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Recover ArrayForm in Action

Posts: 20
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Hello, i have searched this question in Search utility but i didn�t found the solution. In a jsp page, i have a variable form. Sorry for my english. Part of code is:

----Action that recover information for modify in a jsp page----


----Jsp Page----

<html:form action="">

<logic:iterate id="datos" name="listaejercicios">
<html:text name="datos" property="tiempoteorico" indexed="true"/>

The jsp page work fine and each property shows it value. One example is two exercises like:

<input type="text" name="datos[0].tiempoteorico" value="25">
<input type="text" name="datos[1].tiempoteorico" value="30">

I don�t know how many exercises there is so my form is:


public class ListaControlForm extends ValidatorForm{

private ControlForm[] listacontrol;

public ListaControlForm(){
listacontrol = new ControlForm[0];

public void setListacontrol(ControlForm[] listacontrol){
this.listacontrol = listacontrol;

public void setListacontrol(int index,ControlForm listacontrol){
this.listacontrol[index] = listacontrol;

public ControlForm[] getListacontrol(){
return listacontrol;

public ControlForm getListacontrol(int index){
return listacontrol[index];

public void reset(ActionMapping mapping, HttpServletRequest request){
this.listacontrol = new ControlForm[0];

public class ControlForm{

private String tiempoteorico;

public ControlForm(){
tiempoteorico = null;

public void setTiempoteorico(String tiempoteorico){
this.tiempoteorico = tiempoteorico;

public String getTiempoteorico(){
return tiempoteorico;

I�d like in Action recover all values for storing in DB but i don�t know this issue.

---My Action---

ListaControlForm listacontrol = (ListaControlForm) form;

for (int i=0; i<listacontrol.length(); i++){
//shows an error :length cannot be resolved or is not a field

I think this error is due to i have to create one method in ListaControlForm like as:

public int Longitudlistacontrol(){
return listacontrol.length;

but if i put in Action:
ListaControlForm listacontrol = (ListaControlForm) form;
int tamano = listacontrol.getLongitudlistacontrol();

shows an error again.

Anyone can help me? or any idea?
Manuel Sanchez Iba�ez
Posts: 20
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I continue with my problem. I have readed about DynaActionForm and DynaValidatorForm. I think my problem will be resolved with this option but my tests don�t work.

I hope explain clearly (my english is bad). I want show in a jsp form a unknown numbers of Objects:


In a Jsp page:

My jsp page shows a good information:
<input type="text" name="controles[0].tiempoteorico" value="25">
<input type="text" name="controles[1].tiempoteorico" value="30">

According to information, i declare this in struts-config.xml:

So, the user can update/modify that values and when it submitted the form, i want recover all values.

My Action:

This Action cause an error:
javax.servlet.ServletException: BeanUtils.populate

causa ra�z
java.lang.reflect.Array.get(Native Method)

Any idea will be grateful.
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