在使用React调用REST API时发生CORS错误 [英] CORS error while consuming calling REST API with React

问题描述

我使用django-rest-framework创建了一个宁静的api，可通过以下URL访问该 http://192.168.33.10:8002/scenarios/，我正在创建一个React应用，以调用api并消耗其数据.

I created a restful api with django-rest-framework accessible with this URL http://192.168.33.10:8002/scenarios/ and I'm creating a React app to make calls to the api an d consume its data.

我正在使用访存来调用api

I'm using fetch to make calls to the api

componentWillMount: function(){
 this.setState({Problemstyle: this.props.Problemstyle})
 fetch('http://192.168.33.10:8002/scenarios/')
 .then(result=>result.json())
 .then(result=> {
   this.steState({items:result})
 })
 },

运行我的应用程序时，我的浏览器出现错误

when i run my app i get an error in my browser

Fetch API无法加载 http://192.168.33.10:8002/scenarios/.所请求的资源上没有"Access-Control-Allow-Origin"标头.因此，不允许访问来源" http://192.168.33.10:8001 .如果不透明的响应可以满足您的需求，请将请求的模式设置为"no-cors"，以在禁用CORS的情况下获取资源.

Fetch API cannot load http://192.168.33.10:8002/scenarios/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.33.10:8001' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

我不确定如何解决此问题，因为我刚刚开始使用React

I'm not sure on how to solve this problem as i'm just starting to use React

推荐答案

通过 pip安装django-cors-headers安装django-cors-headers

然后，添加已安装的应用程序"corsheaders".

Then, add in installed apps 'corsheaders'.

添加设置，

CORS_ORIGIN_ALLOW_ALL = True

和

ALLOWED_HOSTS = ['*']

这应该可以解决问题.

更新

您还需要将其添加到中间件中，

You'll also need to add it to the middlewares,

MIDDLEWARE = [  # Or MIDDLEWARE_CLASSES on Django < 1.10
    ...
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    ...
]

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