On Oct 5, 8:03 pm, Daniel Pitts
<newsgroup.spamfil...@virtualinfinity.net> wrote:
Arne Vajh?j wrote:
Mongoose wrote:
Hi All,
For some reason I'm having trouble with displaying my list data with
the DisplayTag Library . . . I'm new to Struts (and the
DisplayTagLibrary) so hopefully it's something simple . . .
In my implementation class I have a method that uses Hibernate to get
some data from an Oracle Database. The List (in this case called
"results") is returned to the caller . . . which is a Struts Action.
The first part of this file is shown below as well . . .
public List getDefects( ) throws DatastoreException
{
List results = null;
List items = null;
Session session = null;
try
{
session = sessionFactory.openSession( );
Query q = session.createQuery("select DefectID, Description,
PriorityID from Defect");
results = q.list( );
session.close( );
}catch( Exception ex ){
ex.printStackTrace( );
throw DatastoreException.datastoreError(ex);
}
return results;
}
public class TestAction extends Action
{
public TestAction()
{
super();
}
public ActionForward execute (ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws
Exception
{
ActionErrors errors = new ActionErrors();
ActionForward forward = new ActionForward();
// return value
//SubmitForm submitForm = (SubmitForm) form;
try
{
System.out.println("Go Away");
EricEnhancementServiceImpl E = new
EricEnhancementServiceImpl();
List results = E.getDefects();
for (ListIterator iter = results.listIterator();
iter.hasNext
() ; )
{
Object[] row = (Object[])iter.next();
Integer id = (Integer)row[0];
String desc = (String)row[1];
Integer priorityid = (Integer)row[2];
}
request.setAttribute("stuff", results);
As you can see in the action the "results" list is stored in
session . . .
The .jsp where I'm just trying to display the results of the data that
is in my list is shown below:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><%@page
language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://displaytag.sf.net" prefix="display" %>
<%@ taglib uri="http://displaytag.sf.net/el" prefix="displayel" %>
<html:html>
<head>
<title>defect</title>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
</head>
<body>
<jsp:include page="strutsmenu.jsp"/>
<display:table name="stuff"/>
</body>
</html:html>
When I try to execute the Struts application I get the memory location
printed instead of the data (like this). As far as I know all .jar
file and .tld files are present.
[Ljava.lang.Object;@64c964c9
[Ljava.lang.Object;@64e164e1
[Ljava.lang.Object;@64f964f9
[Ljava.lang.Object;@650f650f
[Ljava.lang.Object;@65276527
[Ljava.lang.Object;@65406540
Can someone please tell me what I'm doing wrong . . .
Maybe your Defect class should have a toString method.
Arne
Even worse than that, the ooutput suggests an "Object[]" instance is the
actual object being printed. Perhaps dispaytag's documentation would
illuminate the proper usage.
You may have to transform your Object[] rows into actual Strings,
Objects, or (ick) Maps.
Hmmm, still haven't quite been able to overcome this issue . . . I
definitely have an ArrayList of Objects. Each object is an
instantiation of the class below:
public class Defect extends ActionForm
{
private Integer DefectID;
private String Description;
private Integer PriorityID;
public Integer getDefectID()
{
return DefectID;
}
public void setDefectID(Integer defectID)
{
DefectID = defectID;
}
public String getDescription()
{
return Description;
}
public void setDescription(String description)
{
Description = description;
}
public Integer getPriorityID()
{
return PriorityID;
}
public void setPriorityID(Integer priorityID)
{
PriorityID = priorityID;
}
}
So I have an arraylist of Defect Objects. However, when I try to
execute the following code in the .jsp
<display:table name="Defects" class="displaytable">
<display:column property="Description" />
</display:table>
I get: javax.servlet.ServletException:
javax.servlet.jsp.JspException: Error looking up property
"Description" in object type blah blah blah. And I know there is a
getDescription in there so I'm not sure here . . . still trying to
determine what I'm doing wrong . . .