为您的magento自定义模块按照以下步骤1)为图像占位符,您可以创建文件夹

  media/mymodule/placeholder/placeholderImage.jpg

2) 重写 model Class

 Mage_Catalog_Model_Product_Image

3) 更新方法

  public function setBaseFile($file)

Line around at 304

$baseFile = $baseDir . $file;

        if ((!$file) || (!file_exists($baseFile))) {
            throw new Exception(Mage::helper('catalog')->__('Image file was not found.'));
        }

替换为

$baseFile = $baseDir . $file;

    if ((!$file) || (!file_exists($baseFile))) {
        $module = $this->getRequest()->getModuleName();
        if($module=='mymodule'){
          $baseFile = Mage::getBaseUrl('media').'mymodule/placeholder/placeholderImage.jpg';
        }else{
          throw new Exception(Mage::helper('catalog')->__('Image file was not found.'));
        }
    }