XMLHttpRequest 无法加载 http://myapi/api/rating.对预检请求的响应未通过访问控制检查:请求的资源上不存在Access-Control-Allow-Origin"标头.Origin 'http://localhost:8104' 因此不允许访问.响应的 HTTP 状态代码为 403.
XMLHttpRequest cannot load http://myapi/api/rating. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8104' is therefore not allowed access. The response had HTTP status code 403.
我不明白为什么我不能发出 CORS 请求.我已经在这里安装了中间件,将它添加到全局http内核中,但它仍然不起作用.尝试根据 stackoverflow 建议创建自定义中间件,但这也不起作用.还尝试添加一个路由组.最后,我尝试在请求操作中手动设置响应标头.我真的被困住了 - 感谢帮助!
I can't figure out why I can't make CORS requests. I've install the middleware here, added it to the global http kernel, but it still doesn't work. Tried to create a custom middleware given stackoverflow suggestions but that also did not work. Also tried adding a Route group. Lastly, I tried setting the response headers manually in the request action. I'm really stuck - help is appreciated!
查看代码:https://gist.github.com/KerryRitter/0d7ababb7b9eb8d54f0ae55
如果你使用的是 Laravel 5.5
&Laravel 5.x
并面临同样的问题,如请求的资源上不存在Access-Control-Allow-Origin"标头
.只需使用以下软件包并配置您的系统.
If you are using Laravel 5.5
& Laravel 5.x
and facing same problem like No 'Access-Control-Allow-Origin' header is present on the requested resource
. Just use following package and config your system.
第 1 步:
composer require barryvdh/laravel-cors
第 2 步
您还需要将 CorsServiceProvider
添加到您的 config/app.php
providers 数组:
You also need to add CorsServiceProvider
to your config/app.php
providers array:
FruitCakeCorsCorsServiceProvider::class,
要允许所有路由使用 CORS
,请在 app/Http/Kernel 的
类:$middleware
属性中添加 HandleCors
中间件.php
To allow CORS
for all your routes, add the HandleCors
middleware in the $middleware
property of app/Http/Kernel.php
class:
供全球使用:
protected $middleware = [
// ...
FruitcakeCorsHandleCors::class,
];
中间件用途:
protected $middlewareGroups = [
'web' => [
// ...
],
'api' => [
// ...
FruitcakeCorsHandleCors::class,
],
];
第三步
安装完成后,运行以下命令以发布供应商文件.
Once your installation completed run below command to publish the vendor files.
php artisan vendor:publish --provider="FruitcakeCorsServiceProvider"
希望这个回答能帮助和我一样面临同样问题的人.
Hope this answer helps someone facing the same problem as myself.
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