jstl technology

${requestScope.loginMember.userName}

 如果在forEach时出现：According to TLD or attribute directive in tag file, attribute items does not accept any expressions ,可以考虑 ：在jsp的头部的taglib 声明

//原taglib 
<%@taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
//修改为如下
<%@taglib uri="http://java.sun.com/jstl/core_rt" prefix="c" %>

 

  <table style="border:1px solid green" border="1" bgcolor="#ffffff">
    <c:forEach items="${requestScope.allMember}" var="singleMember" varStatus="var1" >  
  	<c:choose >
   		<c:when test="${var1.index%2==0}">
   			 <tr bgcolor="#f4f2ff">
     				<td>${singleMember.userName }${var1.index }
				</td>
    			</tr>
  		 </c:when>
   		<c:otherwise>
    			<tr >
    				 <td>${singleMember.userName }
				</td>
    			</tr>
  		 </c:otherwise>
  	</c:choose>
    </c:forEach>
    </table>