validation: how to make int and double validations work ?

[boraldo <bo...@hotbox.ru>]

Say I want to validate field number.

This is a snippet from MyAction-validation.xml

    <field name="number">
        <field-validator type="int">
            <message>qwe</message>
        </field-validator>
    </field>

There are 2 cases.
1) If number is field of class String then this validation doesn't work at
all
2) If number is field of type int then this validation doesn't work also,
but besides if I enter not a number then the following exception is thrown:

              java.lang.NoSuchMethodException:
setNumber([Ljava.lang.String;)

and instead of my text I see at the page:

              Invalid field value for field "number"

So, in both cases int validation doesn't work. The same for double
validator.
What to do ?
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