Python采集某手视频，1080P高清无水印，完整数据来源分析+完整代码

Posted 2022-02-06 松鼠爱吃饼干

知识点

• 动态数据抓包
• 动态页面分析
• requests携带参数发送请求
• json数据解析

开发环境

• python 3.8 更加新 稳定 运行代码
• pycharm 2021.2 辅助敲代码
• requests 第三方模块

一. 数据来源分析(思路分析)

1. 打开开发者工具刷新网页

• 右键点击检查 或者 F12 打开

• 选择network 然后刷新网页
  

• 随便点击打开一个视频
  

• 点击搜到的内容
  

• 依次展开查看, 去找到我们需要的视频地址

2. 确定url地址, 请求方式, 请求参数, 请求头参数

• 请求头参数
  

• 请求参数
  

3. 总结

• 请求方式: POST
• 请求头(伪装):

headers = 
'content-type': 'application/json',
'Cookie': '你自己的cookie',
'Host': 'www.kuaishou.com',
'Origin': 'https://www.kuaishou.com',
'Referer': 'https://www.kuaishou.com/profile/3xv78fxycm35nn4',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(Khtml, like Gecko) Chrome/95.0.4638.69 Safari/537.36'

• 请求参数:

data = 
'operationName': "visionProfilePhotoList",
'query': "query visionProfilePhotoList($pcursor: String, $userId: String, $page:
String, $webPageArea: String) \\n visionProfilePhotoList(pcursor: $pcursor, userId:
$userId, page: $page, webPageArea: $webPageArea) \\n result\\n llsid\\n
webPageArea\\n feeds \\n type\\n author \\n id\\n name\\n
following\\n headerUrl\\n headerUrls \\n cdn\\n url\\n
__typename\\n \\n __typename\\n \\n tags \\n type\\n
name\\n __typename\\n \\n photo \\n id\\n
duration\\n caption\\n likeCount\\n realLikeCount\\n
coverUrl\\n coverUrls \\n cdn\\n url\\n __typename\\n
\\n photoUrls \\n cdn\\n url\\n __typename\\n
\\n photoUrl\\n liked\\n timestamp\\n expTag\\n
animatedCoverUrl\\n stereoType\\n videoRatio\\n
profileUserTopPhoto\\n __typename\\n \\n canAddComment\\n
currentPcursor\\n llsid\\n status\\n __typename\\n \\n hostName\\n
pcursor\\n __typename\\n \\n\\n",
'variables': 'userId': "3x9dquvtb9n9fps", 'pcursor': "", 'page': "profile"

• 后续如果需要翻页爬取, 需要使用递归实现
  

二. 代码实现

1. 发送请求 访问网站

url = 'https://www.kuaishou.com/graphql'
# 伪装
headers = 
    # 控制data类型 json类型字符串
    'content-type': 'application/json',
    'Cookie': 'kpf=PC_WEB; kpn=KUAISHOU_VISION; clientid=3; did=web_ea128125517a46bd491ae9ccb255e242; client_key=65890b29; userId=270932146; kuaishou.server.web_st=ChZrdWFpc2hvdS5zZXJ2ZXIud2ViLnN0EqABnjkpJPZ-QanEQnI0XWMVZxXtIqPj-hwjsXBn9DHaTzispQcLjGR-5Xr-rY4VFaIC-egxv508oQoRYdgafhxSBpZYqLnApsaeuAaoLj2xMbRoytYGCrTLF6vVWJvzz3nzBVzNSyrXyhz-RTlRJP4xe1VjSp7XLNLRnVFVEtGPuBz0xkOnemy7-1-k6FEwoPIbOau9qgO5mukNg0qQ2NLz_xoSKS0sDuL1vMmNDXbwL4KX-qDmIiCWJ_fVUQoL5jjg3553H5iUdvpNxx97u6I6MkKEzwOaSigFMAE; kuaishou.server.web_ph=b282f9af819333f3d13e9c45765ed62560a1',
    'Host': 'www.kuaishou.com',
    'Origin': 'https://www.kuaishou.com',
    'Referer': 'https://www.kuaishou.com/profile/3xauthkq46ftgkg',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36',

# <Response [200]>: 发送请求成功结果
response = requests.post(url=url, headers=headers, json=data)

2. 获取数据

json_data = response.json()

3. 解析数据 去除不想要的内容

feeds = json_data['data']['visionProfilePhotoList']['feeds']
# 下一页需要的参数
pcursor = json_data['data']['visionProfilePhotoList']['pcursor']
# print(pcursor)
for feed in feeds:
    caption = feed['photo']['caption']    # 标题
    photoUrl = feed['photo']['photoUrl']   # 视频链接
    # \\: 转义字符, 直接写\\ 匹配不到 \\
    # \\\\ 才能匹配到 \\
    # 用css和xpath 是必须要你拿到的数据是一个网页源代码
    caption = re.sub('[\\\\/:*?"<>|\\n\\t]', '', caption)
    print(caption, photoUrl)

5. 获取数据 视频数据 拿到的是视频二进制数据

video_data = requests.get(url=photoUrl).content

6. 保存视频 通过二进制的方式保存

with open(f'video/caption.mp4', mode='wb') as f:
    f.write(video_data)
print(caption, '下载完成!')

翻页爬取

def get_page(pcursor):
    # 需要的数据得指定好
    # 递归, 自己调用自己 跳出递归
    data = 
        'operationName': "visionProfilePhotoList",
        'query': "query visionProfilePhotoList($pcursor: String, $userId: String, $page: String, $webPageArea: String) \\n  visionProfilePhotoList(pcursor: $pcursor, userId: $userId, page: $page, webPageArea: $webPageArea) \\n    result\\n    llsid\\n    webPageArea\\n    feeds \\n      type\\n      author \\n        id\\n        name\\n        following\\n        headerUrl\\n        headerUrls \\n          cdn\\n          url\\n          __typename\\n        \\n        __typename\\n      \\n      tags \\n        type\\n        name\\n        __typename\\n      \\n      photo \\n        id\\n        duration\\n        caption\\n        likeCount\\n        realLikeCount\\n        coverUrl\\n        coverUrls \\n          cdn\\n          url\\n          __typename\\n        \\n        photoUrls \\n          cdn\\n          url\\n          __typename\\n        \\n        photoUrl\\n        liked\\n        timestamp\\n        expTag\\n        animatedCoverUrl\\n        stereoType\\n        videoRatio\\n        profileUserTopPhoto\\n        __typename\\n      \\n      canAddComment\\n      currentPcursor\\n      llsid\\n      status\\n      __typename\\n    \\n    hostName\\n    pcursor\\n    __typename\\n  \\n\\n",
        'variables': 'userId': "3xauthkq46ftgkg", 'pcursor': pcursor, 'page': "profile"
    
    if pcursor == None:
        print('全部下载完成')
        return 0
    
    get_page(pcursor)

get_page('')

效果展示