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Reason given for failure:
CSRF cookie not set.
In general, this can occur when there is a genuine Cross Site Request Forgery, or when Django‘s CSRF mechanism has not been used correctly. For POST forms, you need to ensure:
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The view function passes a request to the template‘s render method.
In the template, there is a {% csrf_token %} template tag inside each POST form that targets an internal URL.
If you are not using CsrfViewMiddleware, then you must use csrf_protect on any views that use the csrf_token template tag, as well as those that accept the POST data.
You‘re seeing the help section of this page because you have DEBUG = True in your Django settings file. Change that to False, and only the initial error message will be displayed.
You can customize this page using the CSRF_FAILURE_VIEW setting.
被折腾很久，最终解决是参考http://blog.csdn.net/middlekingt/article/details/8593031 里面添加了装饰器好了。
但是问题依旧，后来又看到另外一种方式在这个网站上：
o manually exclude a view function from being handled by either of the two CSRFmiddleware, you can use the csrf_exempt decorator, found in thedjango.views.decorators.csrf module. For example:
from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def my_view(request):
return HttpResponse(‘Hello world‘)
Like the middleware, the csrf_exempt decorator is composed of two parts: acsrf_view_exempt decorator and a csrf_response_exempt decorator, foundin the same module. These disable the view protection mechanism(CsrfViewMiddleware) and the response post-processing(CsrfResponseMiddleware) respectively. They can be used individually ifrequired.
终于把这个问题解决了。
其实我是绕开了这个问题，因为django之所以引进CSRF是为了避免Cross Site Request Forgeries攻击，而上面的解决方法恰好禁止掉这个django的功能。所以日后还得仔细研究下，在不禁掉这个功能的前提下成功的提交表单。