python 登录 提交表单数据

# !/usr/bin/env python
# -*- coding: utf-8 -*-
import urllib2
import urllib
import cookielib
import json
import httplib
import re
import requests
import os
import time
import requests, requests.utils, pickle
try:
    import cookielib  # 兼容Python2
except:
    import http.cookiejar as cookielib

s=requests.session()
print s.headers
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

# with open('cook.txt', 'r') as f:
#    cookies = json.loads(f.read())
# print cookies

# try:
#     with open("cookies.txt", "r") as f:
#         load_cookies = json.loads(f.read())
#     s.cookies = requests.utils.cookiejar_from_dict(load_cookies)
#     print s.get('https://fms.lvchengcaifu.com/welcome').content
# except:
#
url = "https://oauth2.lvchengcaifu.com/login"
headers={
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0',
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',

}
r= s.get(url,headers=headers,verify=False)
r=r.text
print r
print type(r)
r = r.encode('unicode-escape')
print type(r)
p = re.compile('.*_csrf"s+value="(.*?)".*')
m = p.match(r)
token = m.group(1)
print token
headers={
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0',
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'csrf_token': token
}
imgurl='https://oauth2.lvchengcaifu.com/Kaptcha.jpg'
r = s.get(imgurl)
r = r.content
# print s
print type(r)
print r
filename = 'E:image.jpg'
local = open(filename, 'wb')
local.write(r)
local.close()
print "登录二维码已经下载到本地" + "[" + filename + "]"

 ##打开图片
os.system("start %s" % filename);
code = raw_input('输入验证码： ')
print code
print len(code)

## <input type="hidden" id="_csrf" name="_csrf" value="6f772fd9-14da-40c4-b317-e8d9a4336203" />
login_url='https://oauth2.lvchengcaifu.com/login/form'
data = {'username': '1111', 'password': '2222@', '_csrf': token,'validCode':code}
response = s.post(login_url, data=data,headers=headers)
print  response.content
aa=s.cookies
print '-------------------------------------'
print aa