利用Python实现自动登录

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-8
import time
from 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-8
import urllib.request
import 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=1
while 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-8
import threading #导入threading包
from time import sleep
import 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-8
import urllib.request
import 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：

http://splinter.readthedocs.org/en/latest/index.html

官方示例程序：

https://github.com/cobrateam/splinter