reactjs - 带有水果蛋糕的 Laravel CORS

Question

我做 react 项目与 laravel 后端...我有一个 CORS 问题，我做的一切都像下面的链接，水果蛋糕。
Laravel 6 CORS policy issue with API
但仍然无法正常工作。
cors.php:

        'paths' => ['api/*'],

    /*
    * Matches the request method. `[*]` allows all methods.
    */
    'allowed_methods' => ['*'],

    /*
     * Matches the request origin. `[*]` allows all origins.
     */
    'allowed_origins' => ['*'],

    /*
     * Matches the request origin with, similar to `Request::is()`
     */
    'allowed_origins_patterns' => [],

    /*
     * Sets the Access-Control-Allow-Headers response header. `[*]` allows all headers.
     */
    'allowed_headers' => ['*'],

    /*
     * Sets the Access-Control-Expose-Headers response header.
     */
    'exposed_headers' => false,

    /*
     * Sets the Access-Control-Max-Age response header.
     */
    'max_age' => false,

    /*
     * Sets the Access-Control-Allow-Credentials header.
     */
    'supports_credentials' => false,

而且，内核中间件是:

        protected $middleware = [
        \App\Http\Middleware\TrustProxies::class,
        \App\Http\Middleware\CheckForMaintenanceMode::class,
        \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
        \App\Http\Middleware\TrimStrings::class,
        \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,

        \Fruitcake\Cors\HandleCors::class,
    ];

还有什么问题？

Answer 1

以下是使用 fruitcake/laravel-cors 时的一些问题:

把 HandleCors $middleware顶部的中间件在 app/Http/Kernel.php :

protected $middleware = [
    \Fruitcake\Cors\HandleCors::class,
    \App\Http\Middleware\TrustProxies::class,
    \App\Http\Middleware\CheckForMaintenanceMode::class,
    \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
    \App\Http\Middleware\TrimStrings::class,
    \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
];

把它放在底部或中间的某个地方是行不通的，因为请求可能会被其他具有更高优先级的中间件拒绝。

做 不是 在 Controller 中死亡或退出。

例如，以下将不起作用:

Route::get('/cors-test', function() {
   dd("This won't work");
});

因为 Fruitcake\Cors\HandleCors::handle方法添加相关标题 后 处理请求:
Fruitcake\Cors\HandleCors.php

public function handle($request, Closure $next)
{
    // --- omitted

    // Handle the request
    $response = $next($request); // <--- if you die here

    if ($request->getMethod() === 'OPTIONS') {
        $this->cors->varyHeader($response, 'Access-Control-Request-Method');
    }
    
    // you will never reach here
    return $this->addHeaders($request, $response);
}

dump也不起作用

更改后清除配置缓存 app/config/cors.php :

$ php artisan config:cache