xpath爬取喜马拉雅糗事播报音频地址

import requests
from lxml import etree
import time

headers = {
    'authority': 'mermaid   .ximalaya.com',
    'cache-control': 'no-cache',
    'upgrade-insecure-requests': '1',
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36',
    'accept': '*/*',
    'sec-fetch-site': 'same-site',
    'sec-fetch-mode': 'cors',
    'sec-fetch-user': '?1',
    'sec-fetch-dest': 'empty',
    'referer': 'https://www.ximalaya.com/yule/3493173/',
    'accept-language': 'zh-CN,zh;q=0.9',
    'cookie': '_xmLog=h5^&2e54f20f-24dc-48df-a0c0-5e4d5bc28df5^&2.1.2; x_xmly_traffic=utm_source^%^253A^%^2526utm_medium^%^253A^%^2526utm_campaign^%^253A^%^2526utm_content^%^253A^%^2526utm_term^%^253A^%^2526utm_from^%^253A; Hm_lvt_4a7d8ec50cfd6af753c4f8aee3425070=1608252623,1608253346,1608253440,1608253957; Hm_lpvt_4a7d8ec50cfd6af753c4f8aee3425070=1608253968',
    'Referer': 'https://www.ximalaya.com/yule/3493173/',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36',
    'Origin': 'https://www.ximalaya.com',
    'if-modified-since': 'Wed, 28 Nov 2018 07:43:22 GMT',
    'Connection': 'keep-alive',
    'Accept': '*/*',
    'Sec-Fetch-Site': 'cross-site',
    'Sec-Fetch-Mode': 'no-cors',
    'Sec-Fetch-Dest': 'script',
    'Accept-Language': 'zh-CN,zh;q=0.9',
    'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8',
    'xm-sign': '24393343084be486d4ce4228bc83f4a8(37)0(18)1608256264690',
    'content-type': 'application/octet-stream',
    'origin': 'https://www.ximalaya.com',
    'If-None-Match': 'f45020c793859650e0da4f3720059922',
    'pragma': 'no-cache',
}


def get_html(url):
    time.sleep(0.5)
    response = requests.get(url, headers=headers)
    response.encoding = response.apparent_encoding
    return response

def html_parse(text):
    tree = etree.HTML(text)
    return tree

def save(url, name):
    print(url)
    response = requests.get(url)
    with open("./糗事播报/%s.m4a" % name, "wb") as f:
        f.write(response.content)

def get_m4a(id, title):
    url = 'https://www.ximalaya.com/revision/play/v1/audio?id=%s&ptype=1' % id
    response = get_html(url).json()
    yinpin_url = response["data"]["src"]
    print("开始下载----%s" % title)
    save(yinpin_url, title)
    print("下载完成----%s" % title)



def main(url):
    """
        接收介绍页的url，通过xpath解析出来每一个音频的id值、标题。
    :param url: 介绍页的url
    :return: 
    """
    response = get_html(url)
    tree = html_parse(response.text)
    res_urls = tree.xpath('//*[@id="anchor_sound_list"]/div[2]/ul/li/div[2]/a/@href')
    yinpin_titles = tree.xpath('//*[@id="anchor_sound_list"]/div[2]/ul/li/div[2]/a/@title')
    for res, yinpin_title in zip(res_urls, yinpin_titles):
        get_m4a(res.split("/")[-1], yinpin_title)


if __name__ == '__main__':
    for i in range(10):
        if i == 0:
            url = "https://www.ximalaya.com/yule/3493173/"
        else:
            url = "https://www.ximalaya.com/yule/3493173/p%s/" % (i+1)
        print("-----开始下载第%s页内容------" % (i+1))
        main(url)