在Extbase扩展中,可能需要通知用户错误或异常。
在我的情况下,我必须从一个可能不好的来源解析一些数据。因此扩展必须验证此数据。如果数据无效,则需要抛出一个异常,然后由TYPO3处理。
但是,我只能找到有关异常和错误处理程序如何工作的信息,但是没有关于如何从扩展内部正确抛出异常的信息。
那么从Extbase扩展内部抛出异常的目的是什么?
如果我产生语法错误,TYPO3会显示类似于以下内容的消息: (取自the core API reference。)
这就是我所期望的正确抛出错误或异常的样子。
编辑:我尝试抛出这样的错误:
throw new \Exception('Invalid data');
但是,所有前端显示都是
糟糕,发生错误!代码:20160721101726b5339896
产生错误的另一种可能方法:
$GLOBALS['TSFE']->pageNotFoundAndExit('Invalid data');
但是,这会显示“找不到页面”错误而不是预期的异常。
答案 0 :(得分:1)
namespace VendorName\ExtensionName\Controller;
abstract class ActionController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController {
/**
* @var string
*/
protected $entityNotFoundMessage = 'The requested entity could not be found.';
/**
* @var string
*/
protected $unknownErrorMessage = 'An unknown error occurred. The wild monkey horde in our basement will try to fix this as soon as possible.';
/**
* @param \TYPO3\CMS\Extbase\Mvc\RequestInterface $request
* @param \TYPO3\CMS\Extbase\Mvc\ResponseInterface $response
* @return void
* @throws \Exception
* @override \TYPO3\CMS\Extbase\Mvc\Controller\ActionController
*/
public function processRequest(\TYPO3\CMS\Extbase\Mvc\RequestInterface $request, \TYPO3\CMS\Extbase\Mvc\ResponseInterface $response) {
try {
parent::processRequest($request, $response);
}
catch(\Exception $exception) {
// If the property mapper did throw a \TYPO3\CMS\Extbase\Property\Exception, because it was unable to find the requested entity, call the page-not-found handler.
$previousException = $exception->getPrevious();
if (($exception instanceof \TYPO3\CMS\Extbase\Property\Exception) && (($previousException instanceof \TYPO3\CMS\Extbase\Property\Exception\TargetNotFoundException) || ($previousException instanceof \TYPO3\CMS\Extbase\Property\Exception\InvalidSourceException))) {
$GLOBALS['TSFE']->pageNotFoundAndExit($this->entityNotFoundMessage);
}
throw $exception;
}
}
/**
* @return void
* @override \TYPO3\CMS\Extbase\Mvc\Controller\ActionController
*/
protected function callActionMethod() {
try {
parent::callActionMethod();
}
catch(\Exception $exception) {
// This enables you to trigger the call of TYPO3s page-not-found handler by throwing \TYPO3\CMS\Core\Error\Http\PageNotFoundException
if ($exception instanceof \TYPO3\CMS\Core\Error\Http\PageNotFoundException) {
$GLOBALS['TSFE']->pageNotFoundAndExit($this->entityNotFoundMessage);
}
// $GLOBALS['TSFE']->pageNotFoundAndExit has not been called, so the exception is of unknown type.
\VendorName\ExtensionName\Logger\ExceptionLogger::log($exception, $this->request->getControllerExtensionKey(), \VendorName\ExtensionName\Logger\ExceptionLogger::SEVERITY_FATAL_ERROR);
// If the plugin is configured to do so, we call the page-unavailable handler.
if (isset($this->settings['usePageUnavailableHandler']) && $this->settings['usePageUnavailableHandler']) {
$GLOBALS['TSFE']->pageUnavailableAndExit($this->unknownErrorMessage, 'HTTP/1.1 500 Internal Server Error');
}
// Else we append the error message to the response. This causes the error message to be displayed inside the normal page layout. WARNING: the plugins output may gets cached.
if ($this->response instanceof \TYPO3\CMS\Extbase\Mvc\Web\Response) {
$this->response->setStatus(500);
}
$this->response->appendContent($this->unknownErrorMessage);
}
}
}
这是一篇解释这一点的文章。 但是大多数关于TYPO3编程的文章都是用德语写的; - )
答案 1 :(得分:1)
您暗中问了两个问题:
我认为这是正确的:您只需使用PHP \ Exception或从\ Exception继承的适当异常即可:
throw new \UnexpectedValueException('Invalid data');
这已经得到很好的回答:https://stackoverflow.com/a/34067853/2444812
config.contentObjectExceptionHandler = 0
请参见Error and ExceptionHandling Example
您通常不希望在前端看到完整的堆栈跟踪。这就是为什么config.contentObjectExceptionHandler
通常设置为默认值(仅显示 Oops,发生错误!)的原因!呈现页面上的代码:20160721101726b5339896 。但是,使用此代码,您可以查看日志: