首先编写一个非常小的网站应用，该网站能实现注册，登录，拦截器（也就是用户在没有登录的情况，不能访问某些网页），可使用该例子：tornado_blog_practice，该网站的
http://localhost:/temp页面在用户没有登录的情况下，是不能够访问的。
模拟登录
首先运行该网站应用：python main.py
# -*- coding: utf-8 -*-
import requests
# 登录
def getTemp(username, password):
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 5.1; rv:33.0) Gecko/20100101 Firefox/33.0'}
session = requests.session()
# session.get("http://192.168.126.138", headers=headers)
postdata = {
"username": username,
"password": password
}
url = "http://192.168.126.138/login"
login = session.post(url, data=postdata, headers=headers)
web_page = session.get("http://192.168.126.138/temp")
print web_page.content
# 没有登录的情况
def beforeGet():
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 5.1; rv:33.0) Gecko/20100101 Firefox/33.0'}
session = requests.session()
# session.get("http://192.168.126.138", headers=headers)
web_page = session.get("http://192.168.126.138/temp", headers=headers)
print web_page.content
if __name__ == "__main__":
beforeGet()
print "---------------------"
username = "liyuling"
password = "li"
getTemp(username, password)
lee@bogon:tornado-test$ python spider.py <!doctype html> <html lang="en"> <head> <title>Login Page</title> </head> <body> <h2>If you want to login, please input your name and password.<h2> <form action="/login", method="post"> username: <input type="text", name="username"> password: <input type="password", name="password"> <input type="submit" value="Submit"> </form> </body> </html> --------------------- <!doctype html> <html lang="en"> <head> <title>temp</title> </head> <body> <h1>Temp page.</h1> </body> </html>