iterator标签嵌套问题

[herrychen90]

userList是用户的集合，每个用户有一个upList(用户项目的集合),每个用户项目有umList,我想要循环的用iterator来输出这些信息

ActionContext ac=ActionContext.getContext();
		
		List<UserInfo> userList=null;
		//查询出所有的用户
		userList=this.userService.selectAllUser(page.getPageNo(), StaticVariable.USER_PAGE_SIZE);
		ac.put("userList", userList);
		
		//为了求出共有几条记录
		if(ac.getSession().get("user_all_size")==null){
			List userList2 = this.userService.selectAllUser();
			ac.getSession().put("user_all_size", userList2.size());
		}
		
		//查询出每个用户参与的项目
		List<UserProject> upList=null;
		List<UserModel> umList=null;
		for(int i=0;i<userList.size();i++){
			upList=this.userService.selectUserProject(userList.get(i),StaticVariable.USER_PROJECT_SIZE);
			/*for(int k=0;k<upList.size();k++){
				System.out.print(upList.get(k).getPnumber()+",");
			}
			System.out.println();*/
			ac.put(userList.get(i).getUnumber(), upList);
			for(int j=0;j<upList.size();j++){
				umList=this.userService.selectUserModel(userList.get(i),upList.get(j));
				ac.put(upList.get(j).getPnumber(), umList);
			}
		}

		
		int size=(int) ac.getSession().get("user_all_size");
		Page newPage = Page.setNewPage(page.getPageNo(),
				StaticVariable.USER_PAGE_SIZE,size ,StaticVariable.USER_ALL);
		
		ac.put("newPage", newPage);
		return SUCCESS;