import os

import re

import json

import requests

from lxml import etree

def download_songs(url=None):

     if url is None:

         url = 'https://music.163.com/#/playlist?id=2384642500'

     url = url.replace('/#', '').replace('https', 'http')  # 对字符串进行去空格和转协议处理

     # 网易云音乐外链 url 接口： http://music.163.com/song/media/outer/url?id=xxxx

     out_link = 'http://music.163.com/song/media/outer/url?id='

     # 请求头

     headers = {

         'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36',

         'Referer': 'https://music.163.com/',

         'Host': 'music.163.com'

     }

     # 请求页面的源码

     res = requests.get(url=url, headers=headers).text

     tree = etree.HTML(res)

     # 音乐列表

     song_list = tree.xpath('//ul[@class="f-hide"]/li/a')

     # 如果是歌手页面

     artist_name_tree = tree.xpath('//h2[@id="artist-name"]/text()')

     artist_name = str(artist_name_tree[0]) if artist_name_tree else None

     # 如果是歌单页面：

     #song_list_tree = tree.xpath('//*[@id="m-playlist"]/div[1]/div/div/div[2]/div[2]/div/div[1]/table/tbody')

     song_list_name_tree = tree.xpath('//h2[contains(@class,"f-ff2")]/text()')

     song_list_name = str(song_list_name_tree[0]) if song_list_name_tree else None

     # 设置音乐下载的文件夹为歌手名字或歌单名

     folder = './' + artist_name if artist_name else './' + song_list_name

     if not os.path.exists(folder):

         os.mkdir(folder)

     for i, s in enumerate(song_list):

         href = str(s.xpath('./@href')[0])

         song_id = href.split('=')[-1]

         src = out_link + song_id  # 拼接获取音乐真实的 src 资源值

         title = str(s.xpath('./text()')[0])  # 音乐的名字

         filename =外汇跟单gendan5.com title + '.mp3'

         filepath = folder + '/' + filename

         print(' 开始下载第 {} 首音乐： {}\n'.format(i + 1, filename))

         try:  # 下载音乐

             # 下载歌词

             #download_lyric(title, song_id)

             data = requests.get(src).content  # 音乐的二进制数据

             with open(filepath, 'wb') as f:

                 f.write(data)

         except Exception as e:

             print(e)

     print('{} 首全部歌曲已经下载完毕！ '.format(len(song_list)))

def download_lyric(song_name, song_id):

     url = 'http://music.163.com/api/song/lyric?id={}&lv=-1&kv=-1&tv=-1'.format(song_id)

     # 请求头

     headers = {

         'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36',

         'Referer': 'https://music.163.com/',

         'Host': 'music.163.com'

         # 'Origin': 'https://music.163.com'

     }

     # 请求页面的源码

     res = requests.get(url=url, headers=headers).text

     json_obj = json.loads(res)

     lyric = json_obj['lrc']['lyric']

     reg = re.compile(r'\[.*\]')

     lrc_text = re.sub(reg, '', lyric).strip()

     print(song_name, lrc_text)

if __name__ == '__main__':

     #music_list = 'https://music.163.com/#/playlist?id=2384642500' # 歌曲清单

     music_list = 'https://music.163.com/#/artist?id=8325' # 歌手排行榜

     # music_list = 'https://music.163.com/#/search/m/?order=hot&cat= 全部 &limit=435&offset=435&s= 梁静茹 ' # 搜索列表

     download_songs(music_list)