Liferay Portlet中獲取URL參數

在Liferay中，不能直接從Request中獲取參數，你能夠經過以下代碼來獲取參數：

分別有如下幾種狀況：

In JSP:
String paramValue = PortalUtil.getOriginalServletRequest(request).getParameter("paramName");

In render() :

HttpServletRequest request = PortalUtil.getHttpServletRequest(renderRequest);
String paramValue = PortalUtil.getOriginalServletRequest(request).getParameter("paramName");

In processAction() :

HttpServletRequest request = PortalUtil.getHttpServletRequest(actionRequest);
String paramValue = PortalUtil.getOriginalServletRequest(request).getParameter("paramName");