#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()