Question

I have the following problem in Struts 2.

Let’s assume i have a class like this

 class User {
       private String name;
       private String address;
       public String getName() { return name;}
       public String getAddress() { return address;}
    }

and a list of users available on ValueStack named : users
and a list of user propertiesavailable also on ValueStack as: userProps.
In this case userProps would be {name, address}.

Now I want to iterate over the users list and dinamycally access one user properties via userProps.

Here is how:

 <s:iterator value="#users" var="user">
    <s:iterator value="#userProps" var="prop">    
      **<%--- HOW to get user.name, user.address ???%>**
       <s:property value="#user.%{#prop}"/>
    </s:iterator>
 </s:iterator>

I dont know how to evaluate #user.#data to obtain the value for #user.name or #user.address ??

Thank you.

Answer 1

It seems that Struts2 does not support double evaluation… just what I have tried to do.

But here is my workaround!

<% 
 ValueStack vs = ActionContext.getContext.getValueStack();
 %>
<s:iterator value="#users" var="user">
    <s:iterator value="#userProps" var="prop">    

       <%
        String userProp =(String) vs.findValue("#prop");
        Object userPropVal = vs.findValue("#users."+userProp);
        vs.getContext().put("userPropValKey", userPropVal);
       %>
       <s:property value="#userPropValKey"/>
    </s:iterator>
 </s:iterator>

Tadaaa.. and it works!