表单登录
代码如下：
import time
import requests
from bs4 import BeautifulSoup
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36',
}
url = 'https://www.zhihu.com'
def kill_captcha(data):
with open('1.gif', 'wb') as fp:
fp.write(data)
return input('captcha : ')
def login(username, password, kill_captcha):
session = requests.session()
_xsrf = session.get(url+'/#signin', headers=headers).cookies['_xsrf']
captcha_content = session.get(url+'/captcha.gif?r=%d&type=login' % (time.time() * 1000), headers=headers).content
data = {
'_xsrf': _xsrf,
'password': password,
'captcha': kill_captcha(captcha_content),
'email': username,
'remember_me': 'true'
# 字典的键值对顺序可以随机
}
resp = session.post(url+'/login/email', data=data, headers=headers).text
# 登录成功
assert r'\u767b\u5f55\u6210\u529f' in resp
return session
if __name__ == '__main__':
session = login(username, password, kill_captcha)
page = session.get(url, headers=headers).text
soup = BeautifulSoup(page, 'lxml').findAll('a', {'class': 'question_link'})
for s in soup:
print(s.get('href'))
模拟知乎表单登录，还需要手动输入验证码。用户登录的页面分为手机和email地址是不同的，这里演示的是email的登录，手机号登录post的url不同，其他没有区别，图片验证码的地址是一个时间戳.
