基于Python+Django重定向的例子

Django源码, 这里HttpResponseRedirect和HttpResponsePermanentRedirect没有太大差别,前者是返回302临时重定向,后者返回301永久重定向

 1 class HttpResponseRedirectBase(HttpResponse):
 2     allowed_schemes = ['http', 'https', 'ftp']
 3 
 4     def __init__(self, redirect_to, *args, **kwargs):
 5         super().__init__(*args, **kwargs)
 6         self['Location'] = iri_to_uri(redirect_to)
 7         parsed = urlparse(str(redirect_to))
 8         if parsed.scheme and parsed.scheme not in self.allowed_schemes:
 9             raise DisallowedRedirect("Unsafe redirect to URL with protocol '%s'" % parsed.scheme)
10 
11     url = property(lambda self: self['Location'])
12 
13     def __repr__(self):
14         return '<%(cls)s status_code=%(status_code)d%(content_type)s, url="%(url)s">' % {
15             'cls': self.__class__.__name__,
16             'status_code': self.status_code,
17             'content_type': self._content_type_for_repr,
18             'url': self.url,
19         }
20 
21 
22 class HttpResponseRedirect(HttpResponseRedirectBase):
23     status_code = 302
24 
25 
26 class HttpResponsePermanentRedirect(HttpResponseRedirectBase):
27     status_code = 301
28 
29 
30 class HttpResponseNotModified(HttpResponse):
31     status_code = 304
32 
33     def __init__(self, *args, **kwargs):
34         super().__init__(*args, **kwargs)
35         del self['content-type']
36 
37     @HttpResponse.content.setter
38     def content(self, value):
39         if value:
40             raise AttributeError("You cannot set content to a 304 (Not Modified) response")
41         self._container = []

小栗子:

1 def redirectdemo(request):
2     dic_params = {'username': request.GET.get('username'),
3                   'password': request.GET.get('password')}
4     if validate_parameters(dic_params):
5         return HttpResponsePermanentRedirect("http://www.baidu.com")
6     else:
7         return HttpResponse('<html>error page</html>')