POST 请求这样构建对不对？为啥总不成功

import requests
import json

url='http://www.spprec.com/sczw/jyfwpt/005001/005001001/MoreInfo.aspx?CategoryNum=005001001'
s = requests.session()

postdata={'__EVENTTARGET': 'MoreInfoList1$Pager', '__EVENTARGUMENT': '3', '__VIEWSTATE': 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', '__CSRFTOKEN': '/wEFJGJlODIyZDM0LTJmODgtNGQwMS1hNGQxLTJhMzdiZTViZThiMg=='}

headers={'Accept-Encoding': 'gzip, deflate', 'Referer': 'http://www.spprec.com/sczw/jyfwpt/005001/005001001/MoreInfo.aspx?CategoryNum=005001001', 'Accept-Language': 'zh-CN,zh;q=0.8', 'Content-Type': 'application/x-www-form-urlencoded', 'Origin': 'http://www.spprec.com', 'Connection': 'keep-alive', 'Host': 'www.spprec.com', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36'}
r=requests.get(url)

resp = s.post(url,headers=headers,cookies=r.cookies)

bel

yws

qch

oub

49 条回复 • 2016-03-13 09:56:31 +08:00

dsp2138

2016-03-12 18:37:49 +08:00

具体 postdata 为啥那么长，我也很纳闷我是不是搞错了！
但这个网站竟然将网页全文做为一个变量用 js submit 传送了！！

大虾帮忙分析下，这个 URL 的 post 我这样做对不对！

hansnow

2016-03-12 18:42:08 +08:00

resp = s.post(url,headers=headers,cookies=r.cookies)

data 去哪儿了？

trotyl

2016-03-12 18:43:37 +08:00

你的 postdata 根本就没用过。。不懂你是要干什么。。

dsp2138

2016-03-12 18:45:36 +08:00

@hansnow esp = s.post(url,data=posdate,theaders=headers,cookies=r.cookies)
抱歉，刚修改了，直接复制了！
这样也不行的

dsp2138

2016-03-12 18:46:15 +08:00

@trotyl 源码复制时错了，抱歉
resp = s.post(url,data=posdate,theaders=headers,cookies=r.cookies)

crab

2016-03-12 18:47:52 +08:00

__VIEWSTATE 这个参数值是动态的吧？

dsp2138

2016-03-12 18:50:03 +08:00

@crab 这个我 base64 解码看了下，就是当前页的全文的 html 代码！
具体为啥这么做很是不理解！

Strikeactor

2016-03-12 18:50:44 +08:00

http://requestb.in/
在线调试

dsp2138

2016-03-12 18:52:35 +08:00

@Strikeactor 我试试看

xuzywozz

2016-03-12 18:55:01 +08:00

heasers 不全？

dsp2138

2016-03-12 18:56:13 +08:00

@xuzywozz 我应该把 get 得到的 headers 都添加上吗？

bdbai

2016-03-12 21:23:19 +08:00 via iPhone

这一大串是 ASP.NET WebForm 生成的。你可以直接访问页面得到那串东西，然后模拟浏览器请求 POST 这样也许会好一点。

xuzywozz

2016-03-12 21:34:46 +08:00

@dsp2138 全加上试试我遇到几次问题都是 headers 不全造成的

dsp2138

2016-03-12 21:47:47 +08:00

@bdbai 我大概也看明白了， cookies 里面的__CSRFCOOKIE ，和 data 里面的__CSRFTOKEN 是保持一致的！
只是__CSRFTOKEN 的 value 使用了 base64 加密，但又不完全是！__CSRFCOOKIE 的 base64 码和__CSRFTOKEN 不一致！正在琢磨呢

mhycy

2016-03-12 22:03:42 +08:00

能不能说说在干啥？发了那么多次代码没次对的。。。。囧

dsp2138

2016-03-12 22:05:25 +08:00

@mhycy resp = s.post(url,data=data,cookies=cookies,headers=headers)

mhycy

2016-03-12 22:09:30 +08:00

@dsp2138 要干啥？

rcmerci

2016-03-12 22:15:14 +08:00

卧槽点进来吓尿了

just1

2016-03-12 22:15:38 +08:00 via Android

header 有的参数是不能加的

dsp2138

2016-03-12 22:20:07 +08:00

@just1 请教，哪些是不能加的？本人对这方面学习甚少！
谢谢

just1

2016-03-12 22:34:47 +08:00 via Android

@dsp2138 我也忘了，，，一个个测试吧。具体的情况就是 python 命令行下一个请求一直无反应(ctrl+c)也没用

mhycy

2016-03-12 22:47:42 +08:00

http://gist.github.com/anonymous/e837f2f5d9c6c57d7db8

bdbai

2016-03-12 22:48:20 +08:00

这是我写的一个实现：
https://gist.github.com/bdbai/cfd44c612ca154a62092

新手上路，请各位轻喷。

mhycy

2016-03-12 22:49:41 +08:00

https://gist.github.com/anonymous/e837f2f5d9c6c57d7db8
貌似是 https 才能正常加载。。囧

awanabe

2016-03-12 22:59:35 +08:00

你给的是 dict ，要用 json dump 一下吧

Comdex

2016-03-12 23:06:40 +08:00

楼主在搞模拟登录正方教务系统？

dsp2138

2016-03-12 23:23:46 +08:00

/wEFJGY5NjIzYzdkLTI3OGQtNDliYy04YzJiLTNmMjZkODdlMTI1Yw==
和
f9623c7d-278d-49bc-8c2b-3f26d87e125c
是 base64 加密和解密的关系，但 /wEFJGY5NjIzYzdkLTI3OGQtNDliYy04YzJiLTNmMjZkODdlMTI1Yw==解密后开始的几个字符，怎么处理？
这个怎么用 base64 加密和还原？

mhycy

2016-03-12 23:25:34 +08:00

@dsp2138 话说，你不是要抓页面么？

dsp2138

2016-03-12 23:42:14 +08:00

@mhycy 是，需要取得下一页的内容

mhycy

2016-03-12 23:43:27 +08:00

@dsp2138 已经给你写出来了

bdbai

2016-03-12 23:49:38 +08:00 via iPhone

@dsp2138 网页里面有个分页组件，用正则匹配一下就能读到分页数据了。上面给你写了一个直接读分页页面的。

dsp2138

2016-03-12 23:53:13 +08:00

@bdbai 谢谢， github 我这里没 vpn ，无法访问！

dsp2138

2016-03-12 23:54:49 +08:00

@mhycy 谢谢了，源码能放到国内吗， github 实在访问不了

mhycy

2016-03-12 23:55:27 +08:00

@dsp2138
看不到就不能留个言么。。囧

#coding=utf-8
import json
import requests
import re

class spprec(object):
def __init__(self, url):
self.session = requests.session()
self.session.headers.update({
'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36'
})
self.url = url
self.post_data = {}

def getInfo(self, num):
if len(self.post_data) == 0:
res = self.session.get(self.url)
else:
self.post_data['__EVENTARGUMENT'] = num
self.post_data["__EVENTTARGET"] = "MoreInfoList1$Pager"
res = self.session.post(url=self.url, data=self.post_data)

result = re.findall('<input type="hidden" name="([^"]+)" id="([^"]+)" value="([^"]+)" />', res.text, re.S)
post_data = {}
for item in result:
post_data.update({item[0]: item[2]})
self.post_data = post_data

result = re.findall('<a href="(/sczw/InfoDetail/Default.aspx[^"]+)" target="_blank" title="([^"]+)"', res.text, re.S)
return result

obj = spprec("http://www.spprec.com/sczw/jyfwpt/005001/005001001/MoreInfo.aspx?CategoryNum=005001001")
for i in xrange(1, 5):
data = obj.getInfo(i)
for item in data:
print item[1]

mhycy

2016-03-13 00:01:41 +08:00

#coding=utf-8
import json
import requests
import re

class spprec(object):
\tdef __init__(self, url):
\t\tself.session = requests.session()
\t\tself.session.headers.update({
\t\t\t'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36'
\t\t})
\t\tself.url = url
\t\tself.post_data = {}

\tdef getInfo(self, num):
\t\tif len(self.post_data) == 0:
\t\t\tres = self.session.get(self.url)
\t\telse:
\t\t\tself.post_data['__EVENTARGUMENT'] = num
\t\t\tself.post_data["__EVENTTARGET"] = "MoreInfoList1$Pager"
\t\t\tres = self.session.post(url=self.url, data=self.post_data)

\t\tresult = re.findall('<input type="hidden" name="([^"]+)" id="([^"]+)" value="([^"]+)" />', res.text, re.S)
\t\tpost_data = {}
\t\tfor item in result:
\t\t\tpost_data.update({item[0]: item[2]})
\t\tself.post_data = post_data

\t\tresult = re.findall('<a href="(/sczw/InfoDetail/Default.aspx[^"]+)" target="_blank" title="([^"]+)"', res.text, re.S)
\t\treturn result

obj = spprec("http://www.spprec.com/sczw/jyfwpt/005001/005001001/MoreInfo.aspx?CategoryNum=005001001")
for i in xrange(1, 5):
\tdata = obj.getInfo(i)
\tfor item in data:
\t\tprint item[1]

缩进全没了，请自行替换吧，\t 对应 4 个空格或者一个 tab

dsp2138

2016-03-13 00:07:16 +08:00

@mhycy 谢谢，我试试看

dsp2138

2016-03-13 00:25:13 +08:00

@mhycy 成功了！
谢谢你！
能简单说下原理吗？
谢谢老师

bdbai

2016-03-13 00:25:36 +08:00 via iPhone

@dsp2138 http://paste.ubuntu.com/15360404/ 这家没被墙

mhycy

2016-03-13 00:29:33 +08:00

@dsp2138 不管是我的还是 @bdbai 的都是抓出那个数据重新提交上去而已。。
我的那段代码比较直白 @bdbai 那段代码比较简洁

这个写法是很多 asp/.net 站点都有的，具体是什么原理没写过 asp/.net 并不了解
事实上只要看看源代码抓一次请求就知道怎么发了

bdbai

2016-03-13 00:36:05 +08:00 via iPhone

@mhycy ASP.NET WebForm 的理念就是把网页当成 WinForm 那样的窗体对待，服务端开发能轻松不少，但缺点很明显，每次触发事件都会把整个网页状态都上传、下载一遍。现代一点的网站都不会用它。

dsp2138

2016-03-13 00:37:08 +08:00

@mhycy post 中__VIEWSTATE 和__CSRFTOKEN 不用管吗?后台没有对这里个 input 进行验证？

我提交的过程基本和你一致，但总是获取到的都是第一页

谢谢，在仔细看看你的源码

dsp2138

2016-03-13 00:37:54 +08:00

@bdbai 谢谢

mhycy

2016-03-13 00:43:14 +08:00

@bdbai 看上去这个 POST 像是页面验证的一部分。。
@dsp2138 生成的 POST_DATA 就是这两个参数的数据，用正则表达式提取出来的。
仔细看看代码吧，我这个已经写得比较直白了。

bdbai

2016-03-13 00:48:53 +08:00 via iPhone

@mhycy 嗯有 CSRF 处理。 ViewState 是给服务器还原"窗体"的，不传好像也没问题。

dsp2138

2016-03-13 00:50:58 +08:00

@bdbai @mhycy

我也成功了！
发现自己还是对 requests 模块中的 session 不理解！！
发送的 cookies 有问题！

@bdbai 这类的网站国内省级站又近十家都是同一家公司做的！因此界面报告导航分页的代码都是一致！

-------------------------------
我自己的代码

----------------
import requests
import json
from bs4 import BeautifulSoup

url='http://www.spprec.com/sczw/jyfwpt/005001/005001001/MoreInfo.aspx?CategoryNum=005001001'
s = requests.session()
s.headers.update({ 'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36' })
r=s.get(url)
soup=BeautifulSoup(r.text,'html5lib')
__CSRFTOKEN=soup.find('input',id='__CSRFTOKEN').attrs['value']
__VIEWSTATE=soup.find('input',id='__VIEWSTATE').attrs['value']
__EVENTTARGET='MoreInfoList1$Pager'
__EVENTARGUMENT=4
postdata={'__EVENTTARGET':__EVENTTARGET,'__EVENTARGUMENT':__EVENTARGUMENT,'__CSRFTOKEN':__CSRFTOKEN,'__VIEWSTATE':__VIEWSTATE}
resp=s.post(url,postdata)

bdbai

2016-03-13 00:55:49 +08:00 via iPhone

@dsp2138 Session 会帮你处理好 Cookie 的问题。

HanSonJ

2016-03-13 01:07:49 +08:00

@Comdex 哈哈我看到这么长一串也是第一时间想起方正

dsp2138

2016-03-13 09:52:50 +08:00

谢谢各位老师的及时回复

shyling

2016-03-13 09:56:31 +08:00 via iPad

viewstate 这么长是很正常的