Hello,
I have read in the
struts documentation about 2 validators required and requiredstring.
The required validator checks whether a field value is null.
The requiredstring validator checks whether a field value is null and also whether the field value is empty.
So the required validator will not find any error if a blank value is passed as the field value but requiredstring validator will not allow blank value to be submitted.
I have the following doubt: If the required validator is anyway going to allow blank values to be submitted what is the use of this validator? Suppose I have a field named userName where the required validation is carried out.
<field name="userName">
<field-validator type="required">
<param name="trim">true</param>
<message>Username must not be null</message>
</field-validator>
</field>
Under what circumstances will I get an error message?
Regards,
John
