Help in Debugging

Hi All,
Im trying to develop a Struts 2 web app, however when i run the code i get the following error.

Mar 25, 2011 5:48:58 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
tag 'select', field 'list', name 'domainBean.domainTypeOid': The requested list key 'dtList' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]
at org.apache.struts2.components.Component.fieldError(Component.java:231)
at org.apache.struts2.components.Component.findValue(Component.java:293)
at org.apache.struts2.components.ListUIBean.evaluateExtraParams(ListUIBean.java:79)
at org.apache.struts2.components.Select.evaluateExtraParams(Select.java:99)
at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:780)
at org.apache.struts2.components.UIBean.end(UIBean.java:481)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:43)
at org.apache.jsp.jsp.interface_jsp._jspx_meth_s_005fselect_005f0(interface_jsp.java:376)
at org.apache.jsp.jsp.interface_jsp._jspx_meth_s_005fform_005f0(interface_jsp.java:267)......

The jsp associated with the web - app is placed below.Any pointers on where im going wrong would be very helpful.

<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
	<head>
    <title>Domain Master</title>
	
	<link href="<s:url value="/css/wss.css"/>" rel="stylesheet" type="text/css"/></head>
	<script language="JavaScript">
    function function1(a) {
    	
		alert(a.options[a.selectedIndex].value);
	
    } 
</script>
 	</head>
 	
	<body>
	
		  
	  
	  
	  <TABLE width="100%" height="100%" border="1" cellspacing="0"
	cellpadding="0">
	<TR>
		<TD height="75" class="header"><%@ include file="/jsp/header.jsp"%>
		</TD>
	</TR>
	<TR>
		<TD height="30" class="menu"><%@ include file="/jsp/Menu.jsp"%>

</TD>
	</TR>
	
	<TR>
		<TD class="content" valign="top">
		<TABLE class="DocMasterBodyTable">
	
	
			 <s:form id="frmDomain" action="addupDomain" method="post">
			 <input type="hidden" name="objid"  value="<s:property value="objid"/>"/>
	 		
	  
	 <TR class="odd">
				<TD class="cssLabel">DomainType</TD>
				<TD class="cssComboBox">	
		
		 <s:select 
        headerKey="-1" headerValue="--Select--"
        list="dtList" 
        listValue="description"
        listKey="objid"
        name="domainBean.domainTypeOid" onchange="function1(this)"
         />

<TR class="even">
				<TD class="cssLabel">Code</TD>
				<TD class="cssComboBox">
					<s:textfield name="domainBean.code" > </s:textfield>
				</TD>
				
				<TD></TD>
				<TD class="cssLabel">Description</TD>
				<TD class="cssComboBox"><s:textfield name="domainBean.description"></s:textfield>
			</TR>
	
	<TR class="odd">
				<TD class="cssLabel">Active</TD>
				<TD><s:checkbox name="domainBean.active" ></s:checkbox></TD>
				<TD></TD>
				<TD class="cssLabel">Editable</TD>
				<TD><s:checkbox name="domainBean.edit" ></s:checkbox></TD>
			</TR>
	<TR class="even">
				<TD colspan="5" align="right"><s:submit/>
				<s:reset label="Clear"></s:reset>	</TD>

</TR>
	
	
	
	</s:form>
	
</TABLE>
<s:if test="domList != null && list.size > 0"> 
 				  			<TABLE class="DocMasterFooterTable" width="75%" border="1">
			<TR>

<TD>Code</TD>
				<TD>Description</TD>
				<TD>IsActive?</TD>
				<TD>IsEditable?</TD>

</TR>

</TABLE>
 
 
     <s:iterator value="domList" >  
        <s:property value="code"/>  
        <s:property value="description"/>  
        <s:property value="active"/>  
        <s:property value="edit"/>  
    
    	<a href>="<s:url action="obtainData" > <s:param name="objid" value="%{objid}" ></s:param>  </s:url>"
    		<td><input type="submit" value="Audit Trail"/></td>
    	</a>
    	</TD>
    	
    	
    	    </s:iterator>

</s:if>
     
      
      
      <TR>
		
		<TD class="footer"><%@ include file="/jsp/footer.jsp"%>

</TD>
	</TR>
</TABLE>
      
	</body>
	
</html>

Vic Hood wrote:
The requested list key 'dtList' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]

Where is Struts supposed to get dtList?

Joe Ess wrote:

Vic Hood wrote:
The requested list key 'dtList' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]

Where is Struts supposed to get dtList?

Hi Joe,
Thanks for replying .
If im not mistaken as im new to struts programming ,the dtlist is fetched from the action class.
The code for the same is placed below.

Do you have a getter method declared for dtList?

Thanks Joe!
Got that solved!It was an error in the html tags in the jsp , not rendering the list .Thanks for helping anyways!
But, I have another error that im facing now , that is being caused by the following fragment in the jsp

Here, I want to get a link that points to the obtainData action with objid being passed as a parameter with the label of 'Edit'.But now i get this --- in place of the link ---=" /Struts2DomMasBAck/obtainData.action?objid=2".. What am i missing here?Please help.