如何将 joomla 2.5 插件转换为 3

how to convert a joomla 2.5 plugin to 3

我有一个 joomla 2.5 的插件 我想在 joomla 3 中安装它,但安装后我看到这个错误:

Fatal error: Call to undefined method JController::getInstance() in /home/xxx/public_html/administrator/components/xxx/xxx.php on line 21

错误行:

// Require specific controller if requested
if($controller = JRequest::getCmd('controller'))
{
    $path = JPATH_COMPONENT.DS.'controllers'.DS.$controller.'.php';

    if(file_exists($path))
    {
        require_once $path;
    }
    else
    {
        $controller = '';
    }
}

JController::getInstance() 已被删除。请改用 JControllerLegacy::getInstance()