asp.net – 将提交请求提交到aspx页面

使用Python的urllib和urllib2我使用正确的标头和用户代理创建了一个post请求.但是生成的html响应不包含预期的结果表.我误解了还是错过了任何明显的细节？

import urllib
    import urllib2

    headers = {
        'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.13)         Gecko/2009073022 Firefox/3.0.13','HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/xml; q=0.9,*/*; q=0.8','Content-Type': 'application/x-www-form-urlencoded'
    }
    # obtained these values from viewing the source of https://searchlight.cluen.com/E5/CandidateSearch.aspx
    viewstate = '/wEPDwULLTE3NTc4MzQwNDIPZBYCAg ... uJRWDs/6Ks1FECco='
    eventvalidation = '/wEWjQMC8pat6g4C77jgxg0CzoqI8wgC3uWinQQCwr/ ... oPKYVeb74='
    url = 'https://searchlight.cluen.com/E5/CandidateSearch.aspx'
    formData = (
        ('__VIEWSTATE',viewstate),('__EVENTVALIDATION',eventvalidation),('__EVENTTARGET',''),('__EVENTARGUMENT',('textcity',('dropdownlistposition',('dropdownlistdepartment',('dropdownlistorderby',('textsearch',)

    # change user agent
    from urllib import FancyURLopener
    class MyOpener(FancyURLopener):
        version = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.8.1.11) Gecko/20071127         Firefox/2.0.0.11'

    myopener = MyOpener()

    # encode form data in post-request format
    encodedFields = urllib.urlencode(formData)

    f = myopener.open(url,encodedFields)
    print f.info()

    try:
      fout = open('tmp.htm','w')
    except:
      print('Could not open output filen')

    fout.writelines(f.readlines())
    fout.close()

关于这个主题有几个问题是有帮助的(例如how to submit query to .aspx page in python),但是如果可能的话,我会坚持这个并要求额外的帮助.

生成的html页面说我可能需要登录,但aspx页面显示在我的浏览器中而没有任何登录.

以下是info()的结果：

Connection: close
Date: Tue,07 Jun 2011 17:05:26 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 1944