我正在尝试使用Axios向我的API(Django REST Framework)发出请求,但出现以下错误:
Access to XMLHttpRequest at 'http://trvl.hopto.org:8000/api/airports/MSP/routes' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
当您使用cUrl进行检查时,甚至会很困难:
curl -I -X GET -H "Origin: http://localhost:3000" -H 'Access-Control-Request-Method: GET' http://trvl.hopto.org:8000/api/airports/MSP/routes 2>&1 | grep 'Access-Control-Allow-Origin'
Response: Access-Control-Allow-Origin: *
Full response from cUrl Options:
OPTIONS request: curl -I -X OPTIONS -H "Origin: http://localhost:3000" -H 'Access-Control-Request-Method: GET' http://trvl.hopto.org:8000/api/airports/MSP/routes
HTTP/1.1 200 OK
Date: Wed, 27 Mar 2019 10:58:01 GMT
Server: WSGIServer/0.2 CPython/3.6.8
Content-Type: text/html; charset=utf-8
Content-Length: 0
Vary: Origin
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: accept, accept-encoding, authorization, content-type, dnt, origin, user-agent, x-csrftoken, x-requested-with
Access-Control-Allow-Methods: DELETE, GET, OPTIONS, PATCH, POST, PUT
Access-Control-Max-Age: 86400
使用Axios时:
let url = 'http://A.hopto.org:8000/api/airports/MSP/routes';
axios.get(url)
.catch((err) => {
console.error(err);
})
.then((response, ) => {
console.log(response);
});
Response:
Access to XMLHttpRequest at 'http://API.hopto.org:8000/api/airports/MSP/routes' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
问题是该API已启用CORS,但我无法使其与WebApp中的Axios和React一起使用。
更新:
Here is my Django settings.py I'm using the https://github.com/ottoyiu/django-cors-headers module.
**settings.py**
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = ['*']
# Application definition
INSTALLED_APPS = [
'corsheaders',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'trvl',
'rest_framework',
'coreapi',
'django_filters',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.common.CommonMiddleware',
#'corsheaders.middleware.CorsPostCsrfMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware'
]
CORS_ORIGIN_ALLOW_ALL = True
答案 0 :(得分:0)
在后端代码上,您需要添加http://localhost:3000
作为字段Access-Control-Allow-Origin
的响应标头的一部分
还要确保您的回复中包含以下字段:Access-Control-Allow-Methods
包括GET
您提到您的后端API代码已启用CORS。如果上述方法不起作用,您可以更新您的信息以包括设置方式吗?
答案 1 :(得分:0)
这是因为您忘记了网址末尾的“ /”。
let url = 'http://A.hopto.org:8000/api/airports/MSP/routes/';
答案 2 :(得分:0)
我需要在http://
网址中添加localhost:8000
前缀