python爬虫微信公众号视频

一、首先需要自己申请一个公众号
1.登陆自己的账号。
2.进入公众号后台首页，新建群发–> 自建图文

3. 点击超链接

4.选择其他的公众号

5.搜索想要爬虫的公众号

6.通过抓包获取信息，定位请求的url，
请求的参数token和cookies需要你自己申请公众号的账号来获取，下面是获取token和cookies的代码：

#遵循PEP8规则
import time
import json
import re

from selenium import webdriver
from lxml import html



# 获取cookies和token
class C_ookie:
    # 初始化
    def __init__(self):
        self.html = ''

    # 获取cookie
    def get_cookie(self):
        cooki  = {}
        url = 'https://mp.weixin.qq.com'
        Browner = webdriver.Chrome()
        Browner.get(url)
        time.sleep(10)
        # 获取账号输入框
        ID = Browner.find_element_by_name('account')
        # 获取密码输入框
        PW = Browner.find_element_by_name('password')
        # 输入账号
        id = '你自己申请的公众号的账号'
        pw = '你自己申请的公众号的密码'
        # id = input('请输入账号:')
        # pw = input('请输入密码:')
        ID.send_keys(id)
        PW.send_keys(pw)
        # 获取登录button，点击登录
        Browner.find_element_by_class_name('btn_login').click()
        # 等待扫二维码
        time.sleep(10)
        cks = Browner.get_cookies()
        for ck in cks:
            cooki[ck['name']] = ck['value']
        ck1 = json.dumps(cooki)
        print(ck1)
        with open('ck.txt','w') as f :
            f.write(ck1)
            f.close()
        self.html = Browner.page_source

	# 获取token，在页面中提取
    def Token(self):
      #等待页面加载
        time.sleep(5)
        etree = html.etree
        h = etree.HTML(self.html)
        url = h.xpath('//a[@title="首页"]/@href')[0]
        print(url)
        token = re.findall('d+',url)
        tokentxt = json.dumps(token)
        print(tokentxt)
        with open('token.txt', 'w') as f:
            f.write(tokentxt)
            f.close()


C = C_ookie()
C.get_cookie()
C.Token()

7.通过抓包把文章里的视频播放链接找到，把标题和下载链接存到csv文件里

import time
import json
import random
import csv

from selenium import webdriver
from lxml import html
import requests
import re
from http import cookiejar


# 获取文章
class getEssay:

    def __init__(self):
         # 获取cookies
        with open('ck.txt','r') as f :
            cookie = f.read()
            f.close()
        self.cookie = json.loads(cookie)

        # 获取token
        self.header = {
            "HOST": "mp.weixin.qq.com",
            "User-Agent": 'Mozilla / 5.0(WindowsNT6.1;WOW64) AppleWebKit / 537.36(KHTML, likeGecko) Chrome / 74.0.3729.131Safari / 537.36'
        }
        m_url = 'https://mp.weixin.qq.com'
        response = requests.get(url=m_url, cookies=self.cookie)
        print(response);
        self.token = 000000; ## 填入token.txt保存的token信息。
        print(self.token)
        # fakeid与name
        self.fakeid = []


    # 获取公众号信息
    def getGname(self):
        # 请求头
        headers = {
        'Accept': 'application/json, text/javascript, */*; q=0.01',
        'Accept-Encoding': 'gzip, deflate, br',
        'Accept-Language': 'zh-CN,zh;q=0.9',
        'Connection': 'keep-alive',
        'Host': 'mp.weixin.qq.com',
        'Referer': 'https://mp.weixin.qq.com/cgi-bin/appmsg?t=media/appmsg_edit_v2&action=edit&isNew=1&type=10&token=%d&lang=zh_CN'%int(self.token),
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36',
        'X-Requested-With': 'XMLHttpRequest'
         }
        # 地址
        url = 'https://mp.weixin.qq.com/cgi-bin/searchbiz?'
        # query = input('请输入要搜索的公众号关键字:')
        # begin = int(input('请输入开始的页数:'))
        query = '印前制作'
        begin = 0
        begin *= 5
        # 请求参数
        data = {
            'action': 'search_biz',
            'token': self.token,
            'lang': 'zh_CN',
            'f': 'json',
            'ajax':' 1',
            'random': random.random(),
            'query': query,
            'begin': begin,
            'count': '1'
        }
        # 请求页面，获取数据
        res = requests.get(url=url, cookies=self.cookie, headers=headers, params=data)
        print(res.text);
        name_js = res.text
        name_js = json.loads(name_js)
        list = name_js['list']
        for i in list:
            time.sleep(1)
            fakeid = i['fakeid']
            nickname =i['nickname']
            print(nickname,fakeid)
            self.fakeid.append((nickname,fakeid))

    # 获取文章url
    def getEurl(self, begin):

        url = 'https://mp.weixin.qq.com/cgi-bin/appmsg?'
        headers = {
        'Accept': 'application/json, text/javascript, */*; q=0.01',
        'Accept-Encoding': 'gzip, deflate, br',
        'Accept-Language': 'zh-CN,zh;q=0.9',
        'Connection': 'keep-alive',
        'Host': 'mp.weixin.qq.com',
        'Referer': 'https://mp.weixin.qq.com/cgi-bin/appmsg?t=media/appmsg_edit_v2&action=edit&isNew=1&type=10&token=%d&lang=zh_CN'%int(self.token),
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36',
        'X-Requested-With': 'XMLHttpRequest'
         }

        # 遍历fakeid，访问获取文章链接
        for i in self.fakeid:
            time.sleep(1)
            fake = i[1]
            data = {
                'token': self.token,
                'lang': 'zh_CN',
                'f': 'json',
                'ajax': '1',
                'random': random.random(),
                'action': 'list_ex',
                'begin': begin,
                'count': 5,
                'fakeid': fake,
                'type': 9
                 }
            res = requests.get(url, cookies=self.cookie, headers=headers, params=data)
            js = res.text
            print(js)
            link_l = json.loads(js)
            self.parJson(link_l)

    # 解析提取url
    def parJson(self,link_l):
        l = link_l['app_msg_list']
        for i in l:
            link = i['link']
            link = self.getVideo(link)
            name = i['title']
            self.saveData(name,link)

    # 保存数据进csv中
    def saveData(self,name,link):
        with open('link.csv' ,'a',encoding='utf8') as f:
            w = csv.writer(f)
            w.writerow((name,link))
            print('ok')

    def getVideo(self, url):
      # 请求要下载的url地址
      html = requests.get(url);
      # content返回的是bytes型也就是二进制的数据。
      # 我用的是正则，也可以使用xpath
      jsonRes = html.text  #  匹配:wxv_1105179750743556096
      dirRe = r"wxv_.{19}"
      result = re.search(dirRe, jsonRes)
      if result:
        wxv = result.group(0)
        
        print(wxv)
        print(html)

        # 页面播放形式
        video_url = "https://mp.weixin.qq.com/mp/readtemplate?t=pages/video_player_tmpl&auto=0&vid=" + wxv
        print("video_url", video_url)


        # 页面可下载形式
        video_url_temp = "https://mp.weixin.qq.com/mp/videoplayer?action=get_mp_video_play_url&preview=0&__biz=MzU1MTg5NTQxNA==&mid=2247485507&idx=4&vid=" + wxv
        response = requests.get(video_url_temp)
        content = response.content.decode()
        content = json.loads(content)
        print(content)
        url_info = content.get("url_info")
        if url_info:
            video_url2 = url_info[0].get("url")
            print(video_url2)
            return video_url2
        else:
            return ""
        
      else:
        return ""
      

if __name__ == '__main__':
    G = getEssay()
    G.getGname()
    for num in range(0,20):
        time.sleep(1)
        G.getEurl(num*5)

8.批量从csv文件的链接下载视频

import sys
import you_get
import os
import csv
import requests

def download(url,filename):
  video_path = filename + ".mp4"
  html = requests.get(url)
     # content返回的是bytes型也就是二进制的数据。
  html = html.content
  with open(video_path, 'wb') as f:
        f.write(html)
 
		

if __name__ == '__main__':
    # 视频网站的地址
    sFileName='link2.csv'
    json = {}
    with open(sFileName,newline='',encoding='UTF-8') as csvfile:
      rows=csv.reader(csvfile)
      for row in rows:
        print(row[0]+'====='+row[1])
        download(row[1],row[0])

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