有实体类如下(ActionMapDto): private String actionGroup = null ;
public void setActionGroup(String aValue) {
actionGroup = aValue;
}
public String getActionGroup() {
return actionGroup;
}
在Servlet中进行操作:XXXService service=new XXXXService();
List list=service.getActionMapByUsrID();//返回集合为ActionMapDto
req.getSession().setAttribute("actionmap", list);
返回数据为:
actionGroup
AABB
AABB
CCDD
HHII
HHII
HHII
EEFF
LLOO
LLOO
LLOO
页面操作:<table cellpadding="0" cellspacing="5" border="0">
<tr>
<td class="meanone"><a href="home.html" target="_parent">Home</a></td>
<c:if test="${sessionScope.actionmap != null}">
<c:forEach items="${sessionScope.actionmap}" var="list" varStatus="step"><td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
<td class="meanone" style="color:#979695">CCDD</td>
<td class="meanone"><a href="toshop/bodong?id=1" target="_parent">EEFF</a></td>
<td class="meanone"><a href="tocu/tocuri3.jsp" target="_parent">HHII</a></td></c:forEach>
</c:if>
</tr>
</table>
现在在html里面怎么判断如果session中的数据,actionGroup中有AABB就显示AABB这菜单
比如:<c:if test="${list.actionGroup eq 'AABB'}">
<td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
</c:if>因为集合中有重复数据,如果在循环里面用以上的方法的话,会出现多个AABB的菜单,我只想每个菜单显示1次
请教大家要怎么写啊?
public void setActionGroup(String aValue) {
actionGroup = aValue;
}
public String getActionGroup() {
return actionGroup;
}
在Servlet中进行操作:XXXService service=new XXXXService();
List list=service.getActionMapByUsrID();//返回集合为ActionMapDto
req.getSession().setAttribute("actionmap", list);
返回数据为:
actionGroup
AABB
AABB
CCDD
HHII
HHII
HHII
EEFF
LLOO
LLOO
LLOO
页面操作:<table cellpadding="0" cellspacing="5" border="0">
<tr>
<td class="meanone"><a href="home.html" target="_parent">Home</a></td>
<c:if test="${sessionScope.actionmap != null}">
<c:forEach items="${sessionScope.actionmap}" var="list" varStatus="step"><td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
<td class="meanone" style="color:#979695">CCDD</td>
<td class="meanone"><a href="toshop/bodong?id=1" target="_parent">EEFF</a></td>
<td class="meanone"><a href="tocu/tocuri3.jsp" target="_parent">HHII</a></td></c:forEach>
</c:if>
</tr>
</table>
现在在html里面怎么判断如果session中的数据,actionGroup中有AABB就显示AABB这菜单
比如:<c:if test="${list.actionGroup eq 'AABB'}">
<td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
</c:if>因为集合中有重复数据,如果在循环里面用以上的方法的话,会出现多个AABB的菜单,我只想每个菜单显示1次
请教大家要怎么写啊?
2.list去除重复
3.和el表达式没啥关系……
不能改SQL,可以早改了就是不能动程序,只能改页面的意思
弱弱的问下,List去重用EL表达式怎么弄?
请教大家要怎么写啊?
累不累你
直接在jsp里写java代码不行么<%
--java代码,dosomething
%>
恩,不能用<%%>。郁闷8楼:<c:set>是保存某些数据到session或者其他好像不能解决我的问题。。
如下:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script language="javascript" src="jquery-1.4.2.min.js"></script>
<script>
$(document).ready(function(){
var html = "<tr>";
$(".xxxx").find("td").each(function(n){
if(html.indexOf($(this).html()) == -1) {
html += '<td class="meanone">' + $(this).html() + '</td>';
}
});
html += "</tr>";
alert(html);
$(".xxxx").html(html);
});
</script> </HEAD> <BODY>
<table cellpadding="0" cellspacing="5" border="0" class="xxxx">
<tr>
<td class="meanone"><a href="home.html" target="_parent">Home</a></td>
<td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
<td class="meanone"><a href="mirarg/mirarg3month.jsp" target="_parent">AABB</a></td>
<td class="meanone" style="color:#979695">CCDD</td>
<td class="meanone"><a href="toshop/bodong?id=1" target="_parent">EEFF</a></td>
<td class="meanone"><a href="tocu/tocuri3.jsp" target="_parent">HHII</a></td>
</tr>
</table>
</BODY>
</HTML>
可以的。我怎么没想到JQuery,谢谢。我去看下