Laravel 7 Passport：被CORS政策阻止

Question

当我向Laravel 7.3 Passport API发出以下axios请求时：

let url = 'http://laravel.test/oauth/token'

let params = {
  client_id:  4,
  client_secret: 'FBkMiLI8ecdb4A8OhLRDGS1SasZP5NT7i9Qpp7bP',
  grant_type: 'password',
  username: '[email protected]',
  password: '1qaz@WSX',
  scope: '*'
}

let headers = {
    'Access-Control-Allow-Origin': '*',
    'Access-Control-Allow-Methods': 'HEAD, GET, POST, PUT, PATCH, DELETE, OPTIONS',
    'Access-Control-Allow-Headers': 'Content-Type'
  }

axios.post(url, params, headers)
.then(response => {
      this.access_token = response['data']['access_token'];
      this.get_users_data()
  })
.catch(response => {
// eslint-disable-next-line
    console.log(response)
});

我在我的JavaScript控制台中收到此错误：

从[http://laravel.test/oauth/token访问XMLHttpRequest来源“ http://localhost:3000”已被CORS政策阻止：对预检请求的响应未通过访问控制检查：否请求中存在“ Access-Control-Allow-Origin”标头资源。

此外，Laravel 7.3中的config/cors.php配置为允许任何操作（默认情况下：）：

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | 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
    |
    */

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

    'allowed_methods' => ['*'],

    'allowed_origins' => ['*'],

    'allowed_origins_patterns' => [],

    'allowed_headers' => ['*'],

    'exposed_headers' => [],

    'max_age' => 0,

    'supports_credentials' => false,

];

我的请求出了什么问题？

Answer 1

您的请求没有问题。您的API资源有一个CORS policy，它限制了哪些域可以访问该资源。您收到的错误是告诉您该资源没有允许从调用域访问的CORS标头。

您需要将CORS策略设置为将您的域列入白名单：http://localhost:3000。您可能会发现本文Handling CORS in a Laravel Application，很有帮助：

最近我们发布了laravel-cors。该软件包可以为您的Laravel应用添加必要的CORS标头。