Struts / tags usage...

Subject: Struts <select>/<options> tags usage...
From: "Scott Curtis" <sc...@smart421.com>
 ===
Hi,

I have a JSP with the following scriplet:

<%
  // Set up the server names list
  ServerNamesForm form =
(ServerNamesForm)request.getAttribute("serverNamesForm");
  ArrayList list = form.getServerNames();
  pageContext.setAttribute("serverNames", list);
%>

The List list contains a collection of beans with value/labelProperty values
in them. This code sets the list collection as an attribute of the
pageContext, ready for use in the following code:

<html:select name="serverNamesForm" property="theServerName">
    <html:options collection="serverNames" property="value"
labelProperty="label" />
</html:select>

This works fine when simply loading the page. I then want the user to select
an option from the displayed combo box and click a button whose action maps
to anAction.do and subsequently an Action class that uses the selected
values (hopefully now stored in the ServerNamesForm). The button looks like
the following:

<input type="button" name="submit" value="Submit"
onclick="javascript:location='./anAction.do';"/>

Unfortunately when I click the button I get the following error message:

javax.servlet.jsp.JspException: Cannot find bean under name serverNames
    at
org.apache.struts.taglib.html.OptionsTag.getIterator(OptionsTag.java:343)
    at
org.apache.struts.taglib.html.OptionsTag.doEndTag(OptionsTag.java:194)
    at /serverNames.jsp._jspService(/serverNames.jsp.java:327)

I don't understand this as the page loads therefore the bean serverNames is
clearly found. I am not sure what could be the problem with it?

If that makes any sense and anyone can help I would be extremely grateful.

Thanks
 - scott





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