锐捷 有线 网页 拨号， 刷新频率1s （哈哈，有点丧心病狂）。这次使用配置文件输入密码，配置文件将在第一次运行时生成，并在第二次运行之后删除密码。

ruijieweb.py

# -*- coding: utf-8 -*-
import re
import urllib
import urllib2
import cookielib
import time
import getpass
import threading
from HTMLParser import HTMLParser
import ConfigParser

class RJLoginHTMLParser(HTMLParser):
    # 解析登录页面
    form = {}
    def handle_starttag(self, tag, attrs):
        if tag == "input":
            # print tag, attrs
            _attrs = filter(lambda x: x[0] == "name" or x[0] == "value", attrs)
            if _attrs[0][1] == 'tipinfoHidden' or \
               _attrs[0][1] == 'publishInfoHidden' or \
               _attrs[0][1] == 'publishTextInfoHidden' or \
               _attrs[0][1] == 'noticeOK':
                # 这些都是废话，！！！！！！！！！！！！！！！！！！！！
               return
            self.form[_attrs[0][1]] = _attrs[1][1]
    def handle_endtag(self, tag):
        pass
    def handle_data(self, data):
        pass

class RuijieWeb(object):
    REGEXLOGINURL = r"<script>self.location.href=\'(.*)\'\+\'(.*)\';</script>"
    REGEXLOGOUTMSG = r"<isonline>(.*)</isonline>"

    TESTURL = "http://www.baidu.com/"
    LOGINURL = "http://10.28.102.14/eportal/webgateuser.do?method=login_ajax_pure_internet"
    REFRESHURL = "http://10.28.102.14/eportal/webgateuser.do?method=refresh&userIndex=9a5552c4aceb923538eb4101cb9c553a_{userIp}_{username}"
    LOGOUTURL = "http://10.28.102.14/eportal/user.do?method=logout&rnd=0.8901102892123163"
    LOGINSUCCESSURL = "http://10.28.102.14/eportal/webgatemode/loginsuccess_pure_internet.jsp"
    
    INTERVAL = 1                # 跟服务器刷新频率
    RELOGINFLAG = True          # 被迫下线，重新拨号
    RUNNING = False             # 运行状态

    headers = {
        'Use-Agent':'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6',
    }
    cookie = cookielib.CookieJar()
    opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))

    def __init__(self, interval=1, re_login_flag=True, username=None, password=None):
        "init"
        self.INTERVAL = interval
        self.username = username
        self.password = password
        self.RELOGINFLAG = re_login_flag

    def start(self):
        # 开始启动服务
        (code, msg) = self.login()
        print msg
        if code:
            self.RUNNING = True
            self.flush()    # 保持在线
        else:
            self.RUNNING = False
            self.stop()
            
    def stop(self, *args):
        self.RUNNING = False
        (code, msg) = self.logout()
        if code:                # 计算秒数
            print msg, 's'
        else:
            print msg
        exit(1)

    def login(self):
        print 'login...'
        headers = self.headers
        opener = self.opener
    
        # 使用百度，获取登录页面
        try:
            req1 = urllib2.Request(url=self.TESTURL, headers=headers)
            resp1 = opener.open(req1)
            loginurl = resp1.geturl()
        except urllib2.URLError, e:
            print e
            return (False, str(e))
        else:
            # print loginurl, self.TESTURL
            if loginurl == self.TESTURL:
                mesg = 'You have logined\nApplication exit.'
                return (False, mesg)
            else:
                page = resp1.read()
                loginurl = re.match(self.REGEXLOGINURL, page, re.I)
                loginurl = ''.join(loginurl.groups())
        
        # 在登录页面上获取一些新信息（这里还未登录）
        try:
            req2 = urllib2.Request(url=loginurl, headers=headers)
            resp2 = opener.open(req2).read()
        except Exception, e:
            print e
            return (False, str(e))
        else:
            parse = RJLoginHTMLParser()
            parse.feed(resp2.decode('utf-8'))
            form = parse.form
            form["username"] = form["usernameHidden"] = self.username
            form["pwd"] = self.password

            # 这里设置刷新链接URL
            self.REFRESHURL.format(userIp=form["userIp"], username=form["username"])
        
            # 包装数据
            postdata = urllib.urlencode(form)

        # 这里发送用户信息去登录
        try:
            req3 = urllib2.Request(url=self.LOGINURL, headers=headers, data=postdata)
            resp3 = opener.open(req3)
        except Exception, e:
            return (False, str(e))
        else:
            # print resp3.geturl()
            if resp3.geturl() == self.LOGINSUCCESSURL:
                return (True, 'login successfully!')
            else:
                return (False, 'login failed! You maybe input wrong password.') 
    def logout(self):
        print 'logout...'
        # 下线
        try:
            req = urllib2.Request(url=self.LOGOUTURL, headers=self.headers)
            resp = self.opener.open(req).read()
        except Exception, e:
            print e
            return(False, str(e))
        else:
            return(True, resp)      # resp中有上网的秒数

    def flush(self):
        # 定时刷新
        # print 'flush...'
        try:
            req = urllib2.Request(url=self.REFRESHURL, headers=self.headers)
            resp = self.opener.open(req)
            page = resp.read()
        except Exception, e:
            print e
            self.stop()
        else:
            rlt = re.findall(self.REGEXLOGOUTMSG, page, re.I)
            t = threading.Timer(self.INTERVAL, self.flush, ())
            if rlt and rlt[0] == "false":
                print '>>> Your account has logined another place.'
                if self.RELOGINFLAG:
                    print '>>> Start again...'
                    self.start()
                else:
                    self.stop()
            elif self.RUNNING: # 没有被迫下线，并且还处于运行状态
                t.start()

if __name__ == '__main__':
    
    cfg = ConfigParser.ConfigParser()
    cfg.read("ruijieweb.ini")

    try:
        username = cfg.get("account", "username")
        password = cfg.get("account", "password")
        interval = cfg.getint("system", "interval")
        re_login_flag = cfg.get("system", "re_login_flag")
    except ConfigParser.NoSectionError, e:
        with open('ruijieweb.ini', 'w') as f:
            f.write('''[account]\nusername = \npassword = \n\n[system]\ninterval = 1 \t\t;刷新频率\nre_login_flag=True \t\t;被迫下线是否重新连接''')
        print '>>> Please input informaiton in ruijieweb.ini and run again.'
        exit(1)

    if username and password:
        print username
        # 清除用户信息
        cfg.set("account", "username", "")
        cfg.set("account", "password", "")
        cfg.write(open('ruijieweb.ini', 'wb'))
        print ">>> Clear your username and password."
    else:
        print '>>> Please input username and password in ruijieweb.ini.'
        exit(1)

    rjw = RuijieWeb(username=username, password=password, interval=interval, re_login_flag=re_login_flag)
    rjw.start()

    while True:
        print "\nIf you want to EXIT, you can Ctrl+c or input exit/quit/q.\n"
        t = raw_input(">>> ")
        if t.lower() in ['exit', 'quit', 'q']:
            rjw.stop()