3回答

lzy2013good

2017-07-07

请问倒立的验证码，输入规则是什么？

0

0

xiao武

2017-06-17

参考这个：我已经成功登录了

0

8

id神马太难了

回复

xiao武

请问你是如何实现的 我这不太会

2017-07-12

共8条回复

xiao武

2017-06-17

# -*- coding: utf-8 -*-
'''
Required
- requests (必须)
- pillow (可选)
'''

import requests
try:
    import cookielib
except:
    import http.cookiejar as cookielib
import re
import time
import os.path
try:
    from PIL import Image
except:
    pass


# 构造 Request headers
agent = 'Mozilla/5.0 (Windows NT 5.1; rv:33.0) Gecko/20100101 Firefox/33.0'
headers = {
    "Host": "www.zhihu.com",
    "Referer": "https://www.zhihu.com/",
    'User-Agent': agent
}

# 使用登录cookie信息
session = requests.session()
session.cookies = cookielib.LWPCookieJar(filename='zhihu_cookie.txt')
try:
    session.cookies.load(ignore_discard=True)
except:
    print("Cookie 未能加载")


def get_xsrf():
    '''_xsrf 是一个动态变化的参数'''
    index_url = 'https://www.zhihu.com'
    # 获取登录时需要用到的_xsrf
    index_page = session.get(index_url, headers=headers)
    html = index_page.text
    pattern = r'name="_xsrf" value="(.*?)"'
    # 这里的_xsrf 返回的是一个list
    _xsrf = re.findall(pattern, html)
    return _xsrf[0]


# 获取验证码
def get_captcha():
    t = str(int(time.time() * 1000))
    captcha_url = 'https://www.zhihu.com/captcha.gif?r=' + t + "&type=login"
    r = session.get(captcha_url, headers=headers)
    with open('captcha.jpg', 'wb') as f:
        f.write(r.content)
        f.close()
    # 用pillow 的 Image 显示验证码
    # 如果没有安装 pillow 到源代码所在的目录去找到验证码然后手动输入
    try:
        im = Image.open('captcha.jpg')
        im.show()
        im.close()
    except:
        print(u'请到 %s 目录找到captcha.jpg 手动输入' % os.path.abspath('captcha.jpg'))
    captcha = input("please input the captcha\n>")
    return captcha


def isLogin():
    # 通过查看用户个人信息来判断是否已经登录
    url = "https://www.zhihu.com/settings/profile"
    login_code = session.get(url, headers=headers, allow_redirects=False).status_code
    if login_code == 200:
        return True
    else:
        return False


def login(secret, account):
    # 通过输入的用户名判断是否是手机号
    if re.match(r"^1\d{10}$", account):
        print("手机号登录 \n")
        post_url = 'https://www.zhihu.com/login/phone_num'
        postdata = {
            '_xsrf': get_xsrf(),
            'password': secret,
            'remember_me': 'true',
            'phone_num': account,
            "captcha": ""
        }
    else:
        if "@" in account:
            print("邮箱登录 \n")
        else:
            print("你的账号输入有问题，请重新登录")
            return 0
        post_url = 'https://www.zhihu.com/login/email'
        postdata = {
            '_xsrf': get_xsrf(),
            'password': secret,
            'remember_me': 'true',
            'email': account,
            "captcha": ""
        }
    # try:
    #     # 不需要验证码直接登录成功
    #     login_page = session.post(post_url, data=postdata, headers=headers)
    #     login_code = login_page.text
    #     print(login_page.status_code)
    #     print(login_code)
    # except:
        # 需要输入验证码后才能登录成功
    postdata["captcha"] = get_captcha()
    login_page = session.post(post_url, data=postdata, headers=headers)
    login_code = eval(login_page.text)
    print(login_code['msg'])
    session.cookies.save("zhihu_cookie.txt")

try:
    input = raw_input
except:
    input = input

if __name__ == '__main__':
    if isLogin():
        print('您已经登录')
    else:
        account = input('请输入你的用户名\n>  ')
        secret = input("请输入你的密码\n>  ")

login(secret, account)
response = session.get("https://www.zhihu.com/", headers=headers)
with open('second_page.html', 'wb') as f:
    f.write(response.text.encode("utf-8"))
print('done')

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