A few years ago I wrote my own validator which checked whether the
listbox had at least one
thing selected. Below is the validator
(http://javaboutique.internet.com/tutorials/Struts11Val/index-14.html)
helped me get going. Also below is a validator-rules-custom.xml that
needs to be added to the struts config
like so;
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,
/WEB-INF/validator-rules-custom.xml"/>
</plug-in>
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.ValidatorAction;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.validator.Resources;
public class MultilistValidator {
private static final Log log =
LogFactory.getLog(MultilistValidator.class);
public static boolean validateRequiredMultilist(Object bean,
ValidatorAction va, Field field, ActionMessages errors,
HttpServletRequest request) {
try {
String[] s = (String[]) PropertyUtils.getProperty(bean,
field.getProperty());
if ((s == null) || (s.length == 0)) {
errors.add(field.getKey(),
Resources.getActionMessage(request,va, field));
return false;
}
} catch (Exception ex) {
log.fatal(ex, ex);
errors.add(field.getKey(),
Resources.getActionMessage(request, va, field));
return false;
}
return true;
}
}
<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules
Configuration 1.2.0//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_2_0.dtd";>
<form-validation>
<global>
<!-- added by mas see
http://javaboutique.internet.com/tutorials/Struts11Val/index-14.html -->
<validator name="requiredmultilist"
classname="org.ycmi.validators.MultilistValidator"
method="validateRequiredMultilist"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionMessages,
javax.servlet.http.HttpServletRequest"
msg="errors.multilist">
</validator>
</global>
</form-validation>
Sahil Gupta wrote:
Hi,
Thanks a lot
Can I do put the validation with the help of validation.xml to a String[]
Regards,
Sahil Gupta
-----Original Message-----
From: Strachan, Paul [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 21, 2006 6:11 PM
To: Struts Users Mailing List
Subject: RE: Validation on String[]
<form-property name="locations" type="java.util.ArrayList"/>
<field property="locationName" indexedListProperty="locations"
depends="required">
<arg key="Location" resource="false"/>
</field>
in your action class:
ArrayList list = new ArrayList();
Location location = new Location();
location.setLocationName("A Location");
list.add(location);
dyForm.set("locations", list);
I'm not sure how to validate a simple array of strings (eg
java.lang.String[]) as the property attribute is required by the validator.
________________________________
From: Sahil Gupta [mailto:[EMAIL PROTECTED]
Sent: Thu 21/09/2006 8:40 PM
To: 'Struts Users Mailing List'
Subject: RE: Validation on String[]
Hi,
How can we use List or ArrayList in DynaValidator Forms?
Regards,
Sahil Gupta
-----Original Message-----
From: Li [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 21, 2006 3:57 PM
To: Struts Users Mailing List
Subject: Re: Validation on String[]
hi,
there is no such type : java.lang.String[], try to use List or ArrayList
On 9/21/06, Sahil Gupta <[EMAIL PROTECTED]> wrote:
Hi,
I have used a dyna form in which I have a property which is a
multi-select pick list defined as
form-property name="location" type="java.lang.String[]
Now I want to put validation (required and/or mask) on this. Can
anyone please guide me. I want it to show an error if the user clicks
on submit button without selecting anything in the picklist. I have
handled this validation in my Action but I want to do this through
validation.xml
Regards,
Sahil Gupta
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