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integer (not mandatory) field validation

Maverick Schueler
Greenhorn

Joined: Jun 18, 2013
Posts: 5
Spring MVC 3

I have a form with an integer form bean field (e.g. phoneNumber). This field is not mandatory. but I need to have it only digits (e.g. 0111234567890)
But whenever I keep the field blank, Spring treats it as String and throws exception.

Is there any way we can achieve this?
James Boswell
Bartender

Joined: Nov 09, 2011
Posts: 1024
    
    5

How about annotating your phone number field as follows:

Obviously you can replace the max length 8 to suit your needs.
 
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subject: integer (not mandatory) field validation