前言

内蒙古大学校园网系深澜软件的网页认证系统，每个账号最多同时有3台设备上网，由于种种原因认证网页时常无法打开，因此想到用脚本来模拟人工验证。

实现

python具有强大的第三方库既然要获取网页信息，必然选用requests这一强大的库，通过google chrome的F12中的network获取验证时向服务器发送的内容，配合requests轻松写出脚本。

代码

import requests
import time

def web_sent(user, pwd):
    # 校园网登入链接
    url_go = "http://172.31.99.50:804/srun_portal_pc.php?ac_id=2&"
    url_succeed = "http://172.31.99.50:804/srun_portal_pc_succeed.php"

    # 发送的数据
    user_data = {
        "action": "login",
        "username": user,
        "password": pwd,
        "ac_id": "2",
        # "save_me": "1",
        "ajax": "1"
    }

    # 向目标网站发送请求
    read = 0
    web_return = requests.post(url_go, data=user_data)
    while web_return.text == "Portal not response.":
        print(web_return.text, "\n网页无响应正在重新登入...")
        time.sleep(1) # 每隔1s请求一次，避免服务器拉黑。
        # web_return = requests.post(url_go, data=user_data)
        read += 1
        if read >= 7:
            print("服务器忙碌，请重启软件再试一次！！！")
            input("Press any key to continue . . .")
            return 11

    # 输出网页反馈结果
    if web_return.status_code == 200:
        if web_return.text[0:8] == "login_ok":
            print("登录成功！！！")
            # 获取ip和账户余额
            succeed = requests.post(url_succeed).text
            IP = succeed[succeed.rfind("IP地址：") + 76:succeed.rfind("已用流量：") - 59]
            Balance = succeed[succeed.rfind("帐户余额：") + 80:succeed.rfind("</span>")]
            while IP == '':
                succeed = requests.post(url_succeed).text
                IP = succeed[succeed.rfind("IP地址：") + 76:succeed.rfind("已用流量：") - 59]
                Balance = succeed[succeed.rfind("帐户余额：") + 80:succeed.rfind("</span>")]
            print("获取的IP为:", IP)
            print("账户余额：", Balance, "￥")
            input("Press any key to continue . . .")
        else:
            print(web_return.text[:web_return.text.rfind(".") + 1])
            input("Press any key to continue . . .")

def main():
    time.sleep(1)
    user = "0000000000"    # 此处为校园网账号    
    pwd = "000000"        # 此处为校园网密码 
    web_sent(user, pwd)

# 执行指令
main()