how to obtain list object from an actionform

[krizel clemente]

Hi,

I'm having problem in getting the list object from the actionform.
It returns null value.

my actionform look likes this:

public class MyForm extends ActionForm implements Factory{
private String transactionNumber;
private String transactionLocation;
protected List customers = ListUtils.lazylist(new ArrayList(), this);
 
 
public Object create(){
  return new Customer();
}
 
public Customer getCustomers(int index){
  return (Customer) customers.get(index);
}
 
public void setTransactionNumber(String string){
this.transactionNumber = string;
}
 
public void setTransactionLocation(String string){
this.transactionLocation = string
}
 
public String getTransactionNumber(){
return this.transacttionNumber;
}
 
public String getTransactionLocation()
return this.transactionLocation
}
 
public void setCustomers(List list){
this.customers = list;
}
 
public List getCustomers(){
return this.customers;
}
 
}

my action class is looks like this:

 
public class myAction extends Action{
 
public ActionForward execute(ActionMapping mapping,
        ActionForm form,
        HttpServletRequest request,
        HttpServletResponse response)
        throws Exception{
MyForm myform = (MyForm) form;
System.out.println(form.getTransactionData);
System.out.println(form.getCustomers().size());
 
return mapping.findForward("success");
}
 
}

my customer bean:

public class Customer {
private String name;
private String customerId;
 
public void setName(String string){
this.name = string;
}
 
public void setCustomerId(String string){
this.customerId = string;
}
 
public String getName(){
return this.name;
}
 
public String getCustomerId(){
return this.customerId();
}
 
}
 

snippet of my struts-config.xml:

 
<form-beans>
<form-bean name="form1" type="package.MyForm" />
</form-beans>
 
<action-mappings>
<action path="/doProcess" name="form1" scope="request" type="package.MyAction">
<forward name="success" path="succes.jsp"/>
</action-mappings>

my jsp snippet is like this:

<logic:iterate scope="request" name="form1" property="customers" id="lst">
<html:text name="lst" property="name"/>
<html:text name="lst" property="customerId"/>
</logic:iterate>

scenario: bean customer is pre-populated and been able to display on the page.

problem, i would like to retrieve the form from the page and obtain the values, im able to get the transactionNumber and transactionLocation but when i obtain the list, it returns 0 as the size.

Is there anyone that can help me? i need to obtain the list object that has been populated.

[ July 23, 2007: Message edited by: krizel clemente ]
[ July 23, 2007: Message edited by: krizel clemente ]

[Merrill Higginson]

This question belongs in the Struts forum. I'm moving it there for you.

[Merrill Higginson]

The technique you're attempting to use is referred to as "indexed properties". If you check out question 6 of the JavaRanch Struts FAQ you'll find a lot of good information about this topic, as well as a working example.

Regarding your example, you're almost there. Just change your JSP as follows:

<logic:iterate scope="request" name="form1" property="customers" id="customers">
  <html:text name="customers" property="name" indexed="true"/>
  <html:text name="customers" property="customerId" indexed="true"/>
</logic:iterate>

The trick is that the id of your logic:iterate must have the same name as your indexed property, which in this case is customers.

Also, the setter in your ActionForm must be changed. It should look like this:

public void setCustomers(final List customers) {
this.customers = ListUtils.lazyList(customers, this);
}

[ July 23, 2007: Message edited by: Merrill Higginson ]

[krizel clemente]

hi,

your code works, thanks for the tip...