Spring MVC #ModelAttribute getting filled Entity - forms

Question

Today I am stuck with the spring-form with the POST method which doesn't give posted item to the Controller which I wanted. Here is my code.
Controller.java
#Controller
#RequestMapping("/cart")
public class CartController extends CommonController
{
#RequestMapping(value = "/add", method = RequestMethod.POST)
public ModelAndView addCart(#ModelAttribute("productList") Item item, BindingResult result,Model model){
System.out.println(item.getId()); /// <-- doesn't gives me the ID
return new ModelAndView("cart");
}
}
ProductList.jsp
/// Loop through the products of search itemlist and generates the forms with the correct items
<c:forEach var="item" items="${productList.items}" varStatus="status">
${item.name}
<div class="addCart">
<c:url value="/cart/add.html" var="addURL" />
<form:form method="POST" action="${addURL}" modelAttribute="productList">
<form:hidden path="items[${status.index}].id"/>
<input type="submit" class="addCartBtn" value="Add to cart" />
</form:form>
</div>
BackingBean.java
public class SearchForm implements Serializable
{
private Collection<Item> items;
private String term;
// getters and setters
}
The ${productList} is the backingbean which loops through all items.
I don't really know what the problem is why it isn't giving me the correct data it passed through the POST.
Many thanks.

Answer 1

Covert your spring:hidden tag to normal html hidden tag:
<form:hidden path="items[${status.index}].id"/>
to
<input type="hidden" name="id" value="${item.id}"/>