如果从Category产品列表中进入Product，则面包屑导航中含有Category Path; 否则，当从首页，或搜索结果中，或者其他什么地方进入，则缺少之。我想，可能是Magento支持一个产品放入多个Category的缘故吧。Magento产品页面包屑导航(Breadcrumb)修正不管怎么样，产品页中缺少了Category Path，用户体验不大好。

修正的方法，找到文件

app/code/core/Mage/Catalog/Helper/Data.php

　　复制一份到local代码池

view sourceprint?1 app/code/local/Mage/Catalog/Helper/Data.php

　　在函数getBreadcrumbPath的开始部分，加上如下的代码逻辑

public function getBreadcrumbPath(){if ($this->getProduct() && !$this->getCategory()) { $_categoryIds = $this->getProduct()->getCategoryIds(); if ($_categoryId = $_categoryIds[0]) { $_category = Mage::getModel('catalog/category')->load($_categoryId); Mage::register('current_category', $_category); } } if (!$this->_categoryPath) {$path = array();if ($category = $this->getCategory()) {$pathInStore = $category->getPathInStore();$pathIds = array_reverse(explode(',', $pathInStore));$categories = $category->getParentCategories();// add category path breadcrumbforeach ($pathIds as $categoryId) {if (isset($categories[$categoryId]) && $categories[$categoryId]->getName()) {$path['category'.$categoryId] = array('label' => $categories[$categoryId]->getName(),'link' => $this->_isCategoryLink($categoryId) ? $categories[$categoryId]->getUrl() : '');}}}if ($this->getProduct()) {$path['product'] = array('label'=>$this->getProduct()->getName());}$this->_categoryPath = $path;}return $this->_categoryPath;}