Python爬蟲實戰(zhàn)之網(wǎng)易云音樂加密解析附源碼

更新時間：2021年10月15日 08:51:36 作者：松鼠愛吃餅干

讀萬卷書不如行萬里路，學(xué)的扎不扎實要通過實戰(zhàn)才能看出來，本篇文章手把手帶你解析網(wǎng)易云音樂數(shù)據(jù),大家可以在實戰(zhàn)過程中更有效的掌握python

環(huán)境

python3.8
pycharm2021.2

知識點

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

第一步

打開這個網(wǎng)站在里面去分析我們需要的數(shù)據(jù) 每個音樂的名稱 id

去網(wǎng)頁源代碼查找數(shù)據(jù)，發(fā)現(xiàn)并沒有，這個網(wǎng)頁并不是一個靜態(tài)頁面

打開開發(fā)者工具，找到歌曲的id

找到真正的目標網(wǎng)址https://music.163.com/discover/toplist

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第二步

通過代碼去實現(xiàn)當(dāng)前這一個步驟

通過代碼去訪問當(dāng)這個頁面 – 拿到網(wǎng)頁源代碼
提取我們真正想要的音樂的名稱 id
下載音樂: id獲取是為了下載音樂分析里面音樂數(shù)據(jù)的加密規(guī)則去下載歌曲

開始代碼

先導(dǎo)入所需模塊

import requests
import re
import execjs

請求數(shù)據(jù)

# 通過代碼去訪問當(dāng)這個頁面 -- 拿到網(wǎng)頁源代碼
url = 'https://music.163.com/discover/toplist'
# 偽裝
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: 分析出來的真正數(shù)據(jù)鏈接
# headers: 偽裝請求頭
response = requests.get(url, headers).text
# <Response [200]>: 告訴你訪問成功了

提取我們真正想要的音樂的名稱 id

zip_data = re.findall('<li><a href="/song\?id=(.*?)" rel="external nofollow"  rel="external nofollow" >(.*?)</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']
    }
    # 發(fā)送請求
    # 當(dāng)前的音樂數(shù)據(jù)
    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)

導(dǎo)入js文件

# js文件導(dǎo)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)

完整代碼

import requests
import re
import execjs

url = 'https://music.163.com/discover/toplist'
# 偽裝
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=(.*?)" rel="external nofollow"  rel="external nofollow" >(.*?)</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)

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