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Python b站视频爬取

    直接上代码：

import requests
import json
from requests.exceptions import  RequestException
import concurrent.futures


class Spider():
    def __init__(self,bvid):
        self.headers = {
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',  # noqa
            'Accept-Charset': 'UTF-8,*;q=0.5',
            'Accept-Encoding': 'gzip,deflate,sdch',
            'Accept-Language': 'en-US,en;q=0.8',
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.74 Safari/537.36 Edg/79.0.309.43',
        }

        self.bvid=bvid


    def get_page(self):
        try:

            url = f'https://api.bilibili.com/x/player/pagelist?bvid={self.bvid}&jsonp=jsonp'

            r = requests.get(url,self.headers)

            if r.status_code ==200:
                return r.text
            else:
                print(r.status_code)

        except RequestException:
            print('请求失败')
            return None


    def parse_page(self,html):
        data = json.loads(html)
        results = data.get('data')
        url_list = []
        name_list = []
        for result in results:
            cid = result['cid']   #获取视频地址
            video_name = result['part'] #视频名称
            url = f'https://api.bilibili.com/x/player/playurl?cid={cid}&otype=json&bvid={self.bvid}'
            res = requests.get(url,self.headers )
            r =res.text
            re = json.loads(r).get('data')['durl'][0]

            url_list.append(re['url'])
            name_list.append(video_name)


        return url_list,name_list


    def download_video(self,url_list,name_list,i):


        data ={
            'referer': f'https://www.bilibili.com/video/{self.bvid}?p={i}',
            'Connection': 'keep-alive',
            'Origin': 'https://www.bilibili.com',
            'Accept': '*/*',
            'Accept-Encoding': 'gzip, deflate, sdch, br',
            'Accept-Language': 'zh-CN,zh;q=0.8'
             }

        self.headers.update(data)
        url = url_list[i-1]

        r = requests.get(url, headers=self.headers, stream=True)
        print(f'正在下载第{i}个视频,name:{name_list[i-1]}')
        with open(f'{name_list[i-1]}.mp4', "wb") as mp4:
            for chunk in r.iter_content(chunk_size=1024 * 1024):
                if chunk:
                    mp4.write(chunk)
            print(f'第{i}个视频下载完成,name:{name_list[i-1]}')


    def run(self):
        html = self.get_page()
        url_list = self.parse_page(html)
        # self.download_video(url_list)





bvid = 'BV1og4y1q7M4'

a = Spider(bvid)
html = a.get_page()
url_list,name_list = a.parse_page(html)

# We can use a with statement to ensure threads are cleaned up promptly,0 max_workers is ThreadNum
with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
    # Start the load operations and mark each future with its URL
    future_to_url = {executor.submit(a.download_video, url_list, name_list,i): i for i in range(1,len(url_list)+1)}
    for future in concurrent.futures.as_completed(future_to_url):
        url = future_to_url[future]
        try:
            data = future.result()
        except Exception as exc:
            print('%r generated an exception: %s' % (url, exc))
        else:
            print('success')

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