如何轻松调试布局Xml警告/错误？ [英] How to easily Debug Layout Xml Warning/Error?

问题描述

我遇到这个错误：

Warning: simplexml_load_string(): Entity: line 46: parser error : Comment not terminated  in */lib/Varien/Simplexml/Config.php on line 510

和

Entity: line 46: parser error : Start tag expected, '<' not found  in */lib/Varien/Simplexml/Config.php on line 510

很明显，在一些Xml文件中有一个问题，但真的没有容易让我在大干草堆中找到针：）

It is clear that there is an issue in some Xml file, but really not easy for me to find out the needle in the big haystack :)

有什么好的做法吗？
如果可能，我想找到一个很好的做法，涉及使用Xdebug或一些日志。

Any good practice for that? If possible I would like to find a good practice that involves use Xdebug, or some log.

在Magento做了一些错误发生了很多时间拼写。

It happens a lot of time in Magento to do some miss spelling.

推荐答案

我想你可以看看这篇文章处理XML错误。

I think you can take a look at this article Dealing with XML errors.

此警告与某些config.xml错误相关，所以一个可能的解决方法找出确切的文件是mod。 /lib/Varien/Simplexml/Config.php类。

This warning is related to some config.xml error, so a possible workaround to find out the exact file is to mod. the /lib/Varien/Simplexml/Config.php class.

您应该修改 Varien_Simplexml_Config :: loadString（）方法：

    public function loadString($string)
    {
        if (is_string($string)) {
            // Enable internal errors
            libxml_use_internal_errors(true);
            $xml = simplexml_load_string($string, $this->_elementClass);
            if (false === $xml) {
                // Put breakpoint here
                $errors = libxml_get_errors();
            }
            if ($xml instanceof Varien_Simplexml_Element) {
                $this->_xml = $xml;
                return true;
            }
        } else {
            Mage::logException(new Exception('"$string" parameter for simplexml_load_string is not a string'));
        }
        return false;
    }

如果错误与某些布局文件相关（Update.php line 444警告）

In case the error is related to some Layout file ( Update.php line 444 warning )

您应该以类似的方式修改 Mage_Core_Model_Layout_Update :: getFileLayoutUpdatesXml（）方法：

You should modify Mage_Core_Model_Layout_Update::getFileLayoutUpdatesXml() method in a similar way:

  public function getFileLayoutUpdatesXml($area, $package, $theme, $storeId = null)
{
    if (null === $storeId) {
        $storeId = Mage::app()->getStore()->getId();
    }
    /* @var $design Mage_Core_Model_Design_Package */
    $design = Mage::getSingleton('core/design_package');
    $layoutXml = null;
    $elementClass = $this->getElementClass();
    $updatesRoot = Mage::app()->getConfig()->getNode($area.'/layout/updates');
    Mage::dispatchEvent('core_layout_update_updates_get_after', array('updates' => $updatesRoot));
    $updateFiles = array();
    foreach ($updatesRoot->children() as $updateNode) {
        if ($updateNode->file) {
            $module = $updateNode->getAttribute('module');
            if ($module && Mage::getStoreConfigFlag('advanced/modules_disable_output/' . $module, $storeId)) {
                continue;
            }
            $updateFiles[] = (string)$updateNode->file;
        }
    }
    // custom local layout updates file - load always last
    $updateFiles[] = 'local.xml';
    $layoutStr = '';
    foreach ($updateFiles as $file) {
        $filename = $design->getLayoutFilename($file, array(
            '_area'    => $area,
            '_package' => $package,
            '_theme'   => $theme
        ));
        if (!is_readable($filename)) {
            continue;
        }
        $fileStr = file_get_contents($filename);
        $fileStr = str_replace($this->_subst['from'], $this->_subst['to'], $fileStr);   


        libxml_use_internal_errors(true);
        $fileXml = simplexml_load_string($fileStr, $elementClass);


        if (false === $fileXml) {
            // Put breakpoint here
            $errors = libxml_get_errors();
            $err = array($filename, $errors);
            // error detail and file name will be printed
            Zend_Debug::dump($err);
            die();
        }



        if (!$fileXml instanceof SimpleXMLElement) {
            continue;
        }
        $layoutStr .= $fileXml->innerXml();
    }
    $layoutXml = simplexml_load_string('<layouts>'.$layoutStr.'</layouts>', $elementClass);
    return $layoutXml;
}

现在只需重新加载页面即可阅读错误信息。

Now just reload the page a read the error info.

这篇关于如何轻松调试布局Xml警告/错误？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！