Django解决跨域问题

1.安装：pip install django-cors-headers

2.修改django项目中的settings.py

INSTALLED_APPS = [
    ...
    'corsheaders',
]

MIDDLEWARE = [
    'corsheaders.middleware.CorsMiddleware',  # 这个是跨域的中间件需要放在最上边，也可以在下边两个的下面，但是不能放在其他位置了
    'django.middleware.common.CommonMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    # 'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'XXX.middleware.MyCorsMiddle.MyCorsMiddle',  # 这是自己写的中间件，添加响应头
]

# 新添以下内容
CORS_ALLOW_CREDENTIALS = True
CORS_ORIGIN_ALLOW_ALL = True
# CORS_ORIGIN_WHITELIST = (‘*’)

CORS_ALLOW_METHODS = (
    'DELETE',
    'GET',
    'OPTIONS',
    'PATCH',
    'POST',
    'PUT',
    'VIEW',
)

CORS_ALLOW_HEADERS = (
    'XMLHttpRequest',
    'X_FILENAME',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
)

3.添加中间件来添加响应头

就是为了在响应头内添加上Access-Control-Allow-Origin = *

from django.utils.deprecation import MiddlewareMixin


class MyCorsMiddle(MiddlewareMixin):

    def process_response(self, request, response):
        if request.method == 'OPTIONS':
            # 允许它
            response['Access-Control-Allow-Headers'] = 'Content-Type'
            # obj['Access-Control-Allow-Headers']='*'

        # obj['Access-Control-Allow-Origin']='http://127.0.0.1:8000'

        response['Access-Control-Allow-Origin'] = '*'
        return response

开发过程中遇到的问题，有误斧正。