使用自定义中间件解决django 跨域

django 跨域的问题解决

https://www.cnblogs.com/lovershowtime/p/11572569.html  跨域知识点

在后台 解决跨域问题 使用中间件 作用全局

cors.py

class MiddlewareMixin(object):
    def __init__(self, get_response=None):
        self.get_response = get_response
        super(MiddlewareMixin, self).__init__()

    def __call__(self, request):
        response = None
        if hasattr(self, ‘process_request‘):
            response = self.process_request(request)
        if not response:
            response = self.get_response(request)
        if hasattr(self, ‘process_response‘):
            response = self.process_response(request, response)
        return response

class CORSMiddleware(MiddlewareMixin):

    def process_response(self,request,response):
        # 添加响应头

        # 允许你的域名来获取我的数据
        response[‘Access-Control-Allow-Origin‘] = "*"

        # 允许你携带Content-Type请求头
        response[‘Access-Control-Allow-Headers‘] = "Content-Type"

        # 允许你发送DELETE,PUT
        response[‘Access-Control-Allow-Methods‘] = "DELETE,PUT"
        return response

MIDDLEWARE = [
    ‘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‘,
    ‘api.cors.CORSMiddleware‘,
]

一 . Vue+Django 前后端数据交互知识点（一）