weidian-online-api/app/Exceptions/ExampleException.php

<?php

namespace App\Exceptions;

use Exception;

class ExampleException extends Exception
{
    /**
     * 转换异常为 HTTP 响应
     *
     * @param  \Illuminate\Http\Request
     * @return \Illuminate\Http\Response
     */
    public function render($request)
    {
        return response($this->getMessage() ?: '发生异常啦');
    }
}