How to get Currently Logged In Portal User in SAP Web Dynpro for Java

Background

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The current user may be set on some context variables but it may be out-of-sync, e.g. user id of previously logged in other user, or inadventently updated by other components. The safer approach is to retrieve it straight from WDClientUser.

Software Environment

Windows 7 Professional SP1
Java 2 SDK 1.4.2 for Windows 32-bit
SAP NetWeaver Developer Studio Version 7.0.09 for Java
SAP NetWeaver Application Server
- sap.com/SAP-JEECOR – 7.00 SP26 (1000.7.00.26.1.20120307143343)
- sap.com/SAP-JEE – 7.00 SP26 (1000.7.00.26.0.20120109175405)

The Codes

String result = null;
IWDMessageManager manager = wdComponentAPI.getMessageManager();
try {
   IUser currentUser = WDClientUser.getCurrentUser().getSAPUser();
   String userId = currentUser.getUniqueName();
   result = userId;
} catch (WDUMException ue) {
   manager.reportException(ue.getMessage(), false);
}
//return result;