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jsfliferay

Not able to Get Liferay logged in UserId

I am trying to get liferay userId (I am using primefaces 6.2 in Liferay 7).

What I have tried so far is:

HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();

ThemeDisplay td  =(ThemeDisplay)request.getAttribute(WebKeys.THEME_DISPLAY);
long userId = td.getUserId();

I am getting the below error:

ERROR [stderr] (default task-49) java.lang.ClassCastException: com.liferay.faces.bridge.ext.filter.internal.ResourceRequestBridgeLiferayImpl cannot be cast to javax.servlet.http.HttpServletRequest

I have searched the problem, but not able to find out a working solution. Any help would be highly appreciated.

Thanks in advance.

I also tried using PortletRequest. Below is the code.

PortletRequest request = (PortletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();

ThemeDisplay td  =(ThemeDisplay)request.getAttribute(WebKeys.THEME_DISPLAY);
User user = td.getUser();

But now ThemeDisplacy class is not found

java.lang.NoClassDefFoundError: com/liferay/portal/theme/ThemeDisplay: javax.el.ELException: java.lang.NoClassDefFoundError: com/liferay/portal/theme/ThemeDisplay

I am not sure where i am missing.

Thanks

Solution

  • To fetch the Liferay User object, you could use the following snippet:

    FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
PortletRequest portletRequest = (PortletRequest) externalContext.getRequest();
User u = PortalUtil.getUser(portletRequest);

    Please also read this article about the return value of ExternalContext.getRequest() - this might be the reason of your cast error. The article further explains that: "the ExternalContext.getRequest() method returns an Object instead of an javax.servlet.http.HttpServletRequest. When this method is used in a portal, the Object can be cast to a javax.portlet.PortletRequest."