【Python爬虫】JS加密解析，采集网易云音乐数据（附源码）

拼搏现实的明天。 2022-09-15 15:51 159阅读 0赞

# 环境 #

*  python3.8
 *  pycharm2021.2

# 知识点 #

*  requests >>> pip install requests
 *  execjs >>> pip install PyExecJS

# 第一步 #

打开这个网站 在里面去分析我们需要的数据 每个音乐的名称 id

去网页源代码查找数据，发现并没有，这个网页 并不是一个静态页面  
![4148de518cfc082a4adbfd102c7ac0b0.png][]

打开开发者工具，找到歌曲的id  
![358592226fb80536a70a0b7e727ea3db.png][]

找到真正的目标网址 https://music.163.com/discover/toplist

![b57f67f169a151726c4e3a3c3ed252e8.png][]

【付费VIP完整版】只要看了就能学会的教程，80集Python基础入门视频教学

# [点这里即可免费在线观看][Link 1] #

# 第二步 #

通过代码去实现当前这一个步骤

1.  通过代码去访问当这个页面 – 拿到网页源代码
2.  提取我们真正想要的 音乐的名称 id
3.  下载音乐: id获取是为了下载音乐  
    分析里面音乐数据的 加密规则 去下载歌曲

# 开始代码 #

### 先导入所需模块 ###

import requests
    import re
    import execjs

### 请求数据 ###

# 通过代码去访问当这个页面 -- 拿到网页源代码
    url = 'https://music.163.com/discover/toplist'
    # 伪装
    headers = { 
        'cookie': '_ntes_nuid=063717de540d3ec18d9b4a0bdf51e931; WM_TID=sxztjH%2FJbYZBEREFBQZvAgttUnJPrvYf; ntes_kaola_ad=1; NMTID=00OSBNvfChgV2TD7k5IhSzky6R8lXgAAAF0zoWmoA; _ntes_nnid=063717de540d3ec18d9b4a0bdf51e931,1607344992641; _iuqxldmzr_=32; OUTFOX_SEARCH_USER_ID_NCOO=2145381542.3273497; WEVNSM=1.0.0; WNMCID=sazafu.1624080681192.01.0; UM_distinctid=17b784cb58a17-097be09ee87fb9-c343365-1aeaa0-17b784cb58b8bc; __root_domain_v=.163.com; _qddaz=QD.159230735652240; vinfo_n_f_l_n3=11aae7905aa2179b.1.11.1575470964063.1625470009945.1632894007779; usertrack=ezq0J2FlcQWNYypxAx88Ag==; JSESSIONID-WYYY=Yvm62%5Cnd8XNkT2ryCNOJx9urqXsxCDMF6srNnGRegtmuNdB5MrrS9ou%2FWw3JbVf960uHnGW3Bb%2Fbhv2xZm3Vn%2B%2BonZSX38sqKiUMuRd6TDKD39HRzGmrZ%5Cp9IUaNs%5C5nYt9xltJBt5qRgWsl0PZsxDhSu26ugGAozPffXXAjemm0o%2Fv%5C%3A1634111694844; WM_NI=au9XpuutN3GwymEoZsAgWl6%2BH4cTcHgYKos%2BWibR3hSntTQhrpX%2FLoCAycOKLnZteLb1LlluoIk9jlKxaaUThS4tfZr9jWB3LVjXKQUH4%2BMpukbEPcnHaN80J8%2FhoqeeYms%3D; WM_NIKE=9ca17ae2e6ffcda170e2e6ee8de74b85b18eb3b27bae8e8ab2d44e969f9aafae3388af8f98d06da59b968ecf2af0fea7c3b92aa3abf7b9f37fb7ac82d4c67dbbb38b90d97983b9998db5218cecadb5e244a5878590f22195b7aeb3b26491b2bcb5d464b2b098d0cf65819fb784ce4190b29695e848a2ef848def7fad97a5dae96889a8af82d860ac8dfc95e552b2e7a6b8c139908aa6b9ca5b9798fcccd07cb7b5aea6d369ae98afafbb3c8ae8e189ee7ba7bb978ef237e2a3; playerid=29374327',
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36'
    }
    # url: 分析出来的真正数据链接
    # headers: 伪装请求头
    response = requests.get(url, headers).text
    # <Response [200]>: 告诉你访问成功了

### 提取我们真正想要的 音乐的名称 id ###

zip_data = re.findall('<li><a href="/song\?id=(.*?)">(.*?)</a></li>', response)
    for music_id, title in zip_data:
        # url_1 = 'http://music.163.com/song/media/outer/url?id=' + music_id
        url_1 = 'https://music.163.com/weapi/song/enhance/player/url/v1?csrf_token='
        result = ctx.call('start', music_id)
        data = { 
            'params': result['encText'],
            'encSecKey': result['encSecKey']
        }
        # 发送请求
        # 当前的音乐数据
        music_url = requests.post(url_1, data=data, headers=headers).json()['data'][0]['url']
        music_data = requests.get(music_url, headers).content
        title = re.sub(r'[/\\:*?"<>|]', '_', title)

### 导入js文件 ###

# js文件导入
    js = open('music163.js', mode='r', encoding='utf-8').read()
    ctx = execjs.compile(js)

### 保存文件 ###

with open('music/' + title + '.mp3', mode='wb') as f:
        f.write(music_data)
    print(title)

![a8b6f3ca38d5079cd14e381b37465612.png][]

# 完整代码 #

import requests
    import re
    import execjs
    
    url = 'https://music.163.com/discover/toplist'
    # 伪装
    headers = { 
        'cookie': '_ntes_nuid=063717de540d3ec18d9b4a0bdf51e931; WM_TID=sxztjH%2FJbYZBEREFBQZvAgttUnJPrvYf; ntes_kaola_ad=1; NMTID=00OSBNvfChgV2TD7k5IhSzky6R8lXgAAAF0zoWmoA; _ntes_nnid=063717de540d3ec18d9b4a0bdf51e931,1607344992641; _iuqxldmzr_=32; OUTFOX_SEARCH_USER_ID_NCOO=2145381542.3273497; WEVNSM=1.0.0; WNMCID=sazafu.1624080681192.01.0; UM_distinctid=17b784cb58a17-097be09ee87fb9-c343365-1aeaa0-17b784cb58b8bc; __root_domain_v=.163.com; _qddaz=QD.159230735652240; vinfo_n_f_l_n3=11aae7905aa2179b.1.11.1575470964063.1625470009945.1632894007779; usertrack=ezq0J2FlcQWNYypxAx88Ag==; JSESSIONID-WYYY=Yvm62%5Cnd8XNkT2ryCNOJx9urqXsxCDMF6srNnGRegtmuNdB5MrrS9ou%2FWw3JbVf960uHnGW3Bb%2Fbhv2xZm3Vn%2B%2BonZSX38sqKiUMuRd6TDKD39HRzGmrZ%5Cp9IUaNs%5C5nYt9xltJBt5qRgWsl0PZsxDhSu26ugGAozPffXXAjemm0o%2Fv%5C%3A1634111694844; WM_NI=au9XpuutN3GwymEoZsAgWl6%2BH4cTcHgYKos%2BWibR3hSntTQhrpX%2FLoCAycOKLnZteLb1LlluoIk9jlKxaaUThS4tfZr9jWB3LVjXKQUH4%2BMpukbEPcnHaN80J8%2FhoqeeYms%3D; WM_NIKE=9ca17ae2e6ffcda170e2e6ee8de74b85b18eb3b27bae8e8ab2d44e969f9aafae3388af8f98d06da59b968ecf2af0fea7c3b92aa3abf7b9f37fb7ac82d4c67dbbb38b90d97983b9998db5218cecadb5e244a5878590f22195b7aeb3b26491b2bcb5d464b2b098d0cf65819fb784ce4190b29695e848a2ef848def7fad97a5dae96889a8af82d860ac8dfc95e552b2e7a6b8c139908aa6b9ca5b9798fcccd07cb7b5aea6d369ae98afafbb3c8ae8e189ee7ba7bb978ef237e2a3; playerid=29374327',
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36'
    }
    
    response = requests.get(url, headers).text
    zip_data = re.findall('<li><a href="/song\?id=(.*?)">(.*?)</a></li>', response)
    js = open('music163.js', mode='r', encoding='utf-8').read()
    ctx = execjs.compile(js)
    for music_id, title in zip_data:
        url_1 = 'https://music.163.com/weapi/song/enhance/player/url/v1?csrf_token='
        result = ctx.call('start', music_id)
        data = { 
            'params': result['encText'],
            'encSecKey': result['encSecKey']
        }
        music_url = requests.post(url_1, data=data, headers=headers).json()['data'][0]['url']
        music_data = requests.get(music_url, headers).content
        title = re.sub(r'[/\\:*?"<>|]', '_', title)
        with open('music/' + title + '.mp3', mode='wb') as f:
            f.write(music_data)
        print(title)

[4148de518cfc082a4adbfd102c7ac0b0.png]: /images/20220828/d20892faac51444888fc52fae8ba0eda.png
[358592226fb80536a70a0b7e727ea3db.png]: /images/20220828/c3a7e4fab1504ca1893445840087359c.png
[b57f67f169a151726c4e3a3c3ed252e8.png]: /images/20220828/8b88630a04b64aad830304e45109ca5c.png
[Link 1]: https://www.bilibili.com/video/BV1544y1C7g4?share_source=copy_web
[a8b6f3ca38d5079cd14e381b37465612.png]: /images/20220828/14e0a7898e714afa87eb724a51e78304.png