Get the http request parameters in Liferay from the freemarker web content template

liferay-web-content-request-parameters.ftl

<#--
	The request here is not the original request and doesn't contain the url query parameters 
	hence the usage of the serviceContext from ServiceContextThreadLocal.
-->

<#assign serviceContext = staticUtil["com.liferay.portal.service.ServiceContextThreadLocal"].getServiceContext()>
<#assign httpServletRequest = serviceContext.getRequest()>
myparam="${(httpServletRequest.getParameter('myparam')?html)!''}"

liferay-web-content-request-query.ftl

<#--
       The request here is not the original request and doesn't contain the url query parameters hence the url parsing.
-->
<#assign url = request.attributes['CURRENT_URL']>
myparam = ${httpUtil.getParameter(url, "myparam", false)}

Very nice man