laravel异常处理

<?php

namespace AppExceptions;

use Exception;
use IlluminateHttpRequest;
//异常处理
class InvalidRequestException extends Exception
{

//先执行构造函数,然后自动执行render
public function __construct(string $message = "", int $code = 400)
{
    parent::__construct($message, $code);
}

public function render(Request $request)
{
    //如果请求是ajax就返回状态码
    if ($request->expectsJson()) {
        // json() 方法第二个参数就是 Http 返回码
        return response()->json(['msg' => $this->message, 'code'=>$this->code]);
    }
    dump($request);
    return response($this->getMessage().$this->code);

}

}

Route::get('/example', function () {

throw new \App\Exceptions\InvalidRequestException('我是一个异常啦',$code=406);

});