java - How to get updated list values from JSP in my action?

Question

I have a JSP in which I am iterating over a list and creating an editable table.

<s:iterator value="test" id="countryList">
  <tr>
    <td><s:textfield name="countryCode" value="%{countryCode}" theme="simple" /></td>
    <td><s:textfield name="countryName" value="%{countryName}" theme="simple" /></td>
  </tr>
 </s:iterator>

My list:

List<Country> test = new ArrayList<Country>();  

Country class:

public class Country {
    private String countryCode;
    private String countryName;


and the getter setters......

and say I populate the list like:

Country country = new Country();
Country country1 = new Country();

country.setCountryCode("1");
country.setCountryName("India");

country1.setCountryCode("2");
country1.setCountryName("US");

test.add(country);
test.add(country1);

Now when I change the values of countrycode and countryname in the JSP, I should get the updated values in my action. But am I not able to. Is there any way to get these updated values.

Answer 1

You need the Country object is created when the params interceptor is populating your list using indexed property access.

<s:iterator value="test" id="countryList" status="stat">
  <tr>
    <td><s:textfield name="countryList[%{#stat.index}].countryCode" value="%{countryCode}" theme="simple" /></td>
    <td><s:textfield name="countryList[%{#stat.index}].countryName" value="%{countryName}" theme="simple" /></td>
  </tr>
 </s:iterator>

To let the struts populate the list you should use a type conversion annotation or equivalent in the xml configuration.

@Element(value = Country.class)
@Key(value = String.class)
@KeyProperty(value = "countryCode") 
@CreateIfNull(value = true)
private List<Country> countryList = new ArrayList<Country>;