urllib2.urlopen 引发 urllib2.URLError

Question

我正在做一个简单的工作来获得“http://search.jd.com/Search?keyword=%E5%A5%87%E7%9F%B3&enc=utf-8”的页面

所以我的python代码是：

# -*- coding: utf-8 -*-
import sys, codecs
import urllib, urllib2

url = "http://search.jd.com/Search?keyword=%E5%A5%87%E7%9F%B3&enc=utf-8"
print url

page=urllib2.urlopen(url).read()
print page

不管怎样

Traceback (most recent call last):
  File "tmp.py", line 15, in <module>
    page=urllib2.urlopen(url).read()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 127, in urlopen
    return _opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 404, in open
    response = self._open(req, data)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 422, in _open
    '_open', req)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 382, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1214, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1184, in do_open
    raise URLError(err)
urllib2.URLError: <urlopen error [Errno 8] nodename nor servname provided, or not known>

谁能告诉我这是怎么回事？

非常感谢！

Answer 1

听起来可能是网络问题。检查您是否具有一致的 Internet 连接（例如，在运行测试时不断 ping 适当的服务器）。只需运行您发布的代码，对我来说效果很好。

Answer 2

你的代码也适合我。

但如果 url 有一些字符，如“+=#”，则可能会发生错误，然后需要

s = "http://search.jd.com/Search?keyword=%E5%A5%87%E7%9F%B3&enc=utf-8"
my_url = urllib2.quote(s.encode("utf8"))
page=urllib2.urlopen(my_url).read()
print page

或者，您可以使用请求。

response =requests.post(url)
print response.content 

或

print response.text

Answer 3

这是网络问题，请确保您的互联网连接正常。