基于Python+Django重定向的例子

时间：2022-02-05 11:15:26

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

 class HttpResponseRedirectBase(HttpResponse):

     allowed_schemes = ['http', 'https', 'ftp']

     def __init__(self, redirect_to, *args, **kwargs):

         super().__init__(*args, **kwargs)

         self['Location'] = iri_to_uri(redirect_to)

         parsed = urlparse(str(redirect_to))

         if parsed.scheme and parsed.scheme not in self.allowed_schemes:

             raise DisallowedRedirect("Unsafe redirect to URL with protocol '%s'" % parsed.scheme)

     url = property(lambda self: self['Location'])

     def __repr__(self):

         return '<%(cls)s status_code=%(status_code)d%(content_type)s, url="%(url)s">' % {

             'cls': self.__class__.__name__,

             'status_code': self.status_code,

             'content_type': self._content_type_for_repr,

             'url': self.url,

         }

 class HttpResponseRedirect(HttpResponseRedirectBase):

     status_code = 302

 class HttpResponsePermanentRedirect(HttpResponseRedirectBase):

     status_code = 301

 class HttpResponseNotModified(HttpResponse):

     status_code = 304

     def __init__(self, *args, **kwargs):

         super().__init__(*args, **kwargs)

         del self['content-type']

     @HttpResponse.content.setter

     def content(self, value):

         if value:

             raise AttributeError("You cannot set content to a 304 (Not Modified) response")

         self._container = []

小栗子:

 def redirectdemo(request):

     dic_params = {'username': request.GET.get('username'),

                   'password': request.GET.get('password')}

     if validate_parameters(dic_params):

         return HttpResponsePermanentRedirect("http://www.baidu.com")

     else:

         return HttpResponse('<html>error page</html>')

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