,
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'title': title,
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'subtitle': 'empty',
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'author': author,
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'keywordlist': 'empty',
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'detail_url': link,
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'release_time': release_time,
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'insert_timestamp': datetime.today(),
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'content': content})
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print("%s-%s-%s已完成" % (release_time, banmianhao, title))
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else:
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await collection.insert_one({'banmianhao': banmianhao,
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'banmianming': banmianming,
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'title': title,
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'subtitle': 'empty',
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'author': 'empty',
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'keywordlist': 'empty',
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'detail_url': link,
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'release_time': 'empty',
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'insert_timestamp': datetime.today(),
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'content': 'empty'})
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print("%s无内容" % (title))
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await asyncio.sleep(random.randint(5, 20))
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except Exception as result:
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# 改天数据为空
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await collection.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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'author': 'empty',
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'keywordlist': 'empty',
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'detail_url': url,
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'release_time': 'empty',
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'insert_timestamp': datetime.today(),
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'content': 'empty'})
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print(result)
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async def upDate(h1):
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url = "http://www.qstheory.cn/qs/mulu.htm"
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# 进入首页
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try:
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async with AsyncClient(headers=headers) as client:
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response = await client.get(url)
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response.encoding = response.charset_encoding
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print('一级连接状态%d' % 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('.booktitle a'):
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book_link = item.get('href')
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if "http" not in book_link:
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book_link = "http://www.qstheory.cn" + book_link.replace("..", "").strip()
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year = item.text
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response2 = await client.get(book_link, headers=headers)
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response2.encoding = 'utf-8'
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print('二级连接状态%d' % 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('.highlight p a'):
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if '《求是》' in item1.text:
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banmianhao = item1.text.split("第")[-1].replace("期", "").strip()
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banmianming = '求是' + year
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yaowen_link = item1.get('href')
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response3 = await client.get(yaowen_link)
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response3.encoding = response3.charset_encoding
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print('三级连接状态%d' % 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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for item2 in soup2.select('.text p a'):
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link = item2.get('href')
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title = item2.text.strip()
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if h1[h1['title'].str.contains(title)].empty:
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response4 = await client.get(link, headers=headers)
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response4.encoding = response4.charset_encoding
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print('四级连接状态%d' % response4.status_code)
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if response4.status_code == 200:
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soup3 = BeautifulSoup(response4.text, "lxml")
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if soup3.select('h1'):
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author = parse_author(soup3)
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if soup3.select('.pubtime'):
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str_time = soup3.select('.pubtime')[0].text.strip()
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release_time = datetime.strptime(str_time, '%Y-%m-%d %H:%M:%S')
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else:
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str_time = soup3.select('.headtitle span')[0].text.strip()
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release_time = datetime.strptime(str_time,
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'%Y年%m月%d日 %H:%M:%S')
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content = parse_html_text(soup3)
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await collection.insert_one({'banmianhao': banmianhao,
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'banmianming': banmianming,
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'title': title,
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'subtitle': 'empty',
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'author': author,
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'keywordlist': 'empty',
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'detail_url': link,
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'release_time': release_time,
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'insert_timestamp': datetime.today(),
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'content': content})
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print("%s-%s-%s已完成" % (release_time, banmianhao, title))
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else:
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await collection.insert_one({'banmianhao': banmianhao,
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'banmianming': banmianming,
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'title': title,
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'subtitle': 'empty',
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'author': 'empty',
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'keywordlist': 'empty',
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'detail_url': link,
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'release_time': 'empty',
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'insert_timestamp': datetime.today(),
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'content': 'empty'})
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print("%s无内容" % (title))
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await asyncio.sleep(random.randint(5, 20))
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else:
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print('%s已经存在' % title)
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except Exception as result:
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# 改天数据为空
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await collection.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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'author': 'empty',
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'keywordlist': 'empty',
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'detail_url': url,
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'release_time': 'empty',
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'insert_timestamp': datetime.today(),
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'content': 'empty'})
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print(result)
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if __name__ == "__main__": # 当程序执行时
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# 调用函数
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asyncio.run(main())
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print("爬取完毕！")
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