c:forEach 标签中遍历map集合

java 后台map 集合封装

List<RoleRight> list = rrmapper.selectByROID(String.valueOf(role));
        		Map<String, List<Right>> map = new HashMap<String, List<Right>>();
        		List<Right> rights = new ArrayList<Right>(); //一级菜单
        		for (RoleRight li : list){
        			Right right = rightmapper.selectByPrimaryKey(li.getRid());
        			System.out.println(right.getRname()+";;"+right.getPid() + ";;"+right.getRid());
        			if(right.getPid().equals("0")){
        				rights.add(right); //一级菜单
        			}
        			
        		}
        		//二级菜单
        		for(Right ri : rights){
        			List<Right> ris = new ArrayList<Right>(); 
        			String rid = ri.getRid();
        			for (RoleRight li : list){
                		Right right = rightmapper.selectByPrimaryKey(li.getRid());
                		System.out.println(right.getRname()+";;"+right.getPid() + ";;"+right.getRid());
        				if(rid.equals(right.getPid())){
        					ris.add(right);
        				}
        			}
        			map.put(ri.getRname(), ris);
        		}
        		
        		request.setAttribute("map", map);

jsp 页面用<c:foreach>遍历循环

<c:forEach items="${map}" var="item" varStatus="go">

    ${go.count}

    ${item.key}

    <c:forEach items="${item.value}" var="i">

     ${i.rname}

    </c:forEach>

</c:forEach>

<div class="panel panel-success leftMenu">
					<c:forEach items="${map}" var="item" varStatus="go">
						<div class="panel-heading " id="collapseListGroupHeading${go.count}"
							data-toggle="collapse" data-target="#collapseListGroup${go.count}"
							role="tab">
							<h4 class="panel-title ">
								<i class="glyphicon glyphicon-picture"></i>&nbsp;${item.key} <span
									class="glyphicon glyphicon-chevron-down right"></span>
							</h4>
						</div><!-- class="panel-collapse collapse in" 打开状态 -->
						
						<div id="collapseListGroup${go.count}" class="panel-collapse collapse in"
							role="tabpanel" aria-labelledby="collapseListGroupHeading${go.count}">
							<ul class="list-group">
								<c:forEach items="${item.value}" var="i">
								<li class="list-group-item">
									<!-- 利用data-target指定URL -->
									<button class="menu-item-left" data-target="test2.html"
										onclick="loadPage('<%=basePath%>${i.rurl}')">
										<span class="glyphicon glyphicon-triangle-right"></span> ${i.rname}
									</button>
								</li>
							</c:forEach>
							</ul>
						</div>
						
					</c:forEach>
					</div><!--panel end-->