[python]用python爬取微信公众号中的文章标题和信息

Python爬虫，微信公众号文章采集工具

来源：https://zhuanlan.zhihu.com/p/111352875

#微信公众号文章采集

import requests
from lxml import etree
import re
import os

def get_con(url):
    #url="https://mp.weixin.qq.com/s?src=11&timestamp=1562661256&ver=1717&signature=d7T*ZXIp0YZObCDhUTUEkZ-R4ph9iFZF5jpMEczyoxdd-OdhP7EU0TdN9isXUaBkqOVurRBdMzMOW4b-6FC44PbuZ9kC31VBEVk0li-KJ47rct*frYgFh4uYBcdxJ8Xc&new=1"
    html=requests.get(url).text
    #print(html)
    con=etree.HTML(html)
    #print(con)
    #获取标题
    h2=con.xpath('//h2[@class="rich_media_title"]/text()')
    h2=h2[0]
    h2=re.sub(r'[\t\n\|\/\<\>\:\*\?\\\" ]','',h2) #去除多余的字符
    h2 = re.sub('......', '', h2)  # 去除多余的字符
    print(h2)

    os.makedirs(f'./weixin/{h2}/',exist_ok=True)

    #获取作者
    span1=con.xpath('//span[@class="rich_media_meta rich_media_meta_text"]/text()')
    try:
        span1=span1[0]
        span1 = re.sub(r'[\t\n ]', '', span1)  # 去除多余的字符
    except:
        span1=''
    print(span1)
    span2=con.xpath('//span[@class="rich_media_meta rich_media_meta_nickname"]/a/text()')
    span2=span2[0]
    span2=re.sub(r'[\t\n ]','',span2) #去除多余的字符
    print(span2)
    if span1=='':
        author=span2
    else:
        author='%s%s%s'%(span2,"-",span1)
    print(author)
    #获取源码
    p_con=''
    div=con.xpath('//section/p')
    print(len(div))
    for p in div:
        p = etree.tostring(p, encoding='utf-8')
        p = bytes.decode(p)
        p_con = p_con + p
    print(p_con)
    #获取正文
    p_text=''
    span=con.xpath('//section/p')
    print(span)
    for p_tex in span:
        p_tex=p_tex.xpath('string(.)')
        p_text=p_text+p_tex+'\n'
        #print(p_tex)
    print(p_text)

    #保存内容
    con_text='%s%s%s%s%s%s%s'%(h2,'\n',author,'\n',p_text,'\n',p_con)
    with open(f'./weixin/{h2}/{h2}.txt', 'w',encoding='utf-8') as f:
        f.write(con_text)
    print(f'保存 {h2} 内容成功！')

    #获取图片
    p_imgs=con.xpath('//section/p/img')
    i=0
    for p_img in p_imgs:
        #print(p_img.attrib)
        img_url=p_img.attrib['data-src']
        print(img_url)
        if "jpg" in img_url:
            img_name=f'{i}.jpg'
        if "png" in img_url:
            img_name = f'{i}.png'
        if "gif" in img_url:
            img_name = f'{i}.gif'
        print(img_name)
        r=requests.get(img_url)
        with open(f'./weixin/{h2}/{img_name}', 'wb') as f:
            f.write(r.content)
        print(f'保存 {img_name} 图片成功！')
        i=i+1
    print(f'保存 {h2} 所有图片成功！')

if __name__ == '__main__':
    url=input("请输入要采集的微信公众号文章地址:")
    #url="https://mp.weixin.qq.com/s?src=11&timestamp=1562668731&ver=1718&signature=lgnEjVavqA8dhhC8ytzdW2gdk0CWoC7DTLo1ym1Rmp9bSJYwAJEu0ZlxsjhK3qUOG6FtgrWET39PvPP*wkKpyST7ZDG5KADkE7LKJuWo86bo30hYsRr3fkcj8XeVGsHh&new=1"
    get_con(url)

备注：

在

h2=re.sub(r'[\t\n\/\<\>\:\*\?\\\” ]’,”,h2) #去除多余的字符

中，有时标题中存在|?等符号，可能会存在问题，可以参考对该处进行调整。