Problem: logic:notEqual does not work with null values

[leonard_reinstein]

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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