Python音乐下载器(for QQ music)

之前学习Python时，在GitHub上发现这个很有意思的下载器（虽然界面很丑陋hhhh)...

就是现在还不会爬虫，自己不会写（菜哭）

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界面是这样的：

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 这是代码--

# -*- coding: utf-8 -*-



import requests

import os



class MusicDownloader():

    '''

    QQ音乐下载器

    '''



    def search(self, song_name):

        '''搜索音乐'''

        headers = {'referer':'http://y.qq.com/portal/search.html',

                   'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'

                   }

        query_parameters = {'ct':'24',

                            'qqmusic_ver':'1298',

                            'new_json':'1',

                            'remoteplace':'txt.yqq.center',

                            'searchid':'48987344780034770',

                            't':'0',

                            'aggr':'1',

                            'cr':'1',

                            'catZhida':'1',

                            'lossless':'0',

                            'flag_qc':'0',

                            'p':'1', #分页

                            'n':'20', #显示的结果数量

                            'w':str(song_name), #必填搜索歌名

                            'g_tk':'5381',

                            'jsonpCallback':'MusicJsonCallback8319472269210575',

                            'loginUin':'0',

                            'hostUin':'0',

                            'format':'json', #json或者jsonp

                            'inCharset':'utf8',

                            'outCharset':'utf-8',

                            'notice':'0',

                            'platform':'yqq',

                            'needNewCode':'0'

                            }

        search_url = 'http://c.y.qq.com/soso/fcgi-bin/client_search_cp'



        req = requests.get(url=search_url, params=query_parameters, headers=headers)

        req.raise_for_status()

        req_json = req.json()

        song_list = list(req_json.get('data').get('song').get('list'))



        result_list = []

        for song in song_list:

            result = {}

            result['sid'] = song.get('id')

            result['mid'] = song.get('mid')

            result['media_mid'] = song.get('file').get('media_mid')

            result['song_title'] = song.get('title') #歌名

            result['album_title'] = song.get('album').get('title') #专辑名称

            result['singer_name'] = song.get('singer')[0].get('name') #歌手

            result['interval'] = song.get('interval') #时长

            result_list.append(result)



        self.print_song_list(result_list)

        req.close()

        return result_list



    def get_song_url(self, song):

        '''获取歌曲'''

        headers = {'referer':'http://y.qq.com/portal/search.html',

                   'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'

                   }

        query_parameters = {'g_tk':'5381',

                            # 'jsonpCallback':'MusicJsonCallback8064462801977872',

                            'loginUin':'0',

                            'hostUin':'0',

                            'format':'json',

                            'inCharset':'utf8',

                            'outCharset':'utf-8',

                            'notice':'0',

                            'platform':'yqq',

                            'needNewCode':'0',

                            'cid':'205361747',

                            # 'callback':'MusicJsonCallback8064462801977872', #注释可以关闭jsonp

                            'uin':'0',

                            'songmid':str(song.get('mid')),

                            'filename':'C400'+str(song.get('media_mid'))+'.m4a',

                            'guid':'6179861260'

                            }

        song_url = 'http://c.y.qq.com/base/fcgi-bin/fcg_music_express_mobile3.fcg'



        req = requests.get(url=song_url, params=query_parameters, headers=headers)

        req.raise_for_status()

        req_json = req.json()

        item = req_json.get('data').get('items')[0]

        req.close()



        return item



    def download(self, item, song):

        '''

        下载歌曲

        '''

        root = os.path.abspath('.')

        save_dir = os.path.join(root,'python下载音乐')

        if not os.path.exists(save_dir):

            os.mkdir(save_dir)



        headers = {'referer':'http://y.qq.com/portal/search.html',

                   'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'

                   }

        query_parameters = {'guid':'6179861260',

                            'vkey':item.get('vkey'),

                            'uin':'',

                            'fromtag':'999'

                            }

        download_url = 'http://dl.stream.qqmusic.qq.com/'+item.get('filename')



        with requests.get(url=download_url, params=query_parameters, headers=headers, stream=True) as req:

            req.raise_for_status()

            chunk_size = 1024

            count = 0

            total_size = int(req.headers['content-length'])

            print('>>>歌曲：{} | 歌手：{}\t开始下载↓'.format(song.get('song_title'),song.get('singer_name')))

            with open(os.path.join(save_dir, song.get('song_title')+'.m4a'), 'wb') as music_file:

                for music in req.iter_content(chunk_size=chunk_size):

                    music_file.write(music)

                    count = count + 1

                    self.schedule(count, chunk_size, total_size)



        music_file.close()

        req.close()





    def schedule(self, block_num, block_size, total_size):

        '''

        下载进度

        :param block_num:

        :param block_size:

        :param total_size:

        :return:

        '''

        per = 100.0 * block_num * block_size / total_size

        end_str = "\r"

        if per > 100:

            per = 100

            end_str = '\n'

        print('下载进度：%s%d%%'%('■'*int(per/2),per), end=end_str)



    def print_song_list(self, song_list):

        '''

        格式输出歌曲列表

        :param song_list:

        :return:

        '''

        print('\n编号\t|歌曲\t|歌手\t|时长\t|专辑')

        print('----------------------------------')

        for key, song in enumerate(song_list):

            mm = int(song.get('interval')) // 60

            mm = str(mm) if mm >= 10 else '0'+str(mm)

            ss = int(song.get('interval')) % 60

            ss = str(ss) if ss >= 10 else '0'+str(ss)

            print('{}\t|{}\t|{}\t|{}\t|{}\t'.format(

                key,

                song.get('song_title'),

                song.get('singer_name'),

                mm+':'+ss,

                song.get('album_title')

            ))

        print('----------------------------------\n')



    def start_download(self):

        '''开始下载'''

        print('■■■■■■■■■■■■■■■■■■■■')

        print('\n            QQ音乐下载器\n')

        print('■■■■■■■■■■■■■■■■■■■■')

        host = 'http://y.qq.com/'

        headers = {'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'}

        try:

            req = requests.get(url=host,headers=headers)

            req.raise_for_status()

            req.close()

        except:

            print('无法访问y.qq.com，请检测是否联网或网址是否有效！！！')

            return None



        while True:

            try:

                song_name = input('\n> 搜索（请输入歌名）：')

                search_result = self.search(song_name)

            except Exception as e:

                print(e)

                print('歌曲搜索失败！！！请结束下载')

            try:

                num = int(input('> 请输入歌曲编号：'))

                song_result = self.get_song_url(search_result[num])

            except Exception as e:

                print(e)

                print('歌曲解析失败！！！请结束下载')

            try:

                self.download(song_result, search_result[num])

            except Exception as e:

                print(e)

                print('歌曲下载失败！！！请结束下载')



            is_continue = input('是否继续下载（y/n）：')

            if is_continue.lower() == 'n':

                break;

        print('>>>退出下载')

if __name__=='__main__':

    md = MusicDownloader()

    md.start_download()