问支柱2. s:属性。如何获得其名称作为参数传递给jsp的变量的值？

EN

public class Message{

    private Location origin;
    private Location destination;

//Getters and setters correctly defined   
}

public class Location{

private String address;    
}

 public class MessageAction {

        private Message message;
       //Getters and setters correctly defined   
    }

<s:push value="message">
    <s:include value="/jsp/location.jsp">
        <s:param name="variableName" value="'origin'" />
    </s:include>
    <s:include value="/jsp/location.jsp">
        <s:param name="variableName" value="'destination'" />
    </s:include>
</push>

<s:set name="variableName">${param.variableName}</s:set>
<s:property value="%{%{variableName}.address}" />

<s:property value="origin.address" />
<s:property value="destination.address" />