python 爬虫登录保存会话去获取只有登录能获取的数据

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# import ConfigParserimport datetime
import sys
import requests
from requests.cookies import RequestsCookieJar
from bs4 import BeautifulSoup
import log_config
import time
import random
import redef is_form_hash(tag):
return tag.has_attr('name') and tag.get('name') == 'formhash'def is_refer(tag):
return tag.has_attr('name') and tag.get('name') == 'referer'class haifeng_crawler: def __init__(self, user_name, pass_word):
self.cookies = dict()
self.username = user_name
self.password = pass_word
self.session = requests.session() def update_cookies(self, new_cookies):
for key in new_cookies:
self.cookies[key] = new_cookies[key] def req_get(self, url):
requests.session().cookies = requests.utils.cookiejar_from_dict(self.cookies)
resp = self.session.get(url)
self.update_cookies(requests.utils.dict_from_cookiejar(resp.cookies))
print(self.cookies)
return resp def req_post(self, url, data):
requests.session().cookies = requests.utils.cookiejar_from_dict(self.cookies)
resp = self.session.post(url, data)
self.update_cookies(requests.utils.dict_from_cookiejar(resp.cookies))
#print(self.cookies)
return resp def login(self):
url = 'http://www.96bbs.com/member.php?mod=logging&action=login&infloat=yes&handlekey=login&inajax=1&ajaxtarget=fwin_content_login'
page_res = self.req_get(url)
#print(page_res.text)
soup = BeautifulSoup(page_res.text, "html.parser")
rt = soup.find('root')
if rt:
rt = rt.text
soup = BeautifulSoup(rt, "html.parser")
else:
return None;
#print(rt);
bb = is_form_hash
cc = is_refer
formhash = soup.find(bb).get("value")
referer = soup.find(cc).get("value")
print(formhash)
print(referer)
url = 'http://www.96bbs.com/member.php?mod=logging&action=login&loginsubmit=yes&handlekey=login&loginhash=LVCbx&inajax=1'
data = {
'formhash': formhash,
'referer': referer,
'username': self.username,
'password': '加密后的密码',
'questionid': 0,
'answer': ''
}
resp = self.req_post(url,data)
soup = BeautifulSoup(resp.text, "html.parser")
rt = soup.find('root').text
print(rt) def visit_home(self):
url = 'http://www.96bbs.com/forum.php'
self.req_get(url) def visit_attachment(self,url):
resp = self.req_get(url)
print(resp.status_code)
print(resp.text)
return respif __name__ == "__main__": haifeng = haifeng_crawler("你的用户名","密码需要根据页面取获取加密后的密码")
haifeng.login()
haifeng.visit_attachment("http://www.96bbs.com/forum.php?mod=attachment&aid=MjI0NzQ5OHw3YjNkMWMwY3wxNTQwMzYxMzEwfDQ5NzM5OXwzNTM5NTgy")