如何在 Zend Framework 操作中捕获我自己的模型异常

Question

我有一个抛出 XMLDocument_Exception 的模型。在我的控制器操作中，我想包含一个 try catch 块，它可能会抛出此异常，但由于某种原因它没有被捕获。

public function listissuesAction() {
    $publicationPid  = $this->_request->get('publicationPid');
    $this->getFrontController()->throwExceptions(true);
    try {
        $fedoraPublication = new FedoraMETSPublication($publicationPid);
    } catch (XMLDocument_Exception $e) {
        return $this->_forward('content/unavailable');
    }
}

并且模型抛出异常，如下所示：

if ($mets) {
    $this->loadXML($mets);
} else {
    throw new XMLDocument_Exception('Failed to load METS Document from SOAP Server');
}   

FedoraMETSPublication 扩展了 FedoraMETS，后者扩展了 XMLDocument。上面的代码位于 FedoraMETS 构造函数的构造函数中。

我看到以下错误：

Fatal error:  Uncaught exception 'XMLDocument_Exception' with message 'Failed to load METS Document from SOAP Server' in    2 /Users/dof/Sites/ccymod/trunk/application/models/Fedora/METS.php:21
Stack trace:
#0 /Users/dof/Sites/ccymod/trunk/application/models/Fedora/METS/Issue.php(16): FedoraMETS->__construct('llgc-id:1183037')
#1 /Users/dof/Sites/ccymod/trunk/application/models/Fedora/METS/Publication.php(44): FedoraMETSIssue->__construct('llgc-id:1183037')
#2 /Users/dof/Sites/ccymod/trunk/application/views/scripts/browse/listissues.phtml(19): FedoraMETSPublication->getIssues()
#3 /Users/dof/Sites/ccymod/trunk/lib/Zend/View.php(108): include('/Users/dof/Site...')
#4 /Users/dof/Sites/ccymod/trunk/lib/Zend/View/Abstract.php(831): Zend_View->_run('/Users/dof/Site...')
#5 /Users/dof/Sites/ccymod/trunk/lib/Zend/Controller/Action/Helper/ViewRenderer.php(903): Zend_View_Abstract->render('browse/listissu...')
#6 /Users/dof/Sites/ccymod/trunk/lib/Zend/Controller/Action/Helper/ViewRenderer.php(924): Zend_Controller_Action_Helper_ViewRend in /Users/dof/Sites/ccymod/trunk/application/models/Fedora/METS.php on line 21

为什么我没有在操作控制器中捕获此异常？

Answer 1

检查堆栈跟踪，#2：

#2 /Users/dof/Sites/ccymod/trunk/application/views/scripts/browse/listissues.phtml(19): FedoraMETSPublication->getIssues()

显然，异常被抛出到视图，而不是控制器。在视图中使用 try...catch （或更改您的方法）。