Embed Webcontent using Title using Freemarker template in liferay dxp

<#assign VOID = freeMarkerPortletPreferences.setValue("portletSetupPortletDecoratorId", "barebone") />

<#assign theme_groupID = htmlUtil.escape(theme_display.getCompanyGroupId()?string) />

<#assign VOID = freeMarkerPortletPreferences.setValue("groupId", '${group_id}') />

<#assign journalArticleLocalService =          serviceLocator.findService("com.liferay.journal.service.JournalArticleLocalService") />

<#assign footercontentarticle = journalArticleLocalService.getArticleByUrlTitle(group_id,"footercontent")/>

<#assign VOID = freeMarkerPortletPreferences.setValue("articleId", footercontentarticle.getArticleId()) />

        <@liferay_portlet["runtime"]

        defaultPreferences="${freeMarkerPortletPreferences}"

        portletProviderAction=portletProviderAction.VIEW

        instanceId="footercontent"

        portletName="com_liferay_journal_content_web_portlet_JournalContentPortlet" />

        ${freeMarkerPortletPreferences.reset()}

Setting ===>

  For embedding WebContent in Liferay 7, first of all, you have to enable serviceLocator in Control Panel -> Configuration -> System Settings -> Foundation -> FreeMarker Engine -> Restricted Variables. There you can remove serviceLocator

References 

1> https://stackoverflow.com/questions/38227528/how-to-embed-webcontent-in-freemarker-liferay-7-theme