在 CakePHP 2 中抛出自定义 503 异常

时间:2023-03-20
本文介绍了在 CakePHP 2 中抛出自定义 503 异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要提供一个 503 Service Unavailable HTTP 标头.

I need to give a 503 Service Unavailable HTTP header.

通常我将这些用于 404 和 500 代码

Normally I use these for 404 and 500 codes

throw new NotFoundException();
throw new InternalErrorException();

但是我在 CakePHP 2.2 中找不到 503 的相关异常?

But I couldn't find relevant exception for 503 in CakePHP 2.2?

在我的app/lib/AppExceptionHandler.php"文件中,我有这个处理错误的类/函数.

In my "app/lib/AppExceptionHandler.php" file I have this class/function that handles errors.

class AppExceptionHandler {
    public static function handle($error) {
     }

  • app/Lib"文件夹中,我创建了一个名为MyExceptions.php"的文件.我在这个文件中写了以下代码:

  • Inside "app/Lib" folder I created a file named "MyExceptions.php". I wrote the following code inside this file:

class ServiceUnavailableException extends CakeException {

protected $_messageTemplate = 'Service is not available now';

}

  • bootstrap.php"中我这样写:

    App::uses('MyExceptions', 'Lib');

    App::uses('MyExceptions', 'Lib');

    然后在MyNewController.php"文件中我写了这个:

    Then inside "MyNewController.php" file I wrote this:

    throw new ServiceUnavailableException("just try");

    throw new ServiceUnavailableException("just trying");

    但是当我抛出这个异常时我得到这个错误:

    But then I get this error when I throw this exception:

    Fatal error: Class 'ServiceUnavailableException' not found in
     /var/www/vhosts/example.com/httpdocs/app/Controller/MyNewController.php
     on line 3560
    
    Warning (2): Cannot modify header information - headers already sent by
    (output started at 
    /var/www/vhosts/example.com/httpdocs/app/Controller/MyNewController.php:3560)
    [APP/Lib/AppExceptionHandler.php, line 19]
    

    我想念什么?谢谢

    推荐答案

    Cake 2.0 书中的 Exceptions 页面值得一读.

    这是我的简短测试:

    // in bootstrap.php
    require(APP . 'Lib' . DS . 'MyExceptions.php');
    
    
    // in /Lib/MyExceptions.php
    class ServiceUnavailableException extends CakeException {
    
        protected $_messageTemplate = 'Test';
    }
    
    // in controller
    throw new ServiceUnavailableException('Service unavailable', 503);
    

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