我正在使用 urllib2 将数据发布到表单。问题是表单回复了 302 重定向。根据Python HTTPRedirectHandler重定向处理程序将接受请求并将其从 POST 转换为 GET 并遵循 301 或 302。我想保留 POST 方法和传递给开启程序的数据。通过简单地将 data=req.get_data() 添加到新请求中,我对自定义 HTTPRedirectHandler 进行了不成功的尝试。
我确信这已经完成了,所以我想我会发一个帖子。
注意:这与这篇文章和这篇文章类似,但我不想阻止重定向,我只想保留 POST 数据。
这是我的 HTTPRedirectHandler 不起作用
class MyHTTPRedirectHandler(urllib2.HTTPRedirectHandler):
def redirect_request(self, req, fp, code, msg, headers, newurl):
"""Return a Request or None in response to a redirect.
This is called by the http_error_30x methods when a
redirection response is received. If a redirection should
take place, return a new Request to allow http_error_30x to
perform the redirect. Otherwise, raise HTTPError if no-one
else should try to handle this url. Return None if you can't
but another Handler might.
"""
m = req.get_method()
if (code in (301, 302, 303, 307) and m in ("GET", "HEAD")
or code in (301, 302, 303) and m == "POST"):
# Strictly (according to RFC 2616), 301 or 302 in response
# to a POST MUST NOT cause a redirection without confirmation
# from the user (of urllib2, in this case). In practice,
# essentially all clients do redirect in this case, so we
# do the same.
# be conciliant with URIs containing a space
newurl = newurl.replace(' ', '%20')
return Request(newurl,
headers=req.headers,
data=req.get_data(),
origin_req_host=req.get_origin_req_host(),
unverifiable=True)
else:
raise HTTPError(req.get_full_url(), code, msg, headers, fp)