Impersonate User script to run in Liferay 6.2 Script Console

impersonate.groovy

import  com.liferay.portal.util.PortalUtil;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.util.Encryptor;
import javax.servlet.http.HttpServletRequest;

String key = "23410447";
String uid = "";
ThemeDisplay themeDisplay = null;
HttpServletRequest request = null;

try {
	request = PortalUtil.getHttpServletRequest(actionRequest);
	themeDisplay = (ThemeDisplay) request.getAttribute("themeDisplay");
	uid = Encryptor.encrypt(PortalUtil.getCompany(request).getKeyObj(), key);
	themeDisplay.setDoAsUserId(uid);
} catch (Exception e) {
    e.printStackTrace();
}