I can't see SAPMLogonLogic.java modification

Question

Hi all,
I need to redirect the portal to another jsp after click on logon button.
So I need to modify SAPMLogonLogic under jar file umelogonbase.jar.
I try this way:
1) Unzip par file from portal
2) Unzip umelogon.jar from PORTAL-INF/lib
3) Create JavaProject on NWDS with all file .java under correct path com.sap.security.core.sapmimp.logon and com.sap.security.core.logonadmin
4) Add all necessary library to correct error
5) Modify file SAPMLogonLogic.java (I add new method)
6) Rebuild project
7) Then I overwrite new .class file to umelogonbase.jar and add this jar file to initial par
8) Upload new par from Support Desk
After upload I can't see the modification.
From umLogonPage on Logon Button I call the new method  where I put only this line of code:
"this.proxy.gotoPage(changePasswordPage);" but the redirect doesn't work and user can access to Portal normally.
Any idea???
Thanks in advance.
Federica.

Answer 1

I had the same situation. You get blank screen if you have (some specific)exceptions thrown in your code. My suggestion is to encapsulate your jsp code in try catch block and manually print out the exceptions on to jsp page using out.println() statement.
hope this helps.
Santhosh
Message was edited by: Santhosh Kumar