Problem with Type-Conversion

[Andreas Dilli]

Hi,

i have a dynamic form that will be filled using a Form-Class with a list in a list. When i submit the form i wil get a java.lang.NoSuchMethodException while setting an integer field (setMbusScanMeasuringDeviceId([Ljava.lang.String;)]).
Here is the code:

public class MeasuringDeviceWizardAction extends BaseAction implements ModelDriven<MeasuringWizardForm>

...

    @Override
    public MeasuringWizardForm getModel() {
        return measuringWizardForm;
    }

    public MeasuringWizardForm getMeasuringWizardForm() {
        return measuringWizardForm;
    }

    public void setMeasuringWizardForm(MeasuringWizardForm measuringWizardForm) {
        this.measuringWizardForm = measuringWizardForm;
    }

public class MeasuringWizardForm {

    private List<MeasuringDeviceItem> measuringDevices;

    public MeasuringWizardForm() {
        measuringDevices = new ArrayList<MeasuringDeviceItem>();
    }

    public List<MeasuringDeviceItem> getMeasuringDevices() {
        return measuringDevices;
    }

    public void setMeasuringDevices(List<MeasuringDeviceItem> measuringDevices) {
        this.measuringDevices = measuringDevices;
    }
}

public class MeasuringDeviceItem {

    private Integer measuringDeviceId;
    private Integer mbusScanMeasuringDeviceId;
    private List<MeasuringPointItem> measuringPoints;

    public void setNewMeasuringDevice(boolean newMeasuringDevice) {
        this.newMeasuringDevice = newMeasuringDevice;
    }

    public Integer getMeasuringDeviceId() {
        return measuringDeviceId;
    }

    public void setMeasuringDeviceId(Integer measuringDeviceId) {
        this.measuringDeviceId = measuringDeviceId;
    }

    public Integer getMbusScanMeasuringDeviceId() {
        return mbusScanMeasuringDeviceId;
    }

    public List<MeasuringPointItem> getMeasuringPoints() {
        return measuringPoints;
    }

    public void setMeasuringPoints(List<MeasuringPointItem> measuringPoints) {
        this.measuringPoints = measuringPoints;
    }
}

public class MeasuringPointItem {
    private Integer measuringDeviceId;
    private Integer mbusScanMeasuringDeviceId;

    public void setNewMeasuringDevice(boolean newMeasuringDevice) {
        this.newMeasuringDevice = newMeasuringDevice;
    }

    public Integer getMeasuringDeviceId() {
        return measuringDeviceId;
    }

    public void setMeasuringDeviceId(Integer measuringDeviceId) {
        this.measuringDeviceId = measuringDeviceId;
    }

    public Integer getMbusScanMeasuringDeviceId() {
        return mbusScanMeasuringDeviceId;
    }
}

working jsp:

<s:iterator value="measuringDevices" status="deviceItem">
   <s:iterator value="measuringPoints" status="pointItem">
       <s:hidden name="measuringDevices[%{#deviceItem.index}].measuringPoints[%{#pointItem.index}].measuringDeviceId"></s:hidden>
       <s:hidden name="measuringDevices[%{#deviceItem.index}].measuringPoints[%{#pointItem.index}].mbusScanMeasuringDeviceId"></s:hidden>
    </s:iterator>
</s:iterator>

JSP that causes NoSuchMethodException:

<s:iterator value="measuringDevices" status="deviceItem">
   <s:iterator value="measuringPoints" status="pointItem">
       <s:hidden name="measuringDevices[%{#deviceItem.index}].measuringDeviceId"></s:hidden>
       <s:hidden name="measuringDevices[%{#deviceItem.index}].mbusScanMeasuringDeviceId"></s:hidden>
    </s:iterator>
</s:iterator>

I have no idea why the first jsp works an the second not.

can anyone help me?
thanks