python接口自动化： CAS系统验证，自动完成登录并获取token，遇到302请求重定向设置（requests模块 allow_redirects=False）即可
import requests
import re
1 import requests 2 import re 3 4 class Crm_token(object): 5 try: 6 username=int(input("请输入登录手机号：\n")) 7 password=input("请输入登录密码：\n") 8 except Exception as error: 9 print("登录信息输入错误，错误信息%s"%(error)) 10 def __init__(self): 11 self.url_login_in='http://xxxx' 12 self.login_server='http://xxx/cas/eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.Imh0dHA6XC9cLzQ3LjEwNi4xNzguNDk6ODA4MlwvIg.8HSZHPyW7byY-MOVtFhdsiy_cpigL3RcStk9hGa8Su8' 13 self.return_url="http://xxxx/?return_url=xxx/" 14 def get_token(self,username=username,password=password): 15 headers_check_login={"Content-Type":"application/x-www-form-urlencoded"} 16 url_check_login='http://xxxx/Auth/checkLogin' #用户名密码验证接口 17 check_login_data='username=%d&password=%s'%(username,password) 18 request_check_login=requests.post(url=url_check_login,headers=headers_check_login,data=check_login_data) 19 response_login_message=request_check_login.json() 20 # print(response_login_message) 21 if response_login_message['msg'] == '成功' and response_login_message['code']==200: 22 print('begin---login---') 23 try: 24 session=requests.Session() #建立session会话 25 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", 26 "Referer":self.return_url,"Content-Type":'application/x-www-form-urlencoded'} 27 url_login_1=self.url_login_in+'/CAS_server/login?action=getlt&service=%s&callback=jQuery33105752563290575323_1551706407492&_=1551706407493'%(self.login_server) 28 request1=session.request("GET",url=url_login_1,headers=headers1,data=None) #登录前动态参数获取url 29 response1=request1.text 30 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 31 get_lt=get_shouquan_str1['lt'] #提取授权参数1 32 get_execution=get_shouquan_str1['execution'] #提取授权参数2 33 cookies_login_1=request1.cookies.get_dict() #获取cookie：JSESSIONID 34 seesionId=cookies_login_1['JSESSIONID'] 35 requestSeesionId=str('JSESSIONID='+seesionId) #拼接为请求可用的cookie值 36 # print(requestSeesionId) 37 # print(get_lt) 38 # print(get_execution) 39 headers2={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8", 40 "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36", 41 "Content-Type":'application/x-www-form-urlencoded',"Cookie":requestSeesionId,"Referer":self.return_url} 42 url_login_2=self.url_login_in+'/CAS_server/login?service=%s'%(self.login_server) 43 #请求信息头必须传cookie，否则会一直返回登录页面 44 login_data='lt=%s&execution=%s&_eventId=submit&username=%s&password=%s&submit=登录'%(get_lt,get_execution,username,password) 45 # login_data='lt=%s&execution=%s&_eventId=submit&username=%d&password=%s'%(get_lt,get_execution,username,password) 46 #登录body，将获取到对的两个动态参数也传进去 47 request2=session.post(url=url_login_2,headers=headers2,data=login_data.encode(),allow_redirects=False) 48 #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 49 # request2=session.post(url=url_login_2,headers=headers2,data=login_data.encode(),allow_redirects=True) 50 response2=request2.text 51 responseHeaders2=request2.headers #获取reponse header 52 # print(response2) 53 # print(responseHeaders2) 54 url_chongdingxiang_st=responseHeaders2["location"] #获取重定向url 55 requests3=session.get(url=url_chongdingxiang_st,headers=headers2,data=None,allow_redirects=False) 56 response3=requests3.text 57 responseHeaders3=requests3.headers 58 php_session_cookie=responseHeaders3['Set-Cookie'] #获取php_session 59 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 60 # print(php_session_id) 61 # print(responseHeaders3) 62 url_chongdingxiang_get_ticket=responseHeaders3['location']#获取重定向url 63 headers3={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8", 64 "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36", 65 "Content-Type":'application/x-www-form-urlencoded',"Set-Cookie":php_session_id,"Referer":self.return_url} 66 requests4=session.get(url=url_chongdingxiang_get_ticket,headers=headers3,data=None,allow_redirects=False) 67 response4=requests4.text 68 responseHeaders4=requests4.headers 69 # print(responseHeaders4) 70 url_chongdingxiang_ticket=responseHeaders4['location'] #获取重定向url 71 requests5=session.get(url=url_chongdingxiang_ticket,headers=headers3,data=None,allow_redirects=False) 72 response5=requests5.text 73 responseHeaders5=requests5.headers 74 # print(responseHeaders5) 75 # print(response5) 76 ticket_data=re.search('(ticket.*)',url_chongdingxiang_ticket).group() #用正则匹配出ticket以及对应的value 77 headers4={"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8", 78 "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3493.3 Safari/537.36", 79 "Content-Type":'application/x-www-form-urlencoded',"Referer":url_chongdingxiang_ticket} #将headers来源地址更改为url_chongdingxiang_ticket 80 url_get_token='http://xxxx/Auth/login' #登录接口 81 requests_get_token=session.post(url=url_get_token,headers=headers3,data=ticket_data) 82 reponse6=requests_get_token.json() 83 crm_system_token=reponse6['data']['token'] 84 print('login---susscess---') 85 print('当前登陆手机号为:%s,token为:\n%s'%(username,crm_system_token)) 86 return crm_system_token 87 except BaseException as error: 88 print('登录错误，token获取失败，\n错误信息：%s'%(error)) 89 else: 90 print(response_login_message) 91 92 93 if __name__=="__main__": 94 tk=Crm_token() 95 tk.get_token()
脑子不够用当然只能脚踏实地的做事情！
