今日头条街拍数据:
- 获取页面:https://www.toutiao.com/search/?keyword=%E8%A1%97%E6%8B%8D的页面中的ajax加载的数据。经过分析页面时数据流的形式展现数据,在浏览器 F12 - Network选项 - XHR中查看到ajax的请求信息,其中 request url为:
- 解析数据目标:
- title : 标题名
- image_list : 图片url列表
- 存储方式:以标题为文件夹名,将图片下载至该文件夹中。
代码:
import requests
import json
import os
from urllib.request import urljoin
from urllib.parse import urlencode
from hashlib import md5
# 获取单页数据
def getOnePage(offset):
data = {
'offset': offset,
'format': 'json',
'keyword': '街拍',
'autoload': 'true',
'count': '20',
'cur_tab': '1',
'from': 'search_tab',
}
try:
url = 'https://www.toutiao.com/search_content/?' + urlencode(data)
response = requests.get(url)
if response.status_code == requests.codes.ok:
return response.json()
except Exception as f:
print(f)
return None
# 解析单页数据
def parseOnePage(content):
if content.get('data'):
for item in content.get('data'):
title = item.get('title')
if title is not None:
imgList = item.get('image_list')
for imgUrl in imgList:
yield {
'title': title,
'imgUrl': 'http:'+imgUrl.get('url')
}
# 下载图片
def downloadImg(item):
if not os.path.exists(item.get('title')):
os.mkdir(item.get('title'))
try:
response = requests.get(item.get('imgUrl'))
print(response.status_code)
if response.status_code == requests.codes.ok:
fileName = md5(response.content).hexdigest() + '.jpg'
filePath = os.path.join(item.get('title'),fileName)
if not os.path.exists(filePath):
with open(filePath, 'wb') as f:
f.write(response.content)
else:
print('file already Download', filePath)
except Exception as e:
print('file download failed!', item.get('imgUrl'))
def main(offset):
content = getOnePage(offset)
for item in parseOnePage(content):
downloadImg(item)
if __name__ == '__main__':
# 使用进程池
from multiprocessing.pool import Pool
pool = Pool()
GROUP_START = 1
GROUP_END = 20
groups = ([i*20 for i in range(GROUP_START, GROUP_END+1)])
pool.map(main, groups)
pool.close()
pool.join()