前言

今天的“受害者”为【猫耳FM】，一个音频网站

地址：https://www.missevan.com/sound/m/110

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知识点：

requests
time
re
concurrent.futures

开发环境：

版本：anaconda5.2.0（python3.6.5）
编辑器：pycharm

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导入模块

import time
import requests
import concurrent.futures
import re

通过函数式编程，实现各个功能模块

发送请求

def get_html(url):
    response = requests.get(url)
    return response

第一次解析

def parse(response):
    mp3_ids = re.findall('<a target="_player" href="/sound/(.*?)" title=".*?">', response.text)
    return mp3_ids

第二次解析

def parse_2(response):
    json_data = response.json()
    title = json_data['info']['sound']['soundstr']
    soundurl = json_data['info']['sound']['soundurl']
    return title, soundurl

保存数据

def save(title, mp3_data):
    with open('mp3\\' + title + '.mp3', mode='wb') as f:
        f.write(mp3_data)
        print(title, '下载完成!!!')

修改标题

def change_title(title):
    new_title = re.sub(r'[\//|:?<>"*]', '_', title)
    return new_title

主函数，调用里面包含的整体连贯

# 1. 发送请求
response = get_html(url)
# 2. 解析数据 soundid
mp3_ids = parse(response)
for mp3_id in mp3_ids:
    # 3. 请求另外详情页 地址拼接 https://www.missevan.com/sound/getsound?soundid=3922170
    mp3_url = 'https://www.missevan.com/sound/getsound?soundid=' + mp3_id
    resp_2 = get_html(mp3_url)
    # 4. 解析音频url地址 音频标题
    title, soundurl = parse_2(resp_2)
    # 修改标题
    title = change_title(title)
    # 5. 请求音频url地址 音频 二进制数据 content
    mp3_data = get_html(soundurl).content
    # 6. 下载保存 到本地
    save(title, mp3_data)

翻页

start_time = time.time()
for page in range(1, 5):
    print(f'----------正在爬取第{page}页-------------')
    run(f'https://www.missevan.com/sound/m?id=110&p={page}')
print('一共花费了:', time.time()-start_time)

多线程

if __name__ == '__main__':
    start_time = time.time()
    with concurrent.futures.ThreadPoolExecutor(max_workers=1000) as executor:
        for page in range(1, 5):
            url = f'https://www.missevan.com/sound/m?id=110&p={page}'
            executor.submit(run, url)
    print('一共花费了:', time.time()-start_time)