How can I get the current user in Liferay?

Question

How can I get the current user connected to a Liferay portal with a simple Java code?

I'm using Liferay 6.0.6

Answer 1

Simply:

User currentUser = PortalUtil.getUser(request);

Answer 2

In your doView/processAction method do following

User user = (User) request.getAttribute(WebKeys.USER);

or use the ThemeDisplay object. It contains another information like companyId, groupId, ...

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

Classes ThemeDisplay, User and WebKeys are part of portal-service.jar.

If you need just some id to identify current user you can also use

String userId = request.getRemoteUser();

This solution is not Liferay specific and should be portable among jsr-286 portals.

Source: Get the current user Liferay using a simple Java code

Answer 3

In Java Code:

• UserLocalServiceUtil.getXXX methods are there, choose as you want.

In JSP Code:

• themeDisplay.getUserId() will give you the current user id
• themeDisplay.getUser() will give you the object of current User.