python - 无法读取美丽汤的 html 页面

Question

以下代码在输出中打印 hi 后卡住了。您能检查一下这有什么问题吗？如果该网站是安全的并且我需要一些特殊的身份验证？

from bs4 import BeautifulSoup
import requests

print('hi')
rooturl='http://www.hoovers.com/company-information/company-search.html'
r=requests.get(rooturl);
print('hi1')
soup=BeautifulSoup(r.content,"html.parser");
print('hi2')
print(soup)

Answer 1

Unable to read html page from beautiful soup

为什么你遇到这个问题是网站认为你是机器人，他们不会向你发送任何东西。他们甚至会挂断连接让你永远等待。

You just imitate browser's request, then server will consider you are not an robot.

添加 header 是处理此问题的最简单方法。但你不应该只传递User-Agent(就像这次)。请记住复制浏览器的请求并通过测试删除无用的元素。如果你懒就直接使用浏览器的 headers，但上传文件时一定不要全部复制

from bs4 import BeautifulSoup
import requests

rooturl='http://www.hoovers.com/company-information/company-search.html'
with requests.Session() as se:
    se.headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
        "Accept-Encoding": "gzip, deflate",
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
        "Accept-Language": "en"
    }
    resp = se.get(rooturl)
print(resp.content)
soup = BeautifulSoup(resp.content,"html.parser")