python爬取某音乐音频

累的时候，不妨听听音乐

知识点
1.requests库的使用
2.re正则表达式
3.json字符串
4.搜索歌曲爬取对应的音频文件
开发环境
1.python环境：annaconda5.2.0(python3.6.5)
2.编辑器：pycharm
爬取步骤

1. 分析网站，制定一个方案
   ——>右击检查
   
   ——>快捷键ctrl+F,调出搜索框
   
   ——>搜索歌曲专辑名称，查看数据是怎样返回的
   
   2.歌曲下载

import requests 

——>若没有安装request库，直接pip install requests进行安装

url = 'https://c.y.qq.com/soso/fcgi-bin/client_search_cp'

——>修改params数据类型为字典类型

——>ctrl+R,调出搜索框，输入正则表达式

params = {
    "ct": " 24",
    "qqmusic_ver": " 1298",
    "new_json": " 1",
    "remoteplace": " txt.yqq.song",
    "searchid": " 66595602585102401",
    "t": " 0",
    "aggr": " 1",
    "cr": " 1",
    "catZhida": " 1",
    "lossless": " 0",
    "flag_qc": " 0",
    "p": " 1",
    "n": " 10",
    "w": keyword,
    "g_tk_new_20200303": " 1390029147",
    "g_tk": " 1390029147",
    "loginUin": " 1164153961",
    "hostUin": " 0",
    "format": " json",
    "inCharset": " utf8",
    "outCharset": " utf-8",
    "notice": " 0",
    "platform": " yqq.json",
    "needNewCode": " 0"
}

——>歌曲下载

url1 = 'https://u.y.qq.com/cgi-bin/musicu.fcg'
params1 = {
    "-": "getplaysongvkey8636402145203543",
    "g_tk": "1390029147",
    "loginUin": "1164153961",
    "hostUin": "0",
    "format": "json",
    "inCharset": "utf8",
    "outCharset": "utf-8",
    "notice": "0",
    "platform": "yqq.json",
    "needNewCode": "0",
    "data": '{"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"7469768631","calltype":0,"userip":""}},"req_0":{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"7469768631","songmid":["' + songid + '"],"songtype":[0],"uin":"1164153961","loginflag":1,"platform":"20"}},"comm":{"uin":1164153961,"format":"json","ct":24,"cv":0}}'
}

完整代码

"""
[知识点]：
    1.requests库的使用
    2.re正则表达式
    3.json字符串
    4.搜索歌曲爬取对应的音频文件

[开发环境]：
    1.python环境：annaconda5.2.0(python3.6.5)
    2.编辑器：pycharm
"""

import requests
import re

headers = {
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36",
}
keyword = input('请输入你想下载的歌曲名：')
url = 'https://c.y.qq.com/soso/fcgi-bin/client_search_cp'
params = {
    "ct": " 24",
    "qqmusic_ver": " 1298",
    "new_json": " 1",
    "remoteplace": " txt.yqq.song",
    "searchid": " 66595602585102401",
    "t": " 0",
    "aggr": " 1",
    "cr": " 1",
    "catZhida": " 1",
    "lossless": " 0",
    "flag_qc": " 0",
    "p": " 1",
    "n": " 10",
    "w": keyword,
    "g_tk_new_20200303": " 1390029147",
    "g_tk": " 1390029147",
    "loginUin": " 1164153961",
    "hostUin": " 0",
    "format": " json",
    "inCharset": " utf8",
    "outCharset": " utf-8",
    "notice": " 0",
    "platform": " yqq.json",
    "needNewCode": " 0"
}
response = requests.get(url, params=params, headers=headers)
search_result = eval(re.findall('callback\((.*)\)', response.text)[0])
song_info = search_result['data']['song']['list']
songname = []
songmid = []
singer = []
for i in song_info:
    songname.append(i['songname'])
    songmid.append(i['songmid'])
    singer.append(i['singer'][0]['name'])
tplt = "{0:<10}\t{1:<10}\t{2:<20}"
print(tplt.format("序号", "歌手", "歌名"))
for i in range(len(songname)):
    print(tplt.format(i, singer[i], songname[i]))
songid = songmid[int(input('请输入序号选择你要下载的歌曲：'))]
url1 = 'https://u.y.qq.com/cgi-bin/musicu.fcg'
params1 = {
    "-": "getplaysongvkey8636402145203543",
    "g_tk": "1390029147",
    "loginUin": "1164153961",
    "hostUin": "0",
    "format": "json",
    "inCharset": "utf8",
    "outCharset": "utf-8",
    "notice": "0",
    "platform": "yqq.json",
    "needNewCode": "0",
    "data": '{"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"7469768631","calltype":0,"userip":""}},"req_0":{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"7469768631","songmid":["' + songid + '"],"songtype":[0],"uin":"1164153961","loginflag":1,"platform":"20"}},"comm":{"uin":1164153961,"format":"json","ct":24,"cv":0}}'
}
response = requests.get(url1, params=params1, headers=headers)
songlink = response.json()['req_0']['data']['midurlinfo'][0]['purl']
if songlink == '':
    print('这首歌是付费歌曲无法下载。')
else:
    with open(keyword + '.mp3', mode='wb') as f:
        f.write(requests.get('https://isure.stream.qqmusic.qq.com/' + songlink, headers=headers).content)

运行结果

——>成功下载