Python - urllib2 & cookielib

Question

我试图打开以下网站，检索初始cookie，并将其用于第二个url-open，但如果您运行以下代码，它将输出2个不同的cookie。如何使用第二个url-open的初始cookie？

import cookielib, urllib2

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

home = opener.open('https://www.idcourts.us/repository/start.do')
print cj

search = opener.open('https://www.idcourts.us/repository/partySearch.do')
print cj

每次输出都会显示2个不同的cookie，如您所见：

<cookielib.CookieJar[<Cookie JSESSIONID=0DEEE8331DE7D0DFDC22E860E065085F for www.idcourts.us/repository>]>
<cookielib.CookieJar[<Cookie JSESSIONID=E01C2BE8323632A32DA467F8A9B22A51 for www.idcourts.us/repository>]>

Answer 1

这不是urllib的问题。这个网站做了一些时髦的事情。你需要为它请求几个样式表来验证你的会话id：

import cookielib, urllib2

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
# default User-Agent ('Python-urllib/2.6') will *not* work
opener.addheaders = [
    ('User-Agent', 'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11'),
    ]


stylesheets = [
    'https://www.idcourts.us/repository/css/id_style.css',
    'https://www.idcourts.us/repository/css/id_print.css',
]

home = opener.open('https://www.idcourts.us/repository/start.do')
print cj
sessid = cj._cookies['www.idcourts.us']['/repository']['JSESSIONID'].value
# Note the +=
opener.addheaders += [
    ('Referer', 'https://www.idcourts.us/repository/start.do'),
    ]
for st in stylesheets:
    # da trick
    opener.open(st+';jsessionid='+sessid)
search = opener.open('https://www.idcourts.us/repository/partySearch.do')
print cj
# perhaps need to keep updating the referer...

Answer 2

不是一个实际的答案(但对于评论来说太长了)；可能对其他试图回答这个问题的人有用。

尽管我尽了最大的努力，我还是想不通。

在Firebug中，对于Firefox，cookie似乎保持不变(工作正常)。

我添加了urllib2.HTTPSHandler(debuglevel=1)来调试Python发送的头文件，它似乎确实重新发送了cookie。

我还添加了所有的Firefox请求头，看看这是否有帮助(它没有)：

opener.addheaders = [
    ('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13'),
    ..
]

我的测试代码：

import cookielib, urllib2

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj), urllib2.HTTPSHandler(debuglevel=1))
opener.addheaders = [
    ('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13'),
    ('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'),
    ('Accept-Language', 'en-gb,en;q=0.5'),
    ('Accept-Encoding', 'gzip,deflate'),
    ('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7'),
    ('Keep-Alive', '115'),
    ('Connection', 'keep-alive'),
    ('Cache-Control', 'max-age=0'),
    ('Referer', 'https://www.idcourts.us/repository/partySearch.do'),
]

home = opener.open('https://www.idcourts.us/repository/start.do')
print cj

search = opener.open('https://www.idcourts.us/repository/partySearch.do')
print cj

我觉得我漏掉了一些明显的东西。

Answer 3

我认为，这是服务器的问题，它为每个请求设置一个新的cookie。