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"""

音乐爬取器

"""

import os

from time import sleep



import requests

import json





def get_music_names(name_path, downloaded_path):

    """ 得到还没有下载的音乐名单

    :param name_path: 全部音乐名

    :param downloaded_path: 已经下载的文件

    :return:

    """

    with open(name_path, "r") as f:

        name_list = f.read()



    # 得到音乐名单

    music_names = name_list.split("\n")

    print("perpare music name", music_names)

    # 找到已经下载的文件名

    # index=2代表非目录名

    downloaded_musics = next(os.walk(downloaded_path))[2]

    print("have downloaded", downloaded_musics)

    # 排非除已经存在的名字

    music_names = list(filter(lambda x:

                              downloaded_musics.count(x + ".mp3") == 0,

                              music_names))

    print("after filter", music_names)

    # 返回需要下载的文件名

    return music_names





if __name__ == '__main__':

    # 初始化参数

    music_names = get_music_names("./music_names.txt", "./musics")

    url = 'http://www.guqiankun.com/tools/music/'

    body = {'filter': 'name', 'input': '', 'page': '1', 'type': 'netease'}

    headers = {

        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.3',

        'X-Requested-With': 'XMLHttpRequest'}



    for name in music_names:

        try:

            body["input"] = name

            # 得到response 并转为 json

            data = requests.post(url, data=body, headers=headers).text

            data = json.loads(data)

            # 音乐link

            link = data["data"][0]["url"]

            if link == "" or link == None:

                continue

            # 下载音乐

            music_response = requests.get(link, headers=headers)

            # 下载

            with open("./musics/" + name + ".mp3", "wb") as file:

                file.write(music_response.content)

            print(name, "下载完成")

            sleep(2)

        except Exception as e:

            print(e)

            continue

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