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python实现自动登录

2020-02-15 22:59:24
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利用python,可以实现填充网页表单,从而自动登录WEB门户。

(注意:以下内容只针对python3)

环境准备:

(1)安装python
(2)安装splinter,下载源码 python setup install

#coding=utf-8import timefrom splinter import Browser def login_mail(url):  browser = Browser()  #login 163 email websize  browser.visit(url)  #wait web element loading  #fill in account and password  browser.find_by_id('username').fill('你的用户名称')  browser.find_by_id('password').fill('你的密码')  #click the button of login  browser.find_by_id('loginBtn').click()  time.sleep(5)  #close the window of brower  browser.quit() if __name__ == '__main__':  mail_addr ='http://reg.163.com/'  login_mail(mail_addr)

Tips:

(1)如果需要修改web的html属性,可以使用:js

browser.execute_script('document.getElementById("Html属性ID").value = "在此提供默认值"')

(2)browser = Browser()

不指定的情况下,浏览器驱动是火狐(Firefox),可以指定其他:browser = Browser(‘chrome'),需要下载对应的驱动程序

1.python3浏览页面

#coding=utf-8import urllib.requestimport time#在请求加上头信息,伪装成浏览器访问headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0'}chaper_url='http://XXX' vist_num=1while vist_num<1000: if vist_num%50==0:  time.sleep(5) print("This is the 【 "+str(vist_num)+" 】次尝试") req = urllib.request.Request(url=chaper_url, headers=headers)  urllib.request.urlopen(req).read() #.decode('utf-8') vist_num+=1

2.python 多线程

#coding=utf-8import threading #导入threading包from time import sleepimport time def fun1():   print ("Task 1 executed." )  time.sleep(3)  print ("Task 1 end." ) def fun2():  print ("Task 2 executed." )  time.sleep(5)  print ("Task 2 end." )  threads = [] t1 = threading.Thread(target=fun1) threads.append(t1)t2 = threading.Thread(target=fun2)threads.append(t2) for t in threads:  # t.setDaemon(True)   t.start() 

3.利用python下载百度图片

#coding=utf-8import urllib.requestimport re def getHtml(url):  page = urllib.request.urlopen(url)  html = page.read()  return html def getImg(html):  reg = r'src="(.+?/.jpg)"'  imgre = re.compile(reg)  html=html.decode('utf-8')  imglist = re.findall(imgre,html)  x = 0  for imgurl in imglist:    urllib.request.urlretrieve(imgurl,'%s.jpg' % x)    x+=1    print(str(x))html = getHtml("http://image.baidu.com/channel?c=%E6%91%84%E5%BD%B1&t=%E5%85%A8%E9%83%A8&s=0") print(getImg(html))

效果:

官网:链接地址

官方示例程序:链接地址

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持武林站长站。

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