java和JSTL遍历map
public Map<Integer,List<MeetMenu>> getRoleMenu(int userId) {Map<Integer,List<MeetMenu>> mapMenu = new HashMap<Integer, List<MeetMenu>>();//拼凑权限条件List<RoleMenu> list = userDao.getRoleMenuIds(userId);List<MeetMenu> menuList = null;if(list.size()>0){StringBuffer sb = new StringBuffer();for(RoleMenu rm:list){sb.append(rm.getMenuId());sb.append(",");}String menuIds = sb.toString().substring(0,sb.toString().length()-1);menuList = userDao.getMenuList(menuIds);for(MeetMenu mm:menuList){if(mm.getParentId()==0){int menuId = mm.getMenuId();List<MeetMenu> listOneList = userDao.getMenuOneList(menuIds, menuId);mapMenu.put(menuId,listOneList);}}System.out.println("-------------------------------------------");System.out.println("mapMenu size = "+mapMenu.size());Iterator it = mapMenu.entrySet().iterator();while (it.hasNext()) {Map.Entry entry = (Map.Entry)it.next();int menuId = Integer.parseInt(entry.getKey().toString());System.out.println("menuId = "+ menuId);List<MeetMenu> mlist = (List<MeetMenu>)entry.getValue();for(MeetMenu m:mlist){System.out.println(m.getMenuName()+" "+m.getLinkUrl());}}System.out.println("-------------------------------------------");}return mapMenu;}=====================================================================解析<c:forEach items="${menuList}" var="ml" varStatus="states"><c:out value="${ml.key}"></c:out> -> <c:forEach items="${ml.value}" var="menu" varStatus="menuStates"><c:out value="${menu.menuName}"></c:out></c:forEach></c:forEach>