スレッド プールの 4K 壁紙のダウンロード

学習記録

学習記録

1. 目標

aHR0cHM6Ly9waWMubmV0Ymlhbi5jb20vDQo=

 各画像の href とタイトルを取得し、詳細ページに移動して画像のダウンロード アドレスを抽出し、画像のローカル ダウンロードの実現を要求します。

2. コードの実装

"""
CSDN: 抄代码抄错的小牛马
mailbox：[email protected]
"""
import os
import time
from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor

import requests
from lxml import etree

from userAgentPooL import userAgent
from ipPooL import IP

UA = userAgent.get_ua()


def get_data(url):
    start = time.time()
    futures = []
    # 创建 20 个线程池 with as 不用手动关闭
    with ThreadPoolExecutor(max_workers=20) as pool:
        # with ProcessPoolExecutor(max_workers=20) as pool:
        for i in url:
            headers = {
                'User-Agent': UA,
                'Referer': 'https://www.igdcc.com/'
            }
            print(f'主页：{headers["User-Agent"]}')
            proxies = IP.get_ip()
            resp = requests.get(url=i, headers=headers, proxies=proxies)
            print(resp)
            resp.encoding = 'gbk'
            content = resp.text

            tree = etree.HTML(content)
            li_list = tree.xpath('//div[@class="slist"]/ul[@class="clearfix"]/li')

            for item in li_list:
                headers = {
                    'User-Agent': UA,
                    'Referer': 'https://pic.netbian.com/'
                }
                href = 'https://pic.netbian.com/' + item.xpath('./a/@href')[0]

                proxies = IP.get_ip()

                img_HTML = requests.get(url=href, headers=headers, proxies=proxies)
                img_HTML.encoding = 'gbk'
                img_data = img_HTML.text
                new_tree = etree.HTML(img_data)
                src = 'https://pic.netbian.com/' + new_tree.xpath('//div[@class="photo-pic"]/a/img/@src')[0]
                title = new_tree.xpath('//div[@class="view"]/div[2]/a/img/@alt')[0]
                # 将耗时的任务放到线程池中来执行
                f = pool.submit(download, src=src, title=title)
                futures.append(f)
    for f in futures:
        f.result()
    print('一共花费时间', time.time() - start)


def download(src, title):
    img_content = requests.get(url=src).content
    if not os.path.exists('./ThreadpicPool'):
        os.mkdir('./ThreadpicPool')
    with open('./ThreadpicPool/%s.jpg' % title, 'wb') as fp:  # wb 是写入二进制的，图片是二进制。
        fp.write(img_content)
    print('{%s}下载成功！！！' % title)

    pass


def main():
    print('----------------彼岸图网壁纸采集----------------')
    star_page = int(input('请输入起始页：'))
    end_page = int(input('请终止起始页：'))
    url = []
    for page in range(star_page, end_page + 1):
        if end_page == 1:
            url.append('https://pic.netbian.com/index.html')
            break
        else:
            if page == 1:
                url.append('https://pic.netbian.com/index.html')
            else:
                url.append(f' https://pic.netbian.com/index_{page}.html')

    get_data(url)

    pass


if __name__ == '__main__':
    main()

効果：