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Posted to user@struts.apache.org by le...@bankone.com on 2003/07/24 22:36:46 UTC
Problem: logic:notEqual does not work with null values
Hi!
I need to check if the certain String field in the bean is not null, then
I display certain elements in my JSP (running it on Websphere 4.0):
So, I do this check:
<logic:notEqual name="accountForm" property="postalCode" value="null">
do something
</logic:notEqual>
That does not work. The server gives me error, something like: "Null
attribute value"
or when I check for empty strings, I tried this:
<logic:notEqual name="accountForm" property="postalCode"
value="<%=""%>">
do something
</logic:notEqual>
Get server error: "Attribute has no value"
Then I tried this:
<logic:notEqual name="accountForm" property="postalCode" value="
<%=null%>">
do something
</logic:notEqual>
Does not work either. How can I make it work? How can I do this check
correctly? Are there any workarounds?
Thanks.
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RE: Problem: logic:notEqual does not work with null values
Posted by Alex Shneyderman <al...@law.columbia.edu>.
I think, you should use notEmpty to check for null
> -----Original Message-----
> From: leonard_reinstein@bankone.com
[mailto:leonard_reinstein@bankone.com]
> Sent: Thursday, July 24, 2003 4:37 PM
> To: struts-user@jakarta.apache.org
> Subject: Problem: logic:notEqual does not work with null values
>
>
> Hi!
>
> I need to check if the certain String field in the bean is not null,
then
> I display certain elements in my JSP (running it on Websphere 4.0):
>
> So, I do this check:
> <logic:notEqual name="accountForm" property="postalCode"
value="null">
> do something
> </logic:notEqual>
>
> That does not work. The server gives me error, something like: "Null
> attribute value"
>
> or when I check for empty strings, I tried this:
>
> <logic:notEqual name="accountForm" property="postalCode"
> value="<%=""%>">
> do something
> </logic:notEqual>
>
> Get server error: "Attribute has no value"
>
> Then I tried this:
>
> <logic:notEqual name="accountForm" property="postalCode" value="
> <%=null%>">
> do something
> </logic:notEqual>
>
>
> Does not work either. How can I make it work? How can I do this check
> correctly? Are there any workarounds?
>
> Thanks.
>
>
>
>
> This transmission may contain information that is privileged,
confidential
> and/or exempt from disclosure under applicable law. If you are not the
> intended recipient, you are hereby notified that any disclosure,
copying,
> distribution, or use of the information contained herein (including
any
> reliance thereon) is STRICTLY PROHIBITED. If you received this
> transmission in error, please immediately contact the sender and
destroy
> the material in its entirety, whether in electronic or hard copy
format.
> Thank you.
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: struts-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: struts-user-help@jakarta.apache.org
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