Python爬虫实战：使用requests库下载视频

import requests
import os
import json
from moviepy.editor import VideoFileClip, AudioFileClip
from bs4 import BeautifulSoup

# 数据抓取
base_url = 'http://www.zkk78.com/index.php/user/ajax_ulog/?ac=set&mid=1&id=4721&sid=1&nid=1&type=4'
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36 Edg/99.0.1150.55',
    'Referer': 'http://www.zkk78.com/dongmanplay/1660-1-1.html',
    'Cookie': 'first_h_kp=1689927842258; count_h_kp=1; first_m_kp=1689927842260; count_m_kp=1; __51cke__=; Hm_lvt_38ea8ed97fbe7c334fcc1878c579e5e0=1689927815; Hm_lvt_c11e70df18184f7263176ce90c8a9cc3=1689927817; PHPSESSID=2pnhv3rla9asc5i0l248i8dl83; user_id=20620; user_name=2143552649; group_id=2; group_name=%E9%BB%98%E8%AE%A4%E4%BC%9A%E5%91%98; user_check=b93515cf840072f8df045b0842e31513; user_portrait=%2Fstatic%2Fimages%2Ftouxiang.png; XLA_CI=43a5b7a031caf14cbacec3c121269bcf; first_h_kp=1689930340869; count_h_kp=1; first_m_kp=1689930340870; count_m_kp=1; history=%5B%7B%22name%22%3A%22%E4%BD%A0%E7%9A%84%E5%90%8D%E5%AD%97%22%2C%22pic%22%3A%22https%3A%2F%2Fcdn.yinghuazy.xyz%2Fupload%2Fvod%2F20210219-1%2F5e3b65ef9e6c582f09784d027cfb1923.jpg%22%2C%22link%22%3A%22%2Fdongmanplay%2F1660-1-1.html%22%2C%22part%22%3A%22%E5%85%A8%E9%9B%86%E6%97%A5%E8%AF%AD%22%7D%2C%7B%22name%22%3A%22%E5%9B%9E%E5%A4%8D%E6%9C%AF%E5%A3%AB%E7%9A%84%E9%87%8D%E6%9D%A5%E4%BA%BA%E7%94%9F%22%2C%22pic%22%3A%22https%3A%2F%2Fpic.rmb.bdstatic.com%2Fbjh%2F377f268028bb09e80035191cd9f15c58.jpeg%22%2C%22link%22%3A%22%2Fdongmanplay%2F4721-1-1.html%22%2C%22part%22%3A%22%E7%AC%AC01%E9%9B%86%22%7D%5D; Hm_lpvt_c11e70df18184f7263176ce90c8a9cc3=1689930351; Hm_lpvt_38ea8ed97fbe7c334fcc1878c579e5e0=1689930351; __tins__21589017=%7B%22sid%22%3A%201689930340967%2C%20%22vd%22%3A%206%2C%20%22expires%22%3A%201689932161945%7D; __51laig__=15',
}

response = requests.get(base_url, headers=headers)  # 第一次请求
print(response.status_code)
data = response.text
print(data)

# 数据解析，json.loads转换为python格式
json_data = json.loads(data)
print(json_data)

# 错误分析：之前代码出错是因为直接将 json_data['info'] 赋值给 json_list，而 json_data['info'] 本身是一个字典，
# 遍历字典需要使用  json_data['info'].items()，而不是直接遍历 json_data['info']。
# 这里我们假设目标数据存储在 json_data['info'] 的某个键值对中，例如 'videos'，
# 那么需要先获取 'videos' 对应的值，再进行遍历。

video_list = json_data['info'].get('videos', [])
# 如果 'videos' 键不存在，则 video_list 为空列表，避免报错

for item in video_list:
    video_title = item.get('title', '') + '.mp4'
    video_url = item.get('play_url', '')
    print(video_title, video_url)

    print('正在下载:', video_title)
    # 第二次请求
    video_data = requests.get(video_url, headers=headers).content
    with open(r'./视频/' + video_title, 'wb') as f:
        f.write(video_data)
        print('下载完成\n')