How to include parent class fields in json response using struts 2 json plugin

Question

I have the following implementation

public abstract class BaseAcion extends ActionSupport {
    private String result;
    private String message;

    //getters, setters
}

public class MyAction extends BaseAction {
    private String myFirstField;
    private String mySecondField;

    public String execute() {
         ...
         myFirstField = "someValue";
         mySecondField = "someOtherValue";
         ...
         result = SUCCESS;
         message = "Some message here";
         ...
         return result;
    }

    //methods, getters, setters
}

I used struts2-json plugin, action mapping

<package name="my-package" namespace="/" extends="json-default" >
    <action name="myAction" class="MyAction">
        <result type="json"></result>
    </action> 
</package>

The answer I get looks something like this.

{
    "myFirstField":"someValue",
    "mySecondField":"someOtherValue"
}

I also want to get the "result" and "message" fields.

How to include BaseAction fields in json response?

Answer 1

By default, properties defined in the base classes of the “root” object will not be serialized, to serialize properties in all base classes (before Object), set “ignoreHierarchy” to false as a result of JSON:

Sort of

<result type="json">
  <param name="ignoreHierarchy">false</param>
</result>

See the JSON plugin documentation for more details.

• JSONPlugin-BaseClasses