Python爬虫如何采集微博视频数据

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知识点

requests

pprint

开发环境

版 本：python 3.8

-编辑器：pycharm 2021.2

爬虫原理

作用：批量获取互联网数据(文本, 图片, 音频, 视频)

本质：一次次的请求与响应

案例实现

1. 导入所需模块

import requestsimport pprint

2. 找到目标网址

打开开发者工具，选中Fetch/XHR，选中数据所在的标签，找到目标所在url

https://www.weibo.com/tv/api/component?page=/tv/channel/4379160563414111/editor

3. 发送网络请求

headers = {    'cookie': '',    'referer': 'https://weibo.com/tv/channel/4379160563414111/editor',    'user-agent': '',}data = {    'data': '{"Component_Channel_Editor":{"cid":"4379160563414111","count":9}}'}url = 'https://www.weibo.com/tv/api/component?page=/tv/channel/4379160563414111/editor'json_data = requests.post(url=url, headers=headers, data=data).json()

4. 获取数据

json_data_2 = requests.post(url=url_1, headers=headers, data=data_1).json()

5. 筛选数据

dict_urls = json_data_2['data']['Component_Play_Playinfo']['urls']video_url = "https:" + dict_urls[list(dict_urls.keys())[0]]print(title + "\t" + video_url)

6. 保存数据

video_data = requests.get(video_url).contentwith open(f'video\\{title}.mp4', mode='wb') as f:    f.write(video_data)print(title, "爬取成功................")

完整代码

import requestsimport pprintheaders = {    'cookie': '添加自己的',    'referer': 'https://weibo.com/tv/channel/4379160563414111/editor',    'user-agent': '',}data = {    'data': '{"Component_Channel_Editor":{"cid":"4379160563414111","count":9}}'}url = 'https://www.weibo.com/tv/api/component?page=/tv/channel/4379160563414111/editor'json_data = requests.post(url=url, headers=headers, data=data).json()print(json_data)ccs_list = json_data['data']['Component_Channel_Editor']['list']next_cursor = json_data['data']['Component_Channel_Editor']['next_cursor']for ccs in ccs_list:    oid = ccs['oid']    title = ccs['title']    data_1 = {        'data': '{"Component_Play_Playinfo":{"oid":"' + oid + '"}}'    }    url_1 = 'https://weibo.com/tv/api/component?page=/tv/show/' + oid    json_data_2 = requests.post(url=url_1, headers=headers, data=data_1).json()    dict_urls = json_data_2['data']['Component_Play_Playinfo']['urls']    video_url = "https:" + dict_urls[list(dict_urls.keys())[0]]    print(title + "\t" + video_url)    video_data = requests.get(video_url).content    with open(f'video\\{title}.mp4', mode='wb') as f:        f.write(video_data)    print(title, "爬取成功................")

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