两种解决方法

一：CSRF验证设置
前端：
html文件需要加上 {% csrf_token %}

<form action="." method="POST">
    {% csrf_token %}
    <input type="text" name="test" value="{{test}}"/>
    <input type="submit" value="提交" />
</form>

Django后台---2种解决方法：
1：继承TemplateView

from django.views.generic import TemplateView

class TestView(TemplateView):

    template_name = "test.html"

    def get(self, request):
        return self.render_to_response(locals())

    def post(self, request):
        test = request.POST.get("test", "").strip()
        return self.render_to_response(locals())

2： 加上RequestContext

from django.views.generic import View
from django.shortcuts import RequestContext

class TestView(View):

    template_name = "test.html"

    def get(self, request):
        # return render(request, self.template_name )    #这行代码作用和下面一行一样
        return render_to_response(self.template_name, context_instance=RequestContext(request))

    def post(self, request):
        test = request.POST.get("test", "").strip()
        # return render(request, self.template_name, locals())  #这行代码作用和下面一行一样
        return render_to_response(self.template_name, locals(), context_instance=RequestContext(request))

二：不使用CSRF验证
1：html文件中form表单中移除 {%csrf_token%}

2： settings.py文件中不使用csrf中间件

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    #'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.middleware.locale.LocaleMiddleware',
)