Question

logic:iterate标签问题 我在JSP中使用了logic：iterate标签，一直没有数据显示出来，请大家帮我看看

<logic:empty name="userInfoList" scope="request">
<center><h3>抱歉:没有您的信息</h3></center>
</logic:empty>
<table align="center" border="1">
<logic:notEmpty name="userInfoList" scope="request">
<logic:iterate id="student" name="userInfoList" scope="request">
<tr>
<th width="33.3%">帐号</th>
<th width="33.3%">昵称</th>
<th width="33.3%">真实姓名</th>
</tr>
<tr>
<td width="33.3%"><bean:write name="student" property="ID"/></td>
<td width="33.3%"><bean:write name="student" property="userName"/></td>
<td width="33.3%"><bean:write name="student" property="trueName"/></td>
</tr>
<tr>
<th width="33.3%">电话号码</th>
<th width="33.3%">详细地址</th>
<th width="33.3%">电子邮箱</th>
</tr>
<tr>
<td width="33.3%"><bean:write name="student" property="phone"/></td>
<td width="33.3%"><bean:write name="student" property="address"/></td>
<td width="33.3%"><bean:write name="student" property="email"/></td>
</tr>
</logic:iterate>
</logic:notEmpty>
</table>
action中方法：
public ActionForward checkUserInfo(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
HttpSession session=request.getSession();
String userName=(String)session.getAttribute("userName");
if(userName==null||userName.equals(""))//若用户为空
return mapping.findForward("fail");
Map map=new HashMap();
map.put("userName",userName);
UserDao dao=new UserDaoSimple();
List list=new ArrayList();
list=dao.queryArray(map);//学生查询
request.setAttribute("userInfoList", list);//将查询结果放入request中
return mapping.findForward("studentInfo");//将数据返回查询页
}

Answer 1

页面顶部是否有对logic标签库的引入？
比如
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>

如果还有问题，可以在action中看list是否为空。