如何在Laravel 5.3中修改Passport OAuth中的错误消息？

<?php

namespace App\Http\Controllers\Auth;

use Laravel\Passport\Http\Controllers\HandlesOAuthErrors;

class CustomHandlesOAuthErrors extends HandlesOAuthErrors
{
    /**
     * Get the response for the given exception.
     *
     * @param  \Exception  $e
     * @return \Symfony\Component\HttpFoundation\Response
     */
    protected function convertExceptionToResponse(Exception $e)
    {
        // 在这里可以根据不同的异常类型自定义错误消息
        if ($e instanceof \League\OAuth2\Server\Exception\InvalidCredentialsException) {
            return response()->json([
                'error' => 'invalid_credentials',
                'message' => '自定义错误消息：无效的凭证',
            ], 401);
        }

        // 如果没有匹配到特定的异常类型，可以调用父类的方法处理
        return parent::convertExceptionToResponse($e);
    }
}

<?php

namespace App\Providers;

use App\Http\Controllers\Auth\CustomHandlesOAuthErrors;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\ServiceProvider;
use Laravel\Passport\Passport;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        // 注册自定义验证器类
        Passport::useTokenModel(CustomHandlesOAuthErrors::class);
    }
}

'guards' => [
    'api' => [
        'driver' => 'passport',
        'provider' => 'users',
        'hash' => false,
        'handles' => CustomHandlesOAuthErrors::class, // 替换为自定义验证器类
    ],
],