登录界面

京东的登录表单设置了许多隐藏字段，如下所示：

隐藏字段

所以都要获取下来。

同样也是输错三次之后出现authcode。

验证码

import requests
from bs4 import BeautifulSoup
import timetry:input = raw_input
except:passclass JDlogin(object):def __init__(self,un,pw):self.headers = {'User-Agent':"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8','Accept-Encoding':'gzip, deflate, sdch','Accept-Language':'zh-CN,zh;q=0.8','Connection':'keep-alive',}self.session = requests.session()self.login_url = "http://passport.jd.com/uc/login"self.post_url = "http://passport.jd.com/uc/loginService"self.auth_url = "https://passport.jd.com/uc/showAuthCode"self.un = unself.pw = pwdef get_authcode(self,url):self.headers['Host'] = 'authcode.jd.com'self.headers['Referer'] = 'https://passport.jd.com/uc/login'response = self.session.get(url, headers = self.headers)with open('authcode.jpg','wb') as f:f.write(response.content)authcode = input("plz enter authcode:")return authcodedef get_info(self):'''获取登录相关参数'''try:page = self.session.get(self.login_url, headers = self.headers )soup = BeautifulSoup(page.text,"lxml")input_list = soup.select('.form input')data = {}data['uuid'] = input_list[0]['value']data['eid'] = input_list[4]['value']data['fp'] = input_list[5]['value']data['_t'] = input_list[6]['value']rstr = input_list[7]['name']data[rstr] = input_list[7]['value']acRequired = self.session.post(self.auth_url, data={'loginName':self.un}).text #返回({"verifycode":true})或({"verifycode":false})if 'true' in acRequired:print ('need authcode, plz find it and fill in ')acUrl = soup.select('.form img')[0]['src2']acUrl = 'http:{}&yys={}'.format(acUrl,str(int(time.time()*1000)))authcode = self.get_authcode(acUrl)data['authcode'] = authcodeelse:data['authcode'] = ''except Exception as e:print (e)finally:return datadef login(self):postdata = self.get_info()postdata['loginname'] = self.unpostdata['nloginpwd'] = self.pwpostdata['loginpwd'] = self.pwtry:self.headers['Host'] = 'passport.jd.com'self.headers['Origin'] = 'https://passport.jd.com'self.headers['X-Requested-With'] = 'XMLHttpRequest'login_page = self.session.post(self.post_url, data = postdata, headers = self.headers)print (login_page.text)  #若返回{“success”:”http://www.jd.com”}，说明登录成功except Exception as e:print (e)if __name__=="__main__":username = input("plz enter username:")password = input("plz enter password:")JD = JDlogin(username,password)JD.login()