Python请求重定向登录 [英] Python requests login with redirection

问题描述

这是一个我要使用python登录的网站 http://pro.wialon.com/请求模块.登录和传递是演示.

Here is a site http://pro.wialon.com/ where I want to login with python requests module. Login and pass are demo.

import requests
with requests.Session()as c:
    url = 'http://pro.wialon.com/'
    payload = dict(user='demo',
                       passw='demo',
                       login_action='login')
    r = c.post(url, data=payload, allow_redirects=True)
    print(r.text)

坦率地说，我想获得报告(在报告"选项卡上)作为响应.但是我不知道如何登录.

Frankly, I want to get report (at the report tab) as response. But I cant figure out how to log in.

推荐答案

发布网址不正确，并且您缺少表单数据，还需要执行初始请求，发布到正确的网址，然后获取http://pro.wialon.com/service.html:

The post url is incorrect and you are missing form data, you need to also do an initial request, post to the correct url and then get http://pro.wialon.com/service.html:

data = {"user": "demo",
    "passw": "demo",
    "submit": "Enter",
    "lang": "en",
    "action": "login"}

 head = {"User-Agent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"}

with requests.Session() as c:
    c.get('http://pro.wialon.com/')
    url = 'http://pro.wialon.com/login_action.html'
    c.post(url, data=data, headers=head)
    print(c.get("http://pro.wialon.com/service.html").content)

您可以在网络标签下的chrome开发工具中查看该帖子:

You can see the post in chrome dev tools under the network tab:

发布或获取请求的默认设置是允许重定向，因此您无需在此处指定.

Also the default for post or get requests is to allow redirects so you don't need to specify it here.

您可以在登录页面源代码中看到表单操作:

You can see in the login page source, the form action:

<form class="login_bg_form" id="login_form" action="login_action.html" method="POST">

使用 bs4 :

import requests
from bs4 import BeautifulSoup
from urlparse import urljoin

data = {"user": "demo",
        "passw": "demo",
        "submit": "Enter",
        "lang": "en",
        "action": "login"}

head = {"User-Agent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"}

with requests.Session()as c:
    soup = BeautifulSoup(c.get('http://pro.wialon.com/').content)
    redir = soup.select_one("#login_form")["action"]
    url = 'http://pro.wialon.com/login_action.html'
    c.post(url, data=data, headers=head)
    print(c.get(urljoin("http://pro.wialon.com/", redir)).content)

现在唯一的问题是，大多数数据是使用ajax请求填充的，因此，如果要抓取数据，则需要模仿请求.

The only problem now is the data is mostly populated using ajax requests so if you want to scrape data you will need to mimic the requests.

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