1、执行composer require barryvdh/laravel-cors
2、kernel.php
protected $middleware = [ \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class, \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class, \App\Http\Middleware\TrimStrings::class, \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class, \App\Http\Middleware\TrustProxies::class, \Barryvdh\Cors\HandleCors::class,//新增这行 ];
原作者:https://blog.youkuaiyun.com/jj546630576/article/details/79253214