selenium栗子之登陆网站并获取cookie

测试网站（航天云网）：

http://cas.casicloud.com/loginservice=http%3A%2F%2Fin.casicloud.com%2Floginc%3Fservice%3D%252Fsso%252Flogin.jsp%253Fredirect%253Dhttp%25253A%25252F%25252Fwww.casicloud.com%25252Floginc%25253Fret%25253Dhttp%2525253A%2525252F%2525252Fwww.casicloud.com%2525252F

界面如图：

首先关于验证码：

很庆幸的是，经过分析，该网站的验证码不用通过OCR识别，相对应的，验证码的值在JS加载后，一段<input type="hidden" id="randomString" value="”。。。。的值李，因此，我们只需要模拟登陆后，取出JS加载好的值之后，正则匹配或者XPATH就能得到该值。

接着，开始：

1、设置浏览器，登录网页：

url = ‘***’

driver = webdriver.Chrome()
driver.get(url)

2、个人建议设置一个时间间隔，便于JS的加载（我一般设置的3-5秒）。

driver.implicitly_wait(5)

3、在相对应的表格里填写账户密码

driver.find_element_by_xpath('//*[@id="shortAccount"]')
driver.find_element_by_xpath('//*[@id="shortAccount"]').send_keys('账户名')
driver.find_element_by_xpath('//*[@id="password"]')
driver.find_element_by_xpath('//*[@id="password"]').send_keys('密码')

4、通过JS加载后的页面获取验证码值：

html = driver.page_source
check_value = re.search(r'<input type="hidden" id="randomString" value="(\d\d\d\d)"',html).group(1)

5、填写验证码，登录网站并获取cookie：

key = str(check_value)

driver.find_element_by_xpath('//*[@id="code0"]')
driver.find_element_by_xpath('//*[@id="code0"]').send_keys(key)
driver.find_element_by_xpath('//*[@id="loginForm"]/div[6]/input').click()

driver.refresh()
cookies = driver.get_cookies()
ret = ''
for cookie in cookies:
cookie_name = cookie['name']
cookie_value = cookie['value']
ret = ret+cookie_name+'='+cookie_value+'; '
print ret
driver.quit()

上面的刷新页面（refresh）只是个人习惯。

然后代码整理一下，如下：

#coding:utf-8
import re
from selenium import  webdriver

def login_get_cookie(url):
    driver = webdriver.Chrome()
    driver.get(url)
    driver.implicitly_wait(5)
    driver.find_element_by_xpath('//*[@id="shortAccount"]')
    driver.find_element_by_xpath('//*[@id="shortAccount"]').send_keys('账户')
    driver.find_element_by_xpath('//*[@id="password"]')
    driver.find_element_by_xpath('//*[@id="password"]').send_keys('密码')
    html = driver.page_source
    check_value = re.search(r'<input type="hidden" id="randomString" value="(\d\d\d\d)"',html).group(1)
    key = str(check_value)
    driver.find_element_by_xpath('//*[@id="code0"]')
    driver.find_element_by_xpath('//*[@id="code0"]').send_keys(key)
    driver.find_element_by_xpath('//*[@id="loginForm"]/div[6]/input').click()
    driver.refresh()
    cookies = driver.get_cookies()
    ret = ''
    for cookie in cookies:
        cookie_name = cookie['name']
        cookie_value = cookie['value']
        ret = ret+cookie_name+'='+cookie_value+'; '
    print ret
    driver.quit()
    return ret
url = 'http://cas.casicloud.com/login?service=http%3A%2F%2Fin.casicloud.com%2Floginc%3Fservice%3D%252Fsso%252Flogin.jsp%253Fredirect%253Dhttp%25253A%25252F%25252Fwww.casicloud.com%25252Floginc%25253Fret%25253Dhttp%2525253A%2525252F%2525252Fwww.casicloud.com%2525252F'
cookies =  login_get_cookie(url)

selenium栗子之登陆网站并获取cookie

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