如何将对象列表从jsp发送到struts2动作类？

Question

I am new to Struts2. I have a JSP page which shows a list of Rooms (where Room is a user-defined class). I need to send this entire list to the action class as a hidden field. The JSP code is as follows:

<form method="GET" action="reporting.action" >  
  <s:hidden name="roomsReport" value="%{allRooms}"/>
  <s:textfield name="roomsR" value="%{allRooms}"/>                       
  <s:submit name="action" style="width:220px;" value="Generate Report for Rooms" /> 
</form>

The textfield (used for testing) shows the address for the list (implying that its not null in the jsp page) I am still unable to access it in my ReportingAction class using the following code:

System.out.println("xxx"+this.roomsReport.size());
System.out.println(this.roomsReport);

Both above print statements give 0 and [] respectively. I have the getters and setters for roomsReport as follows:

private List<Room> roomsReport;
public List<Room> getRoomsReport() {
  return roomsReport;
}

public void setRoomsReport(List<Room> roomsReport) {
  this.roomsReport = roomsReport;
}

Can anyone help ?

Answer 1

Finally I could pass the list to the jsp using session

The list is set in a session variable in jsp as follows:

 <s:set name="roomsReport" value="%{allRooms}" scope="session" /> 

In the action class I can access it using the following code:

List<Room> roomsReport = (List<Room>)ActionContext.getContext().getSession().get("roomsReport");