Question

I using struts2 “s:iterate” tag. My collection name keeps on changing. So i wants to use an expression for specifying the value. According tld expressions are not allowed for “value” in “s:iterate” tag.

is there way to keep the value variable, instead of a static value.

     <s:iterator value="${param.listName}" status="status" > 
    </s:iterator>

Something like above.I would like use the listName from request parameter to specify the name of the collection to the iterate tag.

Answer 1

Do you mean something like this:

<s:iterator var="reportHeader" value="%{#session.myList}" status="headerNumber" >
</s:iterator>

yep works like a charm.

Update:

myList in session.myList is a String which represents the key.

So corresponding action code will be

public String execute(){
  HttpSession session = ServletActionContext.getRequest().getSession();
  session.setAttribute("myList", new ArrayList<String>());
  return Action.SUCCESS;
}