需求

这几天要去出差，电脑在宿舍只要用了25G流量，无论是否还剩流量，都会被强制下线需要重新登录，所以需要检查能否联网然后登陆

而且最近selenium库有了一些大更新，最主要的就是查找网页元素的函数进行了修改，导致之前的程序都会报错，顺便做下之前文章的更新内容

但是夸奖一下校园网，他终于不是在url发get请求来登录了，进行了md5加密，导致我没法简单发requests请求来登录了

selenium库更新

曾经查找元素的命令(以xpath查找为例)

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from selenium import webdriver

driver.find_element_by_xpath('//*[@id="kw"]').send_keys('this is a test')

如今无论查找方式都是用一个函数，查找方式变成了第一个参数

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from selenium import webdriver
from selenium.webdriver.common.by import By

driver.find_element(By.XPATH, "/html/body/main/section/div[1]/div[2]/input")

其他倒是都是一些小问题

自动登录程序

毕竟是校园网，我猜网页xpath短时间内都不会有变化hhh

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from selenium import webdriver
from selenium.webdriver.common.by import By
import time
import requests

username = "123456"
password = "654321"

while True:
    print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime()))
    try:
        requests.get(url='https://baidu.com/')
        print("Connected to the internet")
    except:
        try:
            print("Not connected to the internet, try to log in...")
            driver = webdriver.Edge()
            driver.minimize_window()
            driver.get("http://login.cumtb.edu.cn/")
            driver.find_element(By.XPATH, "/html/body/main/section/div[1]/div[2]/input").send_keys(username)
            driver.find_element(By.XPATH, "/html/body/main/section/div[1]/div[3]/input").send_keys(password)
            driver.find_element(By.XPATH, "/html/body/main/section/div[1]/div[5]/button").click()
            time.sleep(3)
            print('remain_flow：'+driver.find_element(By.XPATH, "/html/body/main/section/div[1]/div[5]/span[2]").text)
            driver.quit()
        except:
            print('Failed to log in.')
    time.sleep(60)