private ArrayList<A> queryData(Connection conn, HttpServletRequest request, Aform) {
Map<String, String> map = new HashMap<String, String>();
map.put("A", "1");
map.put("B", "2");
}

public ActionForward exportData(ActionMapping mapping,
ActionForm form, HttpServletRequest request, HttpServletResponse response) {

map.get("A") <--怎麼在這邊使用map.get
map.get("B") <--怎麼在這邊使用map.get

}