Python 发出 HTTP POST 请求
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Making HTTP POST request
提问by infrared
I'm trying to make a POST request to retrieve information about a book. Here is the code that returns HTTP code: 302, Moved
我正在尝试发出 POST 请求以检索有关一本书的信息。这是返回 HTTP 代码的代码：302, Moved
import httplib, urllib
params = urllib.urlencode({
'isbn' : '9780131185838',
'catalogId' : '10001',
'schoolStoreId' : '15828',
'search' : 'Search'
})
headers = {"Content-type": "application/x-www-form-urlencoded",
"Accept": "text/plain"}
conn = httplib.HTTPConnection("bkstr.com:80")
conn.request("POST", "/webapp/wcs/stores/servlet/BuybackSearch",
params, headers)
response = conn.getresponse()
print response.status, response.reason
data = response.read()
conn.close()
When I try from a browser, from this page: http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackMaterialsView?langId=-1&catalogId=10001&storeId=10051&schoolStoreId=15828, it works. What am I missing in my code?
当我从浏览器尝试，从这个页面：http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackMaterialsView?langId=-1&catalogId=10001&storeId=10051&schoolStoreId=15828，它工作。我的代码中缺少什么？
EDIT: Here's what I get when I call print response.msg
编辑：这是我调用 print response.msg 时得到的结果
302 Moved Date: Tue, 07 Sep 2010 16:54:29 GMT
Vary: Host,Accept-Encoding,User-Agent
Location: http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackSearch
X-UA-Compatible: IE=EmulateIE7
Content-Length: 0
Content-Type: text/plain; charset=utf-8
Seems that the location points to the same url I'm trying to access in the first place?
似乎该位置指向我首先尝试访问的同一个网址？
EDIT2:
编辑2：
I've tried using urllib2 as suggested here. Here is the code:
我已经尝试按照此处的建议使用 urllib2。这是代码：
import urllib, urllib2
url = 'http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackSearch'
values = {'isbn' : '9780131185838',
'catalogId' : '10001',
'schoolStoreId' : '15828',
'search' : 'Search' }
data = urllib.urlencode(values)
req = urllib2.Request(url, data)
response = urllib2.urlopen(req)
print response.geturl()
print response.info()
the_page = response.read()
print the_page
And here is the output:
这是输出：
http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackSearch
Date: Tue, 07 Sep 2010 16:58:35 GMT
Pragma: No-cache
Cache-Control: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Set-Cookie: JSESSIONID=0001REjqgX2axkzlR6SvIJlgJkt:1311s25dm; Path=/
Vary: Accept-Encoding,User-Agent
X-UA-Compatible: IE=EmulateIE7
Content-Length: 0
Connection: close
Content-Type: text/html; charset=utf-8
Content-Language: en-US
Set-Cookie: TSde3575=225ec58bcb0fdddfad7332c2816f1f152224db2f71e1b0474c866f3b; Path=/
采纳答案by ars
Their server seems to want you to acquire the proper cookie. This works:
他们的服务器似乎希望您获取正确的 cookie。这有效：
import urllib, urllib2, cookielib
cookie_jar = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie_jar))
urllib2.install_opener(opener)
# acquire cookie
url_1 = 'http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackMaterialsView?langId=-1&catalogId=10001&storeId=10051&schoolStoreId=15828'
req = urllib2.Request(url_1)
rsp = urllib2.urlopen(req)
# do POST
url_2 = 'http://www.bkstr.com/webapp/wcs/stores/servlet/BuybackSearch'
values = dict(isbn='9780131185838', schoolStoreId='15828', catalogId='10001')
data = urllib.urlencode(values)
req = urllib2.Request(url_2, data)
rsp = urllib2.urlopen(req)
content = rsp.read()
# print result
import re
pat = re.compile('Title:.*')
print pat.search(content).group()
# OUTPUT: Title: Statics & Strength of Materials for Arch (w/CD)<br />
回答by loevborg
Perhaps that's what the browser gets, and you'll just have to follow the
302redirect.If all else fails, you can monitor the dialogue between Firefox and the Web Server using FireBug or tcpdump or wireshark, and see which HTTP headers are different. Possibly it's just the
User Agent:header.
也许这就是浏览器所得到的，您只需要遵循
302重定向即可。如果一切都失败了，您可以使用 FireBug 或 tcpdump 或 wireshark 监视 Firefox 和 Web 服务器之间的对话，并查看哪些 HTTP 标头不同。可能只是
User Agent:标题。
