如何在CakePHP中创建自定义异常处理程序？

<?php
namespace AppError;

use CakeCoreExceptionException;

class AppException extends Exception
{
    protected $_messageTemplate = 'An error occurred.';
    protected $_defaultCode = 500;

    public function __construct($message = null, $code = null, $previous = null)
    {
        if (empty($message)) {
            $message = $this->_messageTemplate;
        }

        if (empty($code)) {
            $code = $this->_defaultCode;
        }

        parent::__construct($message, $code, $previous);
    }

    public function getResponse()
    {
        // your custom response handling logic here
    }
}

<?php 
.namespace AppError;

use CakeErrorExceptionRenderer;
use Throwable;

class AppExceptionRenderer extends ExceptionRenderer {

    public function render() {
        $exception = $this->error instanceof Throwable ? $this->error : new FatalErrorException($this->error->getMessage(), 0, E_ERROR, __FILE__, __LINE__);
        
        $this->controller->response = $this->_getJsonResponse($exception);
        
        $this->controller->response->statusCode($exception->getCode());
        
    }
    
    protected function _getJsonResponse(Throwable $exception): JsonResponse {
        $response = new JsonResponse([
            'status' => 'error',
            'code' => $exception->getCode(),
            'message' => $exception->getMessage(),
        ],JsonResponse::HTTP_OK);
        
        if (method_exists($exception, 'getResponse')) {
            $response = $exception->getResponse();
        }
        
        return $response;
    }
}

'Error' => [
        'errorLevel' => E_ALL & ~E_USER_DEPRECATED,
        'exceptionRenderer' => 'AppErrorAppExceptionRenderer',
    ],