Python不仅能爬网页还能爬取APP呢！批量爬取抖音视频！最新代码

介绍

这次爬的是当下大火的APP--抖音，批量下载一个用户发布的所有视频。各位也应该知道，抖音只有移动端，官网打开除了给你个APP下载二维码啥也没有，所以相比爬PC网站，还是遇到了更多的问题，也花了更多的时间，不过好在基本实现了，除了一点咱在后面说。

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谷歌Chrome浏览器有一个模拟手机访问的功能，我们选在iPhone X模式来访问页面，果然看到发布的视频了：

我们接下来看下后台请求，不多，很快就找到我们需要的视频信息了，也能直接打开观看视频，到这感觉已经成功了一大半了：

两个地址除了max_cursor其他都一样，其实就是上一条返回的json数据中的max_cursor就是下个链接中的max_cursor，然后has_more等于1的时候表示还未全部加载，这样逻辑就清楚了，我们只要先判断has_more是否等于1，等于1的时候我们将max_cursor的值传入下一个链接继续访问获取视频地址，直到has_more等于0为止。

这样所有视频地址都有了，就开始下载吧！！

代码部分

from selenium import webdriver

from bs4 import BeautifulSoup

import json

import requests

import sys

import time

import os

import uuid

from contextlib import closing

from requests.packages.urllib3.exceptions import InsecureRequestWarning

requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

class douyin_spider(object):

"""docstring for douyin_spider"""

def __init__(self,user_id,_signature,dytk):

print '*******DouYin_spider******'

print 'Author : Awesome_Tang'

print 'Date : 2018-07-29'

print 'Version: Python2.7'

print '**************************'

print ''

self.userid = user_id

self.headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/65.0.3325.146 Safari/537.36'}

mobile_emulation = {'deviceName': 'iPhone X'}

# chrome浏览器模拟iPhone X进行页面访问

options = webdriver.ChromeOptions()

options.add_experimental_option("mobileEmulation",mobile_emulation)

self.browser = webdriver.Chrome(chrome_options=options)

self._signature= _signature

self.dytk= dytk

self.url = 'https://www.amemv.com/aweme/v1/aweme/post/?user_id=%s&count=32&max_cursor=0&aid=1128&_signature=%s&dytk=%s'%(self.userid,self._signature,self.dytk)

def handle_url(self):

url_list = [self.url,]

self.browser.get(self.url)

web_data = self.browser.page_source

soup = BeautifulSoup(web_data,'lxml')

web_data = soup.pre.string

web_data = json.loads(str(web_data))

if web_data['status_code'] == 0:

while web_data['has_more'] == 1:

# 最大加载32条视频信息，has_more等于1表示还未全部加载完

max_cursor = web_data['max_cursor']

# 获取时间戳

url = 'https://www.amemv.com/aweme/v1/aweme/post/?user_id=%s&count=32&max_cursor=%s&aid=1128&_signature=%s&dytk=%s'%(self.userid,max_cursor,self.dytk)

url_list.append(url)

self.browser.get(url)

web_data = self.browser.page_source

soup = BeautifulSoup(web_data,'lxml')

web_data = soup.pre.string

web_data = json.loads(str(web_data))

else:

max_cursor = web_data['max_cursor']

# 获取时间戳

url = 'https://www.amemv.com/aweme/v1/aweme/post/?user_id=%s&count=32&max_cursor=%s&aid=1128&_signature=%s&dytk=%s'%(self.userid,self.dytk)

url_list.append(url)

else:

url_list = []

return url_list

def get_download_url(self,url_list):

download_url = []

title_list = []

if len(url_list)> 0:

for url in url_list:

self.browser.get(url)

web_data = self.browser.page_source

soup = BeautifulSoup(web_data,'lxml')

web_data = soup.pre.string

web_data = json.loads(str(web_data))

if web_data['status_code'] == 0:

for i in range(len(web_data['aweme_list'])):

download_url.append(web_data['aweme_list'][i]['video']['play_addr']['url_list'][0])

title_list.append(web_data['aweme_list'][i]['share_info']['share_desc'].encode('utf-8'))

return download_url,title_list

def videodownloader(self,url,title):

size = 0

path = title+'.mp4'

with closing(requests.get(url,headers = self.headers,stream=True,verify=False)) as response:

chunk_size = 1024

content_size = int(response.headers['content-length'])

if response.status_code == 200:

print '%s is downloading...'%title

sys.stdout.write('[File Size]: %0.2f MB ' % (content_size/chunk_size/1024))

with open(path,'wb') as f:

for data in response.iter_content(chunk_size=chunk_size):

f.write(data)

size += len(data)

f.flush()

sys.stdout.write('[Progress]: %0.2f%%' % float(size/content_size*100) + ' ')

sys.stdout.flush()

else:

print response.status_code

def run(self):

url = 'https://www.amemv.com/aweme/v1/aweme/post/?user_id=%s&count=32&max_cursor=0&aid=1128&_signature=%s&dytk=%s'%(self.userid,self.dytk)

url_list = self.handle_url()

download_url,title_list = self.get_download_url(url_list)

for i in range(len(download_url)):

url = download_url[i]

title = title_list[i]

self.videodownloader(url,title)

if __name__ == '__main__':

# 创建对象

# 传入三个参数，user_id,dytk

douyin_spider = douyin_spider('95870186531','RFE1JhAbHxD7J8TA9HCumURRNT','539f2c59bb57577983b3818b7a7f32ef')

douyin_spider.run()

print '******DouYin_spider@Awesome_Tang、******'

（编辑：李大同）

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