Using a LabelValueBean properly

jakarta-ee, java, jsp, ognl, struts2

Solution

I see you are using a `LableValueBean` to populate and show a dropdown. It's a former bean used at last to display a list of objects. In Struts2 you're no longer required such a helper bean. You can display a list of objects by specifying a key field that would hold a unique value of the selected option and a value to be shown as the option text. For example if your object

public class Circle {
   private Long id;
   //getter and setter here

  private String name;
  //getter and setter here
}

and you have in the action class

private List<Circle> circleNameIdList;
//getter and setter here

/**
 * Hold the selected value
 */
private Long circleId;
//getter and setter here

then

<s:select id="circleNameIdListID" label="Circle:" name="circleId" 
  list="circleNameIdList"   listKey="id" listValue="name" headerKey="-1" headerValue="Select Circle"/>

could be used to show the dropdown.

Problem

I have a variable: ``` private ArrayList<LabelValueBean> circleNameIdList; ``` inside my `Action` class where it's value get populated. I want to display the label in my drop-down in JSP and when one label is selected, the corresponding value to that particular label in `circleNameIdList` to be passed to the server. Eg.: If label: `NewYork` is selected then it's corresponding `id = 5`, is sent to the server. How can I achieve this? Up till now I was doing like this in JSP: ``` <s:select list="#session.circleNameIdList" label="Select Circle:" name="circleNameIdList" id="circleNameIdList"></s:select> ``` However, it display is not correct.

Original source