python登陆asp网站页面的实现代码

使用python来登录asp网站和登录其他网站差不多,只是因为asp页面在每次请求的时候都要带上viewstate,因此使用python来登录的话就多了一个步骤,获得这个页面的viewstate之后带上这个和你要post或get到该页面的请求数据就好了,下面这段程序是登录一个asp系统,然后搜索某些数据并将这些数据保存下来.

#coding=utf-8 
import urllib2 from bs4 import beautifulsoup import urllib import cookielib import re import httplib import time 
 
 
loginurl="登录地址"
headers={"user-agent":"mozilla/5.0 (windows nt 6.1) applewebkit/537.36 (khtml, like gecko) chrome/37.0.2062.120 safari/537.36"} 
studentcookie = cookielib.cookiejar()  
pageopener = urllib2.build_opener(urllib2.httpcookieprocessor(studentcookie)) 
loginpagerequest = urllib2.request(loginurl)  
loginpagehtml = pageopener.open(loginpagerequest).read() """ 
s=requests.session() 
s.headers.update(headers) 
r=s.get(loginurl) 
""" print loginpagehtml 
soup=beautifulsoup(loginpagehtml) 
 
__viewstate=soup.find(id="__viewstate")['value'] 
__eventvalidation=soup.find(id="__eventvalidation")['value'] 
 print __viewstate print __eventvalidation 
 
login_data={ 
   ' __eventtarget':'', '__eventargument':'', '__lastfocus':'', '__viewstate':__viewstate, '__eventvalidation':__eventvalidation, 'clienscreentheight':'768', 'textboxuserid':'username', 'textboxpwd':'password', 'drplanguage':'zh-cn', 'buttonconfirm.x':'45', 'buttonconfirm.y':'64'
   } 
loginheader = {  
           
          'user-agent':'sssssssssssssssssssssss' 
          } 
logindata=urllib.urlencode(login_data) 
loginrequest = urllib2.request(loginurl , logindata , headers) 
loginresponse = pageopener.open(loginrequest) 
 print loginresponse 
 
theurl='登录后搜索页面地址'
 
mainpagerequest = urllib2.request(theurl) 
 
mainpagehtml = pageopener.open(mainpagerequest).read()  
soup=beautifulsoup(mainpagehtml) 
 
__viewstate=soup.find(id="__viewstate")['value'] #__eventvalidation=soup.find(id="__eventvalidation")['value'] print __viewstate #print __eventvalidation 
searchdata={ 
      '__viewstate':__viewstate, 
      '__eventvalidation':'', 
      'txtcopno':'', 'txtcar_no_s':'', 'drpstatus':'', 'txthiddenoronline':'none', 'txtauto_id':'', 'drptype':'', 'drpbasetype':'', 'ddlisstatus':0, 'txticcard':'', 'txtbill_no':'', 'txtgdatetime1':'', 'txtgdatetime2':'', 'drpfromka':'', 'drptoka':'', 'btnsearch':'%e6%9f%a5+%e8%af%a2%28f%29'
} 
 
data2=urllib.urlencode(searchdata) 
 
 
  
 
searchdata=urllib.urlencode(searchdata) 
searcgrequest=urllib2.request(theurl , searchdata , headers) 
searchresponse=pageopener.open(searcgrequest) 
 print loginresponse print searchresponse 
 
searchhtml=searchresponse.read() 
 
 
filename= r'c:\users\dell\desktop\getlogin\file'+time.strftime('%d%h%m',time.localtime(time.time()))+'.html'
 file=open(filename,'w') file.write(searchhtml) file.close() 
 print 'end' #raw_input()

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