Facebook 流 API 错误在浏览器中有效，但在服务器端无效
如果我在浏览器中输入此 URL，它会返回我有兴趣抓取的有效 XML 数据。
http://www.facebook.com/ajax/stream/profile.php?__a=1&profile_id=36343869811&filter=2&max_time=0&try_scroll_load=false&_log_clicktype=Filter%20Stories%20or%20Pagination&ajax_log=0
但是，如果我从服务器端执行此操作，则它不会像以前那样工作。现在它只是返回此错误，这似乎是默认错误消息
{u'silentError': 0, u'errorDescription': u"Something went wrong. We're working on getting it fixed as soon as we can.", u'errorSummary': u'Oops', u'errorIsWarning': False, u'error': 1357010, u'payload': None}
，这里是有问题的代码，我尝试了多个用户代理，但无济于事：
import urllib2
user_agent = 'Mozilla/5.0 (Windows; U; Windows NT 6.1; he; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3'
uaheader = { 'User-Agent' : user_agent }
wallurl='http://www.facebook.com/ajax/stream/profile.php?__a=1&profile_id=36343869811&filter=2&max_time=0&try_scroll_load=false&_log_clicktype=Filter%20Stories%20or%20Pagination&ajax_log=0'
req = urllib2.Request(wallurl, headers=uaheader)
resp = urllib2.urlopen(req)
pageData=convertTextToUnicode(resp.read())
print pageData #and get that error
除了用户之外，服务器调用和我自己的浏览器之间有什么区别代理和IP地址？
If I enter this URL in a browser it returns to me the valid XML data that I am interested in scraping.
http://www.facebook.com/ajax/stream/profile.php?__a=1&profile_id=36343869811&filter=2&max_time=0&try_scroll_load=false&_log_clicktype=Filter%20Stories%20or%20Pagination&ajax_log=0
However, if I do it from the server-side, it doesn't work as it previously did. Now it just returns this error, which seems to be the default error message
{u'silentError': 0, u'errorDescription': u"Something went wrong. We're working on getting it fixed as soon as we can.", u'errorSummary': u'Oops', u'errorIsWarning': False, u'error': 1357010, u'payload': None}
here is the code in question, I've tried multiple User Agents, to no avail:
import urllib2
user_agent = 'Mozilla/5.0 (Windows; U; Windows NT 6.1; he; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3'
uaheader = { 'User-Agent' : user_agent }
wallurl='http://www.facebook.com/ajax/stream/profile.php?__a=1&profile_id=36343869811&filter=2&max_time=0&try_scroll_load=false&_log_clicktype=Filter%20Stories%20or%20Pagination&ajax_log=0'
req = urllib2.Request(wallurl, headers=uaheader)
resp = urllib2.urlopen(req)
pageData=convertTextToUnicode(resp.read())
print pageData #and get that error
What would be the difference between the server calls and my own browser aside from User Agents and IP addresses?
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我在 chrome 和 firefox 中都尝试了上面的网址。它可以在 Chrome 上运行，但在 Firefox 上失败。在 Chrome 上，我登录了 Facebook，而在 Firefox 上，我没有登录。
这可能是造成这种差异的原因。您需要在您发布的基于 urllib2 的脚本中提供身份验证。
有一个现有问题使用 urllib2 进行身份验证。
I tried the above url in both chrome and firefox. It works on chrome but fails on firefox. On chrome, I am signed into facebook while on Firefox, I am not.
This could be the reason for this discrepancy. You will need to provide authentication in your urllib2 based script that you have posted.
There is a existing question on authentication with urllib2.