urllib帖子请求不起作用

Question

我正在尝试使用 urllib 库编写一个python脚本，该库自动填写网站的表单，然后发送邮件。

我知道这一点，因为网站也是我早就完成的。

import urllib.request
import urllib.parse
url = "http://saeindiauvce.com/"
values ={'name':'bibhash1970' ,
         'to':'bibhash1996@gmail.com' ,  
          'subject':'just checking' ,            
          'message':'scraping1234' , 
         'submit':'save'}
#print (values)

data = urllib.parse.urlencode(values)
data = data.encode('utf-8')
req = urllib.request.Request(url,data)
resp = urllib.request.urlopen(req)
respdata = resp.read()

print (respdata)

POST请求无效，我不知道出了什么问题。

Answer 1

您显示的页面中的表单如下：

<form action="mail.php" method="POST" class="form-horizontal" role="form">
    <!--...-->
</form>

因此，您应该将请求发送到mail.php而不是索引。

import urllib.request
import urllib.parse
url = "http://saeindiauvce.com/mail.php"
values ={'name':'bibhash1970' ,
         'to':'bibhash1996@gmail.com' ,  
          'subject':'just checking' ,            
          'message':'scraping1234' , 
         'submit':'save'}
#print (values)

data = urllib.parse.urlencode(values)
data = data.encode('utf-8')
req = urllib.request.Request(url,data)
urllib.request.urlopen(req)

运行时，我收到303错误，但在Firefox浏览器中运行时会出现同样的错误：

使用网络管理员时。

shell中的演示：

$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> import urllib.request
>>> import urllib.parse
>>> url = "http://saeindiauvce.com/mail.php"
>>> values ={'name':'bibhash1970' ,
...          'to':'bibhash1996@gmail.com' ,  
...           'subject':'just checking' ,            
...           'message':'this is a test' , 
...          'submit':'save'}
>>> #print (values)
... 
>>> data = urllib.parse.urlencode(values)
>>> data = data.encode('utf-8')
>>> req = urllib.request.Request(url,data)
>>> resp = urllib.request.urlopen(req)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.5/urllib/request.py", line 163, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.5/urllib/request.py", line 472, in open
    response = meth(req, response)
  File "/usr/lib/python3.5/urllib/request.py", line 582, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python3.5/urllib/request.py", line 510, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.5/urllib/request.py", line 444, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.5/urllib/request.py", line 590, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 303: See Other