Magento安装后无法访问

Magento安装后无法访问，提示“Illegal scheme supplied, only alphanumeric characters are permitted”，找到magento\app\code\core\Mage\Core\Model\Store.php,修改下面代码

   /**
    * Check if request was secure
    *
    * @return boolean
    */
   public function isCurrentlySecure()
   {
       $standardRule = !empty($_SERVER['HTTPS']) && ('off' != $_SERVER['HTTPS']);
       $offloaderHeader = trim((string) Mage::getConfig()->getNode(self::XML_PATH_OFFLOADER_HEADER, 'default'));


       if ((!empty($offloaderHeader) && !empty($_SERVER[$offloaderHeader])) || $standardRule) {
           return true;
       }


       if (Mage::isInstalled()) {
           $secureBaseUrl = '';
           if (!$this->isAdmin()) {
               $secureBaseUrl = Mage::getStoreConfig(Mage_Core_Model_Url::XML_PATH_SECURE_URL);
           } else {
               $secureBaseUrl = (string) Mage::getConfig()
                   ->getNode(Mage_Core_Model_Url::XML_PATH_SECURE_URL, 'default');
           }


           if (!$secureBaseUrl) {
               return false;
           }
$url_this = 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];//$secureBaseUrl updated by samzheng
           $uri = Zend_Uri::factory($url_this);//$secureBaseUrl updated by samzheng
           $port = $uri->getPort();
           $isSecure = ($uri->getScheme() == 'https')
               && isset($_SERVER['SERVER_PORT'])
               && ($port == $_SERVER['SERVER_PORT']);
           return $isSecure;
       } else {
           $isSecure = isset($_SERVER['SERVER_PORT']) && (443 == $_SERVER['SERVER_PORT']);
           return $isSecure;
       }
   }