如何使用python批量下载网易云音乐的免费音乐

# -*- coding:utf-8 -*- import requests, hashlib, sys, click, re, base64, binascii, json, os from Crypto.Cipher import AES from http import cookiejar """ Website:http://cuijiahua.com Author:Jack Cui Refer:https://github.com/darknessomi/musicbox """ class Encrypyed(): """ 解密算法 """ def __init__(self): self.modulus = '00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7' self.nonce = '0CoJUm6Qyw8W8jud' self.pub_key = '010001' # 登录加密算法, 基于https://github.com/stkevintan/nw_musicbox脚本实现 def encrypted_request(self, text): text = json.dumps(text) sec_key = self.create_secret_key(16) enc_text = self.aes_encrypt(self.aes_encrypt(text, self.nonce), sec_key.decode('utf-8')) enc_sec_key = self.rsa_encrpt(sec_key, self.pub_key, self.modulus) data = {'params': enc_text, 'encSecKey': enc_sec_key} return data def aes_encrypt(self, text, secKey): pad = 16 - len(text) % 16 text = text + chr(pad) * pad encryptor = AES.new(secKey.encode('utf-8'), AES.MODE_CBC, b'0102030405060708') ciphertext = encryptor.encrypt(text.encode('utf-8')) ciphertext = base64.b64encode(ciphertext).decode('utf-8') return ciphertext def rsa_encrpt(self, text, pubKey, modulus): text = text[::-1] rs = pow(int(binascii.hexlify(text), 16), int(pubKey, 16), int(modulus, 16)) return format(rs, 'x').zfill(256) def create_secret_key(self, size): return binascii.hexlify(os.urandom(size))[:16] class Song(): """ 歌曲对象，用于存储歌曲的信息 """ def __init__(self, song_id, song_name, song_num, song_url=None): self.song_id = song_id self.song_name = song_name self.song_num = song_num self.song_url = '' if song_url is None else song_url class Crawler(): """ 网易云爬取API """ def __init__(self, timeout=60, cookie_path='.'): self.headers = { 'Accept': '*/*', 'Accept-Encoding': 'gzip,deflate,sdch', 'Accept-Language': 'zh-CN,zh;q=0.8,gl;q=0.6,zh-TW;q=0.4', 'Connection': 'keep-alive', 'Content-Type': 'application/x-www-form-urlencoded', 'Host': 'music.163.com', 'Referer': 'http://music.163.com/search/', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36' } self.session = requests.Session() self.session.headers.update(self.headers) self.session.cookies = cookiejar.LWPCookieJar(cookie_path) self.download_session = requests.Session() self.timeout = timeout self.ep = Encrypyed() def post_request(self, url, params): """ Post请求 :return: 字典 """ data = self.ep.encrypted_request(params) resp = self.session.post(url, data=data, timeout=self.timeout) result = resp.json() if result['code'] != 200: click.echo('post_request error') else: return result def search(self, search_content, search_type, limit=9): """ 搜索API :params search_content: 搜索内容 :params search_type: 搜索类型 :params limit: 返回结果数量 :return: 字典. """ url = 'http://music.163.com/weapi/cloudsearch/get/web?csrf_token=' params = {'s': search_content, 'type': search_type, 'offset': 0, 'sub': 'false', 'limit': limit} result = self.post_request(url, params) return result def search_song(self, song_name, song_num, quiet=True, limit=9): """ 根据音乐名搜索 :params song_name: 音乐名 :params song_num: 下载的歌曲数 :params quiet: 自动选择匹配最优结果 :params limit: 返回结果数量 :return: Song独享 """ result = self.search(song_name, search_type=1, limit=limit) if result['result']['songCount'] <= 0: click.echo('Song {} not existed.'.format(song_name)) else: songs = result['result']['songs'] if quiet: song_id, song_name = songs[0]['id'], songs[0]['name'] song = Song(song_id=song_id, song_name=song_name, song_num=song_num) return song def get_song_url(self, song_id, bit_rate=320000): """ 获得歌曲的下载地址 :params song_id: 音乐ID<int>. :params bit_rate: {'MD 128k': 128000, 'HD 320k': 320000} :return: 歌曲下载地址 """ url = 'http://music.163.com/weapi/song/enhance/player/url?csrf_token=' csrf = '' params = {'ids': [song_id], 'br': bit_rate, 'csrf_token': csrf} result = self.post_request(url, params) # 歌曲下载地址 song_url = result['data'][0]['url'] # 歌曲不存在 if song_url is None: click.echo('Song {} is not available due to copyright issue.'.format(song_id)) else: return song_url def get_song_by_url(self, song_url, song_name, song_num, folder): """ 下载歌曲到本地 :params song_url: 歌曲下载地址 :params song_name: 歌曲名字 :params song_num: 下载的歌曲数 :params folder: 保存路径 """ if not os.path.exists(folder): os.makedirs(folder) fpath = os.path.join(folder, str(song_num) + '_' + song_name + '.mp3') if sys.platform == 'win32' or sys.platform == 'cygwin': valid_name = re.sub(r'[<>:"/\\|?*]', '', song_name) if valid_name != song_name: click.echo('{} will be saved as: {}.mp3'.format(song_name, valid_name)) fpath = os.path.join(folder, str(song_num) + '_' + valid_name + '.mp3') if not os.path.exists(fpath): resp = self.download_session.get(song_url, timeout=self.timeout, stream=True) length = int(resp.headers.get('content-length')) label = 'Downloading {} {}kb'.format(song_name, int(length/1024)) with click.progressbar(length=length, label=label) as progressbar: with open(fpath, 'wb') as song_file: for chunk in resp.iter_content(chunk_size=1024): if chunk: song_file.write(chunk) progressbar.update(1024) class Netease(): """ 网易云音乐下载 """ def __init__(self, timeout, folder, quiet, cookie_path): self.crawler = Crawler(timeout, cookie_path) self.folder = '.' if folder is None else folder self.quiet = quiet def download_song_by_search(self, song_name, song_num): """ 根据歌曲名进行搜索 :params song_name: 歌曲名字 :params song_num: 下载的歌曲数 """ try: song = self.crawler.search_song(song_name, song_num, self.quiet) except: click.echo('download_song_by_serach error') # 如果找到了音乐, 则下载 if song != None: self.download_song_by_id(song.song_id, song.song_name, song.song_num, self.folder) def download_song_by_id(self, song_id, song_name, song_num, folder='.'): """ 通过歌曲的ID下载 :params song_id: 歌曲ID :params song_name: 歌曲名 :params song_num: 下载的歌曲数 :params folder: 保存地址 """ try: url = self.crawler.get_song_url(song_id) # 去掉非法字符 song_name = song_name.replace('/', '') song_name = song_name.replace('.', '') self.crawler.get_song_by_url(url, song_name, song_num, folder) except: click.echo('download_song_by_id error') if __name__ == '__main__': timeout = 60 output = 'Musics' quiet = True cookie_path = 'Cookie' netease = Netease(timeout, output, quiet, cookie_path) music_list_name = 'music_list.txt' # 如果music列表存在, 那么开始下载 if os.path.exists(music_list_name): with open(music_list_name, 'r') as f: music_list = list(map(lambda x: x.strip(), f.readlines())) for song_num, song_name in enumerate(music_list): netease.download_song_by_search(song_name,song_num + 1) else: click.echo('music_list.txt not exist.')

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