bs4爬取企查查信息，时间问题一个页面创建一个txt文件，没有写保存数据库的方法

最新推荐文章于 2023-10-18 11:34:18 发布

原创最新推荐文章于 2023-10-18 11:34:18 发布 · 327 阅读

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#python bs4

该博客展示了使用Python和bs4库进行网页数据爬取的代码。定义了多个函数，包括创建新文本文件、处理下一页等。通过模拟不同的User - Agent，随机设置请求间隔时间，从指定网页抓取数据并保存为文本文件。

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import os
from bs4 import BeautifulSoup
from urllib import request
import urllib
import time
import codecs
import requests
import random

USER_AGENT = [
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:55.0) Gecko/20100101 Firefox/55.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:55.0) Gecko/20100101 Firefox/54.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:55.0) Gecko/20100101 Firefox/53.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:55.0) Gecko/20100101 Firefox/52.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:55.0) Gecko/20100101 Firefox/50.0",
    "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safari/537.36 Core/1.53.2306.400 QQBrowser/9.5.10648.400",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1",
    "Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6",
    "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.9 Safari/536.5",
    "Mozilla/5.0 (Windows NT 6.0) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.36 Safari/536.5",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_0) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.0 Safari/536.3",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24",
    "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24"]
def new_txt(soup):
    g=0
    alt=soup.find("div","navi-brand").find_next("img").attrs["alt"]
    print('alt',alt)
    newtxt = os.getcwd()+"\\"+alt+"\\"
    if not os.path.exists(newtxt):
        os.makedirs(newtxt)
    for file in soup.find_all('a', class_="ma_h1"):
        ur = file.get("href")
        print('ur',ur)
        QCCUR='https://www.qichacha.com' + ur
        print(str(ur) + '.txt')
        g += 1
        res = urllib.request.Request(QCCUR, headers={'User-Agent': USER_AGENT[random.randint(0, len(USER_AGENT) - 1)]})
        urlsleep = random.randint(10, 20)
        print('sleeptime', urlsleep)
        time.sleep(urlsleep)
        res = urllib.request.urlopen(res)
        soup = BeautifulSoup(res, "html.parser")
        print('soup', soup)
        wangzhi=soup.find_all("html")[0]
        print("wangzhi",wangzhi)
        urtx=str(ur).replace('/', ' ').lstrip('?')
        print(urtx)
        with codecs.open(newtxt + str(urtx)+ '.txt',"w",encoding="UTF-8")as f:
            f.write(str(wangzhi))

def xiayiye(url):
    res = urllib.request.Request(url, headers={'User-Agent': USER_AGENT[random.randint(0, len(USER_AGENT) - 1)]})
    res = urllib.request.urlopen(res)
    # res是网页的源代码，然后使用bs4的html进行解析
    soup = BeautifulSoup(res, "html.parser",from_encoding="utf8")
    cc=new_txt(soup)  # 爬取公司名
    print('cc',cc)
    for ne in soup.find_all('a', 'next'):
        next_page_url = ne.get("href")
        ne = 'https://www.qichacha.com' + next_page_url
        print('ne',ne)
        sleeptime = random.randint(10,25)
        print('sleeptime',sleeptime)
        time.sleep(sleeptime)
        xiayiye(ne)
if __name__ == '__main__':
    xiayiye("https://www.qichacha.com/g_CQ.html")