Is ArrayList a valid @ModelAttribute? How can I create a form that populates it?

Question

I'm having trouble getting this to work. I'll keep my code and idea generic since I've seen a few examples of people with similar problems:

The basic idea is that the view has a list of order items with properties that the user can modify inside a form. When the user submits the form, I want the order items populated with the data that the user submitted.

How do I create the HTML form that populates this @ModelAttribute("orderItems") which is an ArrayList of OrderItemBeans

Controller Code:

@RequestMapping("/order/{orderId}/save")
public String saveOrder(Map<String, Object> map, @ModelAttribute("orderItems") ArrayList<OrderItemBean> orderItems) throws Exception
{
  ...    
}

Java Bean Code: (getters and setters implied)

public class OrderItemBean
{
  String orderItemId;
  String itemName;
}

I'm not sure where I'm going wrong as I am still learning about Spring.

Try the solution described here: http://stackoverflow.com/questions/890250/better-way-for-dynamic-forms-with-spring — gouki, Jan 11 '13 at 09:11

score 1 · Answer 1 · answered Jan 10 '13 at 22:15

1

I always use declaration params via interface.

try change ArrayList -> List

also be sure that your OrderItemBean declarate with @XmlRootElement annotation and under context.

answered Jan 10 '13 at 22:15

iMysak

2,170
1
22
35

Is ArrayList a valid @ModelAttribute? How can I create a form that populates it?

1 Answers1