laravel 跨域问题解决

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laravel 的接口有时候会遇到跨域问题，报错：

blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed

查阅资料，网上说的各种中间件，添加 header 方法等等的，均不起任何作用。

后来发现配置文件有一个 cors.php 的配置，进去查阅：

/*
    |--------------------------------------------------------------------------
    | Cross-Origin Resource Sharing (CORS) Configuration
    |--------------------------------------------------------------------------
    |
    | Here you may configure your settings for cross-origin resource sharing
    | or "CORS". This determines what cross-origin operations may execute
    | in web browsers. You are free to adjust these settings as needed.
    |
    | To learn more: https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
    |
    */

基本可以判断，这里就是控制跨域了，下面第一行，有个 path 的参数, 只需要将你的 url 参数加进来就可以了。

'paths' => ['api/*','sanctum/csrf-cookie'],  // 这里增加路由参数

    'allowed_methods' => ['*'],

    'allowed_origins' => ['*'],

    'allowed_origins_patterns' => [],

    'allowed_headers' => ['*'],

    'exposed_headers' => [],

    'max_age' => 0,

    'supports_credentials' => false,