Python模拟登录东北大学校园卡主页

# -*- coding:utf-8 -*-

import requests
import random
import pytesseract
from bs4 import BeautifulSoup
from PIL import Image
import lxml

x = requests.session()
r = x.get('http://ecard.neu.edu.cn/SelfSearch/Login.aspx')
# print(r.text)

soup = BeautifulSoup(r.text, 'lxml')
view_state = soup.find('input', id = '__VIEWSTATE')['value']
event_validation = soup.find('input', id = '__EVENTVALIDATION')['value']
# print(view_state)
# print(event_validation)

a = x.get('http://ecard.neu.edu.cn/SelfSearch/validateimage.ashx?' + str(random.uniform(0,1)))

with open('a.jpg', 'wb') as file:
file.write(a.content)

i = Image.open('a.jpg')
code = pytesseract.image_to_string(i)
print(code)

data = {
'__EVENTVALIDATION':event_validation,
'__VIEWSTATE':view_state,
'__EVENTTARGET': 'btnLogin',
'txtUserName':'',    # username
'txtPassword':'',	 # password
'txtVaildateCode':code,
'hfIsManager': 0
}

b  = x.post('http://ecard.neu.edu.cn/SelfSearch/Login.aspx', data = data)
b.encoding = 'utf-8'

if('验证码错误' in str(b.content)):
print 'fail'
else:
print 'success'

c = x.get('http://ecard.neu.edu.cn/SelfSearch/User/Home.aspx')
print(c.text)