前台比较时间，判断后显示或隐藏按钮



后台传出

request.setAttribute("startDate", activity.getStartTime());
request.setAttribute("endDate", activity.getEndTime());

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前端接收

<%
java.util.Date nowdate=new java.util.Date();
Date startDate = (Date)request.getAttribute("startDate");
boolean start = nowdate.after(startDate);
Date endDate = (Date)request.getAttribute("endDate");
boolean end = nowdate.before(endDate);
%>

=========================================================

判断

<%if(start&&end){ %>
    <div id="sb" class="shenbao_anniu">
     <input type="button" value="活动报名" onclick="openWin();" class="submit"/>
     <div class="clearfix"></div>
    </div>

<%} %>