「Django」rest_framework学习系列-API访问跨域问题

#以中间件方式解决API数据访问跨域问题
1.API下新建文件夹下写PY文件
a.引入内置类继承
from django.middleware.common import MiddlewareMixin
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，'*'也可以单独设置
response['Access-Control-Allow-Origin'] = '*'

#允许携带Content-Type请求头
response['Access-Control-Allow-Headers'] = 'Content-Type'

return response
b.重写继承类
'''
可以引入，也可以如下重写方法
class MiddlewareMixin:
def __init__(self, get_response=None):
self.get_response = get_response
super().__init__()

def __call__(self, request):
response = None
if hasattr(self, 'process_request'):
response = self.process_request(request)
response = response or 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，'*'也可以单独设置
response['Access-Control-Allow-Origin'] = '*'

#允许携带Content-Type请求头
response['Access-Control-Allow-Headers'] = 'Content-Type'

return response
2.settings中间件添加
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',
'middleware.CorsMiddleware.CORSMiddleware'
]