本文实例讲述了python实现的登录与提交表单数据功能。分享给大家供大家参考，具体如下：

# !/usr/bin/env python# -*- coding: utf-8 -*-import urllib2import urllibimport cookielibimport jsonimport httplibimport reimport requestsimport osimport timeimport requests, requests.utils, pickletry: import cookielib # 兼容Python2except: import http.cookiejar as cookielibs=requests.session()print s.headersfrom requests.packages.urllib3.exceptions import InsecureRequestWarningrequests.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.textprint rprint 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 tokenheaders={ '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 sprint type(r)print rfilename = '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 codeprint 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.contentaa=s.cookiesprint '-------------------------------------'print aa

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