Liferay Portlet中获取URL参数

在Liferay中，不能直接从Request中获取参数，你能够经过以下代码来获取参数：

分别有如下几种状况：

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");