Question

JSP not accessing inner class attributes

Asked by: softechnics

I'm getting an error trying to access class attributes passed from my java class to my jsp page. Here's what I'm doing. Do you see the error of my ways?

Briefly, in Java Class 'TransferService':

public class TransferService
{
      private ArrayList<HistoryLineItem> historyList;

      public final ArrayList<HistoryLineItem> getAllItemsScanned(

            <Query several TransferCount records, then loop through them>

            ArrayList historyList = new ArrayList<HistoryLineItem>();

            for (TransferCount transferCount : q) {

                  HistoryLineItem hli = new HistoryLineItem();
                              
                  hli.transferCountId = transferCount.getTransferCountId();
                  hli.productNum = transferCount.getProductNum();
                  hli.seq = transferCount.getSeq();
                  hli.qty = transferCount.getQty();

                  historyList.add (hli);
            }

            return this.historyList;
      }

      public final class HistoryLineItem {
            
            public int transferCountId;
            public String productNum;
            public BigDecimal qty;
            public short seq;
      }
}


In my JSP, keeping it simple:


      <c:forEach var="thisItem" items="${scannedHistoryList}" varStatus="row">
            <srps:Control TargetName="TransferHistoryList[${row.index}][1]" Text="${thisItem.qty}" />
      </c:forEach>


When executed, I get the following runtime error:


SEVERE: Servlet.service() for servlet SoftRetailMobileServer threw exception
javax.el.PropertyNotFoundException: Property 'qty' not found on type com.softechnics.softretail.common.TransferService$HistoryLineItem

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Asked On
2009-07-21 at 14:39:06ID24589153
Topics

J2EE

,

Java Server Pages (JSP)

,

Java Standard Tag Library (JSTL) & Server Tags

Participating Experts
2
Points
500
Comments
4

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Answers

 

by: rrz@871311Posted on 2009-07-21 at 18:23:09ID: 24910794

Does the HistoryLineItem class have a getter method ?

public BigDecimal getQty(){
                                            return qty;
}

 

by: ioantonPosted on 2009-07-22 at 03:57:27ID: 24913231

I suggest to make the properties of the class HistoryLineItem private and provide getters and setters for each of them. (see JavaBeans specification)

 

by: softechnicsPosted on 2009-07-22 at 05:12:01ID: 24913768

I already tried both of those approaches. The result was the same

I'll redo them.

 

by: softechnicsPosted on 2009-07-22 at 05:27:58ID: 31606152

Don't know what happened, but when I put the getter/setters back in, it now works. I might have made the getters/setters 'protected' before. Now they are 'public'. I believe that's the only difference.

20120131-EE-VQP-002

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