分页求助大佬

<div class="box-tools pull-right">
						<ul class="pagination" id="ul">
							<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=1&pageSize=3" aria-label="Previous">首页</a></li>
							<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=${pi.pageNum-1}&pageSize=${pi.pageSize}">上一页</a></li>
							<%--<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=${pi.pageNum-2}&pageSize=${pi.pageSize}" </li>--%>
							<c:forEach items="${pi.navigatepageNums}" var="i">
									<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=${i}&pageSize=${pi.pageSize}">${i}</a></li>
			
							</c:forEach>
							<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=${pi.pageNum+1}&pageSize=${pi.pageSize}">下一页</a></li>
							<li><a href="${pageContext.request.contextPath}/findAllOreders?pageNum=${pi.pages}&pageSize=${pi.pageSize}" aria-label="Next">尾页</a></li>
						</ul>
					</div>

这样写分页会显示所有页码，但是我想显示当前页和前后两页，怎么做啊，数据是从controller类传过来的，
matis的插件pageInfo的数据

    @RequestMapping("findAllOreders")
    public  String findAllOreders(Model model, @RequestParam(defaultValue = "1") Integer pageNumber, @RequestParam(defaultValue = "3") Integer pageSize){
        PageInfo<Orders> pageInfo=ordersService.findAllOrders(pageNumber,pageSize);

        model.addAttribute("pi",pageInfo);
        return "forward:/pages/order-list.jsp";
    }