Django提交表单报错-CSRF token missing or incorrect.

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日志建议解决办法：
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 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.

第一确定setting文件中是或否存在django.middleware.csrf.CsrfViewMiddleware

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',#确定是否存在或者注销
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

第二在表单中添加 {% csrf_token %}

    <form action="/home" method="post" enctype="multipart/form-data">
        {# 添加以下语句 #}
        {% csrf_token %}
        <p>
            <input type="file" value="file">
            <input type="submit" value="提交">
        </p>
    </form>

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