問題描述

XMLHttpRequest 無法加載 http://myapi/api/rating.對預檢請求的響應未通過訪問控制檢查:請求的資源上不存在Access-Control-Allow-Origin"標頭.Origin 'http://localhost:8104' 因此不允許訪問.響應的 HTTP 狀態代碼為 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.

我不明白為什么我不能發出 CORS 請求.我已經在這里安裝了中間件，將它添加到全局http內核中，但它仍然不起作用.嘗試根據 stackoverflow 建議創建自定義中間件，但這也不起作用.還嘗試添加一個路由組.最后，我嘗試在請求操作中手動設置響應標頭.我真的被困住了 - 感謝幫助！

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!

查看代碼:https://gist.github.com/KerryRitter/0d7ababb7b9eb8d54f0ae55

推薦答案

如果你使用的是 Laravel 5.5 &Laravel 5.x 并面臨同樣的問題，如請求的資源上不存在Access-Control-Allow-Origin"標頭.只需使用以下軟件包并配置您的系統.

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

您還需要將 CorsServiceProvider 添加到您的 config/app.php providers 數組:

You also need to add CorsServiceProvider to your config/app.php providers array:

FruitCakeCorsCorsServiceProvider::class,

要允許所有路由使用 CORS，請在 app/Http/Kernel 的 $middleware 屬性中添加 HandleCors 中間件.php 類:

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,
];

中間件用途:

protected $middlewareGroups = [
   'web' => [
       // ...
   ],

   'api' => [
        // ...
        FruitcakeCorsHandleCors::class,
    ],
];

第三步

安裝完成后，運行以下命令以發布供應商文件.

Once your installation completed run below command to publish the vendor files.

php artisan vendor:publish --provider="FruitcakeCorsServiceProvider"

希望這個回答能幫助和我一樣面臨同樣問題的人.

Hope this answer helps someone facing the same problem as myself.

這篇關于沒有“Access-Control-Allow-Origin"標頭 - Laravel的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！