Question

被叫视图功能就像这样

def parsing(request):
    url = request.POST['url']
    ...
    return HttpResponse(json.dumps(resultDict))

当我通过以下代码向其发送帖子请求时，

import requests
url = 'http://tv.cntv.cn/video/C12278/a7ea7c0e810b4701bf1d3f5254b8a26a'
c = requests.post("http://127.0.0.1:8000/VideoParser/", data={'url': url})
print(c.text)

然后请求失败，它只是发出以下HTML代码，

<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
  <meta name="robots" content="NONE,NOARCHIVE">
  <title>403 Forbidden</title>
  <style type="text/css">
    html * { padding:0; margin:0; }
    body * { padding:10px 20px; }
    body * * { padding:0; }
    body { font:small sans-serif; background:#eee; }
    body>div { border-bottom:1px solid #ddd; }
    h1 { font-weight:normal; margin-bottom:.4em; }
    h1 span { font-size:60%; color:#666; font-weight:normal; }
    #info { background:#f6f6f6; }
    #info ul { margin: 0.5em 4em; }
    #info p, #summary p { padding-top:10px; }
    #summary { background: #ffc; }
    #explanation { background:#eee; border-bottom: 0px none; }
  </style>
</head>
<body>
<div id="summary">
  <h1>Forbidden <span>(403)</span></h1>
  <p>CSRF verification failed. Request aborted.</p>


  <p>You are seeing this message because this site requires a CSRF cookie when submitting forms. This cookie is required for security reasons, to ensure that your browser is not being hijacked by third parties.</p>
  <p>If you have configured your browser to disable cookies, please re-enable them, at least for this site, or for &#39;same-origin&#39; requests.</p>

</div>

<div id="info">
  <h2>Help</h2>
    
    <p>Reason given for failure:</p>
    <pre>
    CSRF cookie not set.
    </pre>
    

  <p>In general, this can occur when there is a genuine Cross Site Request Forgery, or when
  <a
  href="https://docs.djangoproject.com/en/1.9/ref/csrf/">Django's
  CSRF mechanism</a> has not been used correctly.  For POST forms, you need to
  ensure:</p>

  <ul>
    <li>Your browser is accepting cookies.</li>

    <li>The view function passes a <code>request</code> to the template's <a
    href="https://docs.djangoproject.com/en/dev/topics/templates/#django.template.backends.base.Template.render"><code>render</code></a>
    method.</li>

    <li>In the template, there is a <code>{% csrf_token
    %}</code> template tag inside each POST form that
    targets an internal URL.</li>

    <li>If you are not using <code>CsrfViewMiddleware</code>, then you must use
    <code>csrf_protect</code> on any views that use the <code>csrf_token</code>
    template tag, as well as those that accept the POST data.</li>

  </ul>

  <p>You're seeing the help section of this page because you have <code>DEBUG =
  True</code> in your Django settings file. Change that to <code>False</code>,
  and only the initial error message will be displayed.  </p>

  <p>You can customize this page using the CSRF_FAILURE_VIEW setting.</p>
</div>

</body>
</html>

似乎失败的原因是

未设置CSRF cookie。

然而，我的应用程序在整个过程中没有明确涉及任何cookie和模板，任何人都可以帮助解决问题？我只是Django学习者的开始。

Answer 1

您正在使用POST请求，该请求通过请求令牌再次受到CSRF的攻击保护。

您可以在Django docs上阅读有关CSRF令牌的更多信息：https://docs.djangoproject.com/en/1.9/ref/csrf/

Answer 2

您可以使用csrf_exempt装饰器查看视图：

from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
def parsing(request):
    url = request.POST['url']
    ...
    return HttpResponse(json.dumps(resultDict))

来自文档：

此装饰器将视图标记为免于保护由中间件确保。

您可以阅读有关csrf protection here

的更多信息

Answer 3

此问题有两个选项

第一： -

如果您想使用csrf身份验证，则必须在来自前端的每个请求中添加cookie，因为您需要在前端代码中添加以下sniipet

function getCookie(name) {
    var cookieValue = null;
    if (document.cookie && document.cookie != '') {
        var cookies = document.cookie.split(';');
        for (var i = 0; i < cookies.length; i++) {
            var cookie = jQuery.trim(cookies[i]);
            // Does this cookie string begin with the name we want?
            if (cookie.substring(0, name.length + 1) == (name + '=')) {
                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                break;
            }
        }
    }
    return cookieValue;
}
var csrftoken = getCookie('csrftoken');

并在Ajax调用或角度服务中将此csrftoken作为标题传递。

第二： -

如果您收到跨页眉错误，那么如果它拒绝您对django服务器的请求，那么只需执行pip install django-cors-headers并使用

修改settings.py

INSTALLED_APPS = (
    ...
    'corsheaders',
    ...
)


MIDDLEWARE_CLASSES = (
    ...
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    ...
)

希望这对你有所帮助!!

Answer 4

在settings.py中删除MIDDLEWARE_CLASSES中的“django.middleware.csrf.CsrfViewMiddleware”

Django：CSRF验证失败。请求中止

4 个答案: