Django Rest Framework JWT-Java 学习之路

我正在使用Django Rest Framework为我的应用程序构建API，并希望实现DjangoRestFramework-JWT进行令牌认证 . 这些步骤看起来很简单，但是当我测试 endpoints 时，我得到500错误 . 终端输出是一大堆html说没有提供csrf_token . 代码和错误如下 . 非常感谢您的帮助 .

curl -X POST -d "username=admin&password=123abc" http://127.0.0.1:8000/api/token/auth/

CSRF错误

<!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>
    </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/1.8/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>

Settings.py

INSTALLED_APPS = (
    ...
    'rest_framework',
    ...
)

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
    ),
}

JWT_AUTH = {
    'JWT_RESPONSE_PAYLOAD_HANDLER':
        'app.utils.jwt_response_payload_handler',
    'JWT_EXPIRATION_DELTA': datetime.timedelta(seconds=30000),
}

全球Urls.py

urlpatterns = patterns(
    ...
    url(r'^api/auth/token/$', 'rest_framework_jwt.views.obtain_jwt_token'),
    url(r'^api/auth/', include('rest_framework.urls', namespace='rest_framework')),
    url(r'^api/', include(router.urls)),
)

1 回答

4
You are getting this error because of SessionAuthentication class defined in the DRF settings.

DRF的 SessionAuthentication 使用Django的会话框架进行身份验证，需要检查CSRF . DRF enforces CSRF check for authenticated users. 这意味着只有经过身份验证的请求才需要CSRF令牌，并且可以在没有CSRF令牌的情况下发送匿名请求 .

现在，您正在向经过身份验证的用户发出请求，并且根据 settings.py 文件中 DEFAULT_AUTHENTICATION_CLASSES 中定义的顺序，首先调用 SessionAuthentication . 它检查请求是否来自经过身份验证的用户，如果是，则必须在请求标头中设置 CSRF 令牌 . 由于您未在请求中发送 CSRF Token ，因此它返回错误 .

您在提出请求时 need to pass CSRF Token in the headers . 你可以通过 --header/-H 选项来做到这一点 .
```
--header "X-CSRFToken: {token_value}" # using '--header'
-H "X-CSRFToken: {token_value}" # using '-H'
```
您可以将您的请求更改为：
```
curl --header "X-CSRFToken: {token_value}" -X POST -d "username=admin&password=123abc" http://127.0.0.1:8000/api/token/auth/
```
Another method:

还有另一个选项，您可以在其中创建自定义会话身份验证类，该类不会对经过身份验证的用户强制执行此CSRF检查 .

下面的 SessionCsrfExemptAuthentication 类不对经过身份验证的用户强制执行CSRF令牌检查 .
```
from rest_framework.authentication import SessionAuthentication 

class SessionCsrfExemptAuthentication(SessionAuthentication):

    def enforce_csrf(self, request):
        return  # To not perform the csrf check previously happening
```
然后，您可以在以下设置中定义此身份验证类：
```
'DEFAULT_AUTHENTICATION_CLASSES': (
        # Replace DRF session authentication class with our custom authentication class
        'rest_framework.authentication.SessionCsrfExemptAuthentication',
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
    ),
```
回复于 2024-05-01T05:14:16+08:00

Django Rest Framework JWT

1 回答

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