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From Alexander Hartner <>
Subject Using JSF Converter to handle NULL values for empty Strings ""
Date Sun, 19 Oct 2008 21:34:01 GMT
I am using a JSF convert to convert empty string submitted to null  
values. I am able to see the converter doing it's thing and returning  
null as expected, however the controller is not updated with a null  
value, but an empty string instead. I then had a dig around online for  
the cause of the problem and found the problem to be related to the  
version of tomcat being used:

I came accross this post online :

and then tried 6.0.18 and 6.0.14. Previously I was using 6.0.16. The  
problem indeed does not appear in 6.0.14, however both 6.0.16 and 18  
are affected by it.

I found some other posts on this issue as well : and

I wonder what has changed, and how I can fix this

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