通过代理爬mzitu

#导入库

import os
import requests
from bs4 import BeautifulSoup
import time
from config import *
import random
import re
from requests import ConnectionError

#生成mzitu请求headers

def res_headers():
    headers = {
        'User-Agent': random.choice(USER_AGENT_LIST),
        'Referer':random.choice(REFERER_LIST),
    }
    return headers

　　#生成单个user-agent

def get_header():
    headers = {
        'User-Agent':random.choice(USER_AGENT_LIST)
    }
    return headers

　　#获取list后checkip返回可用ip

def get_proxy_list():
    ip_list = []
    base_url = 'https://www.xicidaili.com/wt/'
    header = get_header()
    actual_url = base_url + str(random.randint(1,300))
    try:
        res = requests.get(url=actual_url, headers=header)
        if res.status_code == 200:
            html = res.text
            pattern = '(\d+\.\d+\.\d+\.\d+)</td>\s*<td>(\d+)'
            re_list = re.findall(pattern, html)
            for ip_port in re_list:
                ip_port = ip_port[0] + ':' + ip_port[1]
                ip_list.append(ip_port)
            check_ip(ip_list)
        else:get_proxy_list()
    except ConnectionError:
        get_proxy_list()

　　#check 有效ip

def check_ip(ip_list):
    # print('check_ip')
    url_baidu = 'https://www.mzitu.com/'
    proxy_ip = 'http://' + random.choice(ip_list)
    proxy_ip_dic = {
        'http': proxy_ip
    }
    header = get_header()
    # print(proxy_ip_dic)
    try:
        res = requests.get(url_baidu, headers=header, proxies=proxy_ip_dic, timeout=8)
        if res.status_code == 200:
            # print(proxy_ip_dic)
            return proxy_ip_dic
    except ConnectionError:
        get_proxy_list()

　　#网站请求

def get_page(url):
    headers=res_headers()
    # 创建session
    s = requests.session()
    s.keep_alive = False
    # 获取页面
    res = s.get(url,headers=headers)
    html = res.text
    return html

　　#获取页面all girls的详情页url

def get_all_girls(url):
    html = get_page(url)
    # 构建soup页面
    soup = BeautifulSoup(html, 'html.parser')
    # 获取 class_='archives' 下的所有 'a'标签
    total_info = soup.find(class_='archives').find_all('a')
    # 遍历 'a' 标签，读取'href'值
    all_list=[]
    for girls_info in total_info:
        link_url = girls_info['href']
        all_list.append(link_url)
    # print(all_list)
    return all_list

　　#获取girl的所有图片url

def get_girl_all_page(url):
    html=get_page(url)
    soup = BeautifulSoup(html,'html.parser')
    # 在 class_='pagenavi' 中的倒数第3个标签，读取 'span' 的值（图片数量）
    max_page = soup.find(class_='pagenavi',).find_all('a')[-2].find('span').string
    title = soup.find(class_='main-title').string
    # 循环读取详情页面中的'img'标签中的'src'值
    pic_url_list = []
    for i in range(int(max_page)):
        html = get_page(url + "/%s"  %(i+1))
        # print(html)
        soup = BeautifulSoup(html,'html.parser')
        # print(soup.text)
        # pic_url = soup.find('img').get('src')
        pic_url = soup.find('img').get('src')
        # print(pic_url)
        pic_url_list.append(pic_url)
        time.sleep(0.1)
    # print(pic_url_list)
    download_Pic(title,pic_url_list)

　　#下载图片，以标题为文件夹名

def download_Pic(title, pic_url_list):
    # 新建文件夹，路径
    os.mkdir(title)
    headers = res_headers()
    proxy = get_proxy_list()
    # 自定义序列号
    j = 1
    # 下载图片
    for item in pic_url_list:
        # 定义文件路径及名称
        filename = '%s/%s.jpg' % (title, str(j))
        print('downloading....%s : NO.%s' % (title, str(j)))
        with open(filename, 'wb') as f:
            img = requests.get(item, headers=headers,proxies=proxy).content
            f.write(img)
        j += 1
    time.sleep(10)

　　#主程序

if __name__ == '__main__':
    url = "https://www.mzitu.com/all"
    pic_list = get_all_girls(url)
    for i in pic_list:
        get_girl_all_page(i)