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netease_music.py
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netease_music.py
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# 实现网易云音乐下载，三个功能
# 1.给歌单链接,下载歌单内所有歌曲
# 2.给专辑链接,下载专辑内所有歌曲
# 3.给单个歌曲链接,下载歌曲
import os
import re
import base64
import requests
import json
from lxml import etree
from Crypto.Cipher import AES # 安装使用pip install pycrypto
class MusicDownload(object):
def __init__(self):
self.headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"
}
# self.playlist_url_temp = 'http://music.163.com/playlist?id={}' # 歌单页面真实url,填充歌单的id,从用户传来的链接中提取
# self.album_url_temp = 'http://music.163.com/album?id={}' # 专辑真实url,填充专辑id
# self.song_url_temp = 'http://music.163.com/song?id={}' # 单曲真实url
self.second_param = "010001" # 不可变
# 不可变
self.third_param = "00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7"
self.forth_param = "0CoJUm6Qyw8W8jud" # 不可变
self.song_url = 'http://music.163.com/weapi/song/enhance/player/url?csrf_token='
def get_option(self):
print('下载:歌单内容,输入1; 专辑内容,输入2; 单曲内容,输入3; 退出按q')
api = input('请输入要下载的内容编号:')
return api
def get_id(self, url):
"""获取不同请求的id,限于歌单,专辑,单曲id"""
# 先对格式进行验证
p = re.compile(r'http://music.163.com/#/(.*)\?id=(\d+)')
ret = p.findall(url)
cate, id_num = (ret[0][0], ret[0][1]) if ret else (None, None)
# print(cate, id_num)
return cate, id_num
def get_real_url(self, api):
while True:
if api == '1':
cate = 'playlist'
print('歌单链接格式为:http://music.163.com/#/playlist?id=数字')
elif api == '2':
cate = 'album'
print('专辑链接格式为:http://music.163.com/#/album?id=数字')
elif api == '3':
cate = 'song'
print('单曲链接格式为:http://music.163.com/#/song?id=数字')
print('返回上一层请按0')
url = input('请输入链接:')
if url == '0':
return None
# 校验链接是否正确
r_cate, id_num = self.get_id(url)
if id_num and r_cate == cate:
url = re.sub(r'#/', '', url)
return url
else:
print('请输入正确的链接')
continue
def enter(self):
while True:
api = self.get_option()
file_name = input('请输入要保存的文件名:')
if api == 'q':
break
elif api not in ["1", "2", "3"]:
print('Warning:请输入正确编号')
continue
else:
real_url = self.get_real_url(api)
if real_url is None:
continue
else:
return real_url, api, file_name
def parse_url(self, real_url):
"""对url进行请求,获取响应返回"""
resp = requests.get(real_url, headers=self.headers)
return resp.content
def get_song_id_name(self, resp):
# 适用于歌单和专辑链接
resp = resp.decode()
html_ele = etree.HTML(resp)
a_list = html_ele.xpath('//div[@id="song-list-pre-cache"]//a')
if a_list:
# 找到了a标签
content_list = []
for a in a_list:
item = {}
song_name = a.xpath('./text()')[0] if a.xpath('./text()') else None
song_id = a.xpath('./@href')[0] if a.xpath('./@href') else None
if song_id:
# 提取出来纯数字
ret = re.match(r'/song\?id=(\d+)', song_id)
song_id = ret.group(1) if ret else None
item[song_name] = song_id
content_list.append(item)
return content_list
return None # 说明响应中没有数据
def get_params(self, song_id):
"""根据原js代码改为python加密"""
iv = "0102030405060708" # 不可变
first_key = self.forth_param
second_key = 16 * 'F' # 随机数,自定义即可
first_param = "{\"ids\":\"[" + song_id + "]\",\"br\":128000,\"csrf_token\":\"\"}" # 可变,从浏览器watch中截获
h_encText = self.AES_encrypt(first_param, first_key, iv)
h_encText = self.AES_encrypt(h_encText.decode('utf-8'), second_key, iv)
return h_encText.decode('utf-8')
def get_encSecKey(self):
"""生成这个参数所要的参数都是固定值,因此在浏览器console中,将生成这个参数的函数
贴到控制台中,然后将固定的参数传进去即可
固定参数i:FFFFFFFFFFFFFFFF,
e:010001
f:00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7
"""
encSecKey = "257348aecb5e556c066de214e531faadd1c55d814f9be95fd06d6bff9f4c7a41f831f6394d5a3fd2e3881736d94a02ca919d952872e7d0a50ebfa1769a7a62d512f5f1ca21aec60bc3819a9c3ffca5eca9a0dba6d6f7249b06f5965ecfff3695b54e1c28f3f624750ed39e7de08fc8493242e26dbc4484a01c76f739e135637c"
return encSecKey
def AES_encrypt(self, text, key, iv):
pad = 16 - len(text) % 16
text = text + pad * chr(pad)
encryptor = AES.new(key, AES.MODE_CBC, iv)
encrypt_text = encryptor.encrypt(text)
encrypt_text = base64.b64encode(encrypt_text)
return encrypt_text
def get_json(self, params, encSecKey):
data = {
"params": params,
"encSecKey": encSecKey
}
response = requests.post(self.song_url, headers=self.headers, data=data)
return response.content.decode()
def get_song_content(self, song_id):
params = self.get_params(song_id)
encSecKey = self.get_encSecKey()
json_text = self.get_json(params, encSecKey)
json_dict = json.loads(json_text)
song_real_url = json_dict.get('data')[0].get('url')
music_format = json_dict.get('data')[0].get('type')
song_content = self.parse_url(song_real_url) # 得到歌曲二进制数据
return song_content, music_format
def save_song(self, song_name, music_format, song_content, filename):
print(song_name, '开始下载')
with open('.\\' + filename + '\\' + song_name + '.' + music_format, 'wb') as f:
f.write(song_content)
print(song_name, '下载完成')
def run(self):
# 入口页面编写,获取真实url
real_url, api, filename = self.enter()
os.mkdir('.\\' + filename)
# print(real_url, api)
if real_url is None:
print('欢迎再次使用')
return
resp = self.parse_url(real_url) # 发送请求,获取响应
if api == '1' or api == '2':
# 得到的是歌单页面
# 提取数据,得到列表,包含的是每首歌的字典[{name},{id}],适用于歌单和专辑
song_id_name = self.get_song_id_name(resp)
# 调用下载模块,传递歌曲id编号,下载
for song in song_id_name:
song_id = list(song.values())[0]
song_name = list(song.keys())[0]
# print(song_name, song_id)
# 下边是获取歌曲真实的url请求得到数据
song_content, music_format = self.get_song_content(song_id)
self.save_song(song_name, music_format, song_content, filename)
elif api == '3':
# 单曲
html_ele = etree.HTML(resp.decode())
song_name = html_ele.xpath('//em[@class=f-ff2]/text()')
song_id = real_url.split('=')[-1]
song_content, music_format = self.get_song_content(song_id)
self.save_song(song_name, music_format, song_content, filename)
if __name__ == '__main__':
netease = MusicDownload()
netease.run()