python实现: CAS系统验证,完成登录并获取token

import requests
import re

class Crm_token(object):
try:
username=int(input("请输入登录手机号:\n"))
password=input("请输入登录密码:\n")
except Exception as error:
print("登录信息输入错误,错误信息%s"%(error))
def __init__(self):
self.url_login_in='http://XXXX'
self.login_server='http://XXXX/cas/eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.Imh0dHA6XC9cLzQ3LjEwNi4xNzguNDk6ODA4MlwvIg.8HSZHPyW7byY-MOVtFhdsiy_cpigL3RcStk9hGa8Su8'
self.return_url="http://XXX/?return_url=XXXX"
def get_token(self,username=username,password=password):
headers_check_login={"Content-Type":"application/x-www-form-urlencoded"}
url_check_login='XXXX/Auth/checkLogin'
check_login_data='username=%d&password=%s'%(username,password)
request_check_login=requests.post(url=url_check_login,headers=headers_check_login,data=check_login_data)
response_login_message=request_check_login.json()
# print(response_login_message)
if response_login_message['msg'] == '成功' and response_login_message['code']==200:
print('begin---login---')
try:
session=requests.Session() #建立session会话
headers1={"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36",
"Referer":self.return_url,"Content-Type":'application/x-www-form-urlencoded'}
url_login_1=self.url_login_in+'/CAS_server/login?action=getlt&service=%s&callback=jQuery33105752563290575323_1551706407492&_=1551706407493'%(self.login_server)
request1=session.request("GET",url=url_login_1,headers=headers1,data=None) #登录前动态参数获取url
response1=request1.text
get_shouquan_str1=eval(re.search('{.*}',response1).group()) #匹配出字典内的内容并用eval方法将str转换为dict
get_lt=get_shouquan_str1['lt'] #提取授权参数1
get_execution=get_shouquan_str1['execution'] #提取授权参数2
cookies_login_1=request1.cookies.get_dict() #获取cookie:JSESSIONID
seesionId=cookies_login_1['JSESSIONID']
requestSeesionId=str('JSESSIONID='+seesionId) #拼接为请求可用的cookie值
# print(requestSeesionId)
# print(get_lt)
# print(get_execution)
headers2={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36",
"Content-Type":'application/x-www-form-urlencoded',"Cookie":requestSeesionId,"Referer":self.return_url}
url_login_2=self.url_login_in+'/CAS_server/login?service=%s'%(self.login_server)
#请求信息头必须传cookie,否则会一直返回登录页面
login_data='lt=%s&execution=%s&_eventId=submit&username=%s&password=%s&submit=登录'%(get_lt,get_execution,username,password)
# login_data='lt=%s&execution=%s&_eventId=submit&username=%d&password=%s'%(get_lt,get_execution,username,password)
#登录body,将获取到对的两个动态参数也传进去
request2=session.post(url=url_login_2,headers=headers2,data=login_data.encode(),allow_redirects=False)
#allow_redirects=False,禁止请求重定向:为了获取重定向url,requests模块默认请求重定向
# request2=session.post(url=url_login_2,headers=headers2,data=login_data.encode(),allow_redirects=True)
response2=request2.text
responseHeaders2=request2.headers #获取reponse header
# print(response2)
# print(responseHeaders2)
url_chongdingxiang_st=responseHeaders2["location"] #获取重定向url
requests3=session.get(url=url_chongdingxiang_st,headers=headers2,data=None,allow_redirects=False)
response3=requests3.text
responseHeaders3=requests3.headers
php_session_cookie=responseHeaders3['Set-Cookie'] #获取php_session
php_session_id=re.search("(\w*\W*\w*)",php_session_cookie).group() #用正则匹配出所需要的php_session_id
# print(php_session_id)
# print(responseHeaders3)
url_chongdingxiang_get_ticket=responseHeaders3['location']#获取重定向url
headers3={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36",
"Content-Type":'application/x-www-form-urlencoded',"Set-Cookie":php_session_id,"Referer":self.return_url}
requests4=session.get(url=url_chongdingxiang_get_ticket,headers=headers3,data=None,allow_redirects=False)
response4=requests4.text
responseHeaders4=requests4.headers
# print(responseHeaders4)
url_chongdingxiang_ticket=responseHeaders4['location'] #获取重定向url
requests5=session.get(url=url_chongdingxiang_ticket,headers=headers3,data=None,allow_redirects=False)
response5=requests5.text
responseHeaders5=requests5.headers
# print(responseHeaders5)
# print(response5)
ticket_data=re.search('(ticket.*)',url_chongdingxiang_ticket).group() #用正则匹配出ticket以及对应的value
headers4={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36",
"Content-Type":'application/x-www-form-urlencoded',"Referer":url_chongdingxiang_ticket} #将headers来源地址更改为url_chongdingxiang_ticket
url_get_token='http://47.106.178.49:8099/Auth/login' #登录接口
requests_get_token=session.post(url=url_get_token,headers=headers3,data=ticket_data)
reponse6=requests_get_token.json()
crm_system_token=reponse6['data']['token']
print('login---susscess---')
print('当前登陆手机号为:%s,token为:\n%s'%(username,crm_system_token))
return crm_system_token
except BaseException as error:
print('登录错误,token获取失败,\n错误信息:%s'%(error))
else:
print(response_login_message)


if __name__=="__main__":
tk=Crm_token()
tk.get_token()

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转载自www.cnblogs.com/qtclm/p/10507318.html
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