使用 urlopen 时出现 HTTP 406 Not Acceptable 客户端错误

Question

我正在使用urllib.request.urlopen查询 URL http://dblp.org/db/conf/lak/index。由于某种原因，我无法使用 Python 模块urllib 访问该站点，因为我收到以下 HTTP 状态代码错误：HTTPError：HTTP 错误 406：不可接受这是我用来发出此请求的代码：from urllib.request import urlopenfrom bs4 import BeautifulSoupurl = 'http://dblp.org/db'html = urlopen(url).read()soup = BeautifulSoup(html)print(soup.prettify())我不确定导致此错误的原因，我需要帮助来解决此错误。以下是与此错误相关的堆栈跟踪：HTTPError                                 Traceback (most recent call last)<ipython-input-5-b158a1e893a0> in <module>----> 1 html = urlopen("https://dblp.org/db").read()      2 #print(html)      3 soup = BeautifulSoup(html)      4 soup.prettify()~\Anaconda3\lib\urllib\request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context)    220     else:    221         opener = _opener--> 222     return opener.open(url, data, timeout)    223     224 def install_opener(opener):~\Anaconda3\lib\urllib\request.py in open(self, fullurl, data, timeout)    529         for processor in self.process_response.get(protocol, []):    530             meth = getattr(processor, meth_name)--> 531             response = meth(req, response)    532     533         return response~\Anaconda3\lib\urllib\request.py in http_response(self, request, response)    639         if not (200 <= code < 300):    640             response = self.parent.error(--> 641                 'http', request, response, code, msg, hdrs)    642     643         return response~\Anaconda3\lib\urllib\request.py in error(self, proto, *args)    567         if http_err:    568             args = (dict, 'default', 'http_error_default') + orig_args--> 569             return self._call_chain(*args)    570     571 # XXX probably also want an abstract factory that knows when it makes

Answer 1

我正在研究406 错误代码，当服务器无法使用请求中指定的接受标头进行响应时，就会发生这种情况。如果我能让urlopen正常工作，我也会发布这个答案。

使用Python 请求时我没有收到此错误

import requests

from bs4 import BeautifulSoup

user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Firefox/78.0'

raw_html = requests.get('http://dblp.org/db/conf/lak/index')

soup = BeautifulSoup(raw_html.content, 'html.parser')

print(soup.prettify())

下面的答案使用urlopen，它不会产生 406 错误。

from urllib.request import Request

from urllib.request import urlopen

from bs4 import BeautifulSoup

raw_request = Request('https://dblp.org/db/conf/lak/index')

raw_request.add_header('User-Agent', 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Firefox/78.0')

raw_request.add_header('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8')

resp = urlopen(raw_request)

raw_html = resp.read()

soup = BeautifulSoup(raw_html, 'html.parser')

print(soup.prettify())