如何调试使用基本身份验证处理程序的 urllib2 请求

Question

我正在使用 urllib2 和 HTTPBasicAuthHandler 发出请求，如下所示：

import urllib2

theurl = 'http://someurl.com'
username = 'username'
password = 'password'

passman = urllib2.HTTPPasswordMgrWithDefaultRealm()
passman.add_password(None, theurl, username, password)

authhandler = urllib2.HTTPBasicAuthHandler(passman)
opener = urllib2.build_opener(authhandler)
urllib2.install_opener(opener)

params = "foo=bar"

response = urllib2.urlopen('http://someurl.com/somescript.cgi', params)

print response.info()

运行此代码时，我当前收到 httplib.BadStatusLine 异常。我该如何进行调试？有没有办法无论无法识别的 HTTP 状态代码如何都可以查看原始响应是什么？

Answer 1

您是否尝试过在自己的 HTTP 处理程序中设置调试级别？将代码更改为如下所示：

>>> import urllib2
>>> handler=urllib2.HTTPHandler(debuglevel=1)
>>> opener = urllib2.build_opener(handler)
>>> urllib2.install_opener(opener)
>>> resp=urllib2.urlopen('http://www.google.com').read()
send: 'GET / HTTP/1.1
      Accept-Encoding: identity
      Host: www.google.com
      Connection: close
      User-Agent: Python-urllib/2.7'
reply: 'HTTP/1.1 200 OK'
header: Date: Sat, 08 Oct 2011 17:25:52 GMT
header: Expires: -1
header: Cache-Control: private, max-age=0
header: Content-Type: text/html; charset=ISO-8859-1
... the remainder of the send / reply other than the data itself 

因此要添加的三行是：

handler=urllib2.HTTPHandler(debuglevel=1)
opener = urllib2.build_opener(handler)
urllib2.install_opener(opener)
... the rest of your urllib2 code...

这将在 stderr 上显示原始 HTTP 发送/回复周期。

根据评论进行编辑

这有效吗？

... same code as above this line
opener=urllib2.build_opener(authhandler, urllib2.HTTPHandler(debuglevel=1))
... rest of your code