Forbidden (403) CSRF verification failed. Request aborted. Help Reason given for failure: CSRF token missing or incorrect. 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: Your browser is accepting cookies. The view function uses RequestContext for the template, instead of Context. 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.
解决方法：
1 In the template, there is a {% csrf_token %} template tag inside each POST form that targets an internal URL.在表单里加上{% csrf_token %}。
2 在setting.py 中设置文件如下：
MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', <-------------------新加入 DJANGO <= 1.3 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.csrf.CsrfResponseMiddleware' <-------------------新加入 DJANGO 1.4 # Uncomment the next line for simple clickjacking protection: # 'django.middleware.clickjacking.XFrameOptionsMiddleware', )
但是如果在1.4版本中加入的话又会出现以下问题：
Traceback (most recent call last): File "/usr/lib/python2.7/wsgiref/handlers.py", line 85, in run self.result = application(self.environ, self.start_response) File "/usr/lib/python2.7/site-packages/django/contrib/staticfiles/handlers.py", line 67, in __call__ return self.application(environ, start_response) File "/usr/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 219, in __call__ self.load_middleware() File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 51, in load_middleware raise exceptions.ImproperlyConfigured('Middleware module "%s" does not define a "%s" class' % (mw_module, mw_classname)) ImproperlyConfigured: Middleware module "django.middleware.csrf" does not define a "CsrfResponseMiddleware" class Validating models...
找不到CsrfResponseMiddleware 这个类：
官方文档是这么说的：
Use of the CsrfResponseMiddleware is not recommended because of the performance hit it imposes, and because of a potential security problem (see below). It can be used as an interim measure until applications have been updated to use the csrf_token tag. It is deprecated and will be removed in Django 1.4.
所以上边第二个新加入的东西要删掉，在template文件中的form中加入tag {% csrf_token %} 如下：
<form action="/books/contact/" method="post"> {% csrf_token %} <--------------------------------------新加入的 <p>Subject: <input type="text" name="subject"></p> <p>Your e-mail: (optional): <input type="text" name="email"></p> <p>Message: <textarea name="message" rows="10" cols="50"></textarea></p> <input type="submit" value="Submit"> </form>
加上了之后我运行还是不行：还需要最后一步：在view文件中加入装饰器@csrf_exempt如下：
from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def contact(request):
问题终于解决掉！！！
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。