这个例子也不是我本意,不过好像大家都喜欢爬这类图片本人抱着学习技术的态度 深入研究,了解啦其过程(滑稽)
建议: 编译器debug运行,加上浏览器开发者调试 会有更加容易了解
代码语言：javascript复制#coding=utf-8
#!/usr/bin/python
# 导入requests库
import requests
# 导入文件操作库
import os
import bs4
from bs4 import BeautifulSoup
import sys
import importlib
import random
import time
importlib.reload(sys)
# 越多越好
meizi_headers = [
"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36",
"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/537.75.14",
"Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Win64; x64; Trident/6.0)",
'Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11',
'Opera/9.25 (Windows NT 5.1; U; en)',
'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)',
'Mozilla/5.0 (compatible; Konqueror/3.5; Linux) KHTML/3.5.5 (like Gecko) (Kubuntu)',
'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.12) Gecko/20070731 Ubuntu/dapper-security Firefox/1.5.0.12',
'Lynx/2.8.5rel.1 libwww-FM/2.14 SSL-MM/1.4.1 GNUTLS/1.2.9',
"Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.7 (KHTML, like Gecko) Ubuntu/11.04 Chromium/16.0.912.77 Chrome/16.0.912.77 Safari/535.7",
"Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:10.0) Gecko/20100101 Firefox/10.0",
'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36'
]
# 给请求指定一个请求头来模拟chrome浏览器
global headers
headers = {'User-Agent': random.choice(meizi_headers)}
# 爬图地址
mziTu = 'http://www.mzitu.com/'
# 定义存储位置
global save_path
save_path = '/Users/cuixiaoyan/Downloads/a'
# 创建文件夹
def createFile(file_path):
if os.path.exists(file_path) is False:
os.makedirs(file_path)
# 切换路径至上面创建的文件夹
os.chdir(file_path)
# 下载文件
def download(page_no, file_path):
global headers
res_sub = requests.get(page_no, headers=headers)
# 解析html
soup_sub = BeautifulSoup(res_sub.text, 'html.parser')
# 获取页面的栏目地址
all_a = soup_sub.find('div',class_='postlist').find_all('a',target='_blank')
count = 0
for a in all_a:
count = count 1
if (count % 2) == 0:
headers = {'User-Agent': random.choice(meizi_headers)}
print("内页第几页：" str(count))
# 提取href
href = a.attrs['href']
print("套图地址：" href)
res_sub_1 = requests.get(href, headers=headers)
soup_sub_1 = BeautifulSoup(res_sub_1.text, 'html.parser')
# ------ 这里最好使用异常处理 ------
try:
# 获取套图的最大数量
pic_max = soup_sub_1.find('div', class_='pagenavi').find_all('span')[6].text
print("套图数量：" pic_max)
for j in range(1, int(pic_max) 1):
# 单位为秒，1-3 随机数
time.sleep(random.randint(1, 3))
headers = {'User-Agent': random.choice(meizi_headers)}
# print("子内页第几页：" str(j))
# j int类型需要转字符串
href_sub = href "/" str(j)
print("图片地址：" href_sub)
res_sub_2 = requests.get(href_sub, headers=headers)
soup_sub_2 = BeautifulSoup(res_sub_2.text, "html.parser")
img = soup_sub_2.find('div', class_='main-image').find('img')
if isinstance(img, bs4.element.Tag):
# 提取src
url = img.attrs['src']
array = url.split('/')
file_name = array[len(array)-1]
# 防盗链加入Referer
headers = {'User-Agent': random.choice(meizi_headers), 'Referer': url}
img = requests.get(url, headers=headers)
print('开始保存图片', img)
f = open(file_name, 'ab')
f.write(img.content)
print(file_name, '图片保存成功！')
f.close()
except Exception as e:
print(e)
# 主方法
def main():
res = requests.get(mziTu, headers=headers)
# 使用自带的html.parser解析
soup = BeautifulSoup(res.text, 'html.parser')
# 创建文件夹
createFile(save_path)
# 获取首页总页数
img_max = soup.find('div', class_='nav-links').find_all('a')[3].text
# print("总页数:" img_max)
for i in range(1, int(img_max) 1):
# 获取每页的URL地址
if i == 1:
page = mziTu
else:
page = mziTu 'page/' str(i)
file = save_path '\' str(i)
createFile(file)
# 下载每页的图片
print("套图页码：" page)
download(page, file)
if __name__ == '__main__':
main()
