<c:choose>
<c:when test="${userEntity.user_Authority_id == 'AAAAA'}"><!-- 如果 -->
<td>修改,删除</td>
</c:when>
<c:when test="${userEntity.user_Authority_id == 'AAAcb'}"><!-- 如果 -->
<td>修改,删除</td>
</c:when>
<c:otherwise> <!-- 否则 -->
</c:otherwise>
</c:choose>
<c:if test="${var.index % 2 == 0}">
*
</c:if>
EL表达式判断是否为空,判断是否为空字符串
El表达式判断是否为空字符串
${empty 值} 返回true ,表示为空字符串;
<c:if test=" ${empty basicTree.phone} ">
<td>wwww </td>
</c:if>
El表达式判断是否为空
${值 eq null } 返回true 的话,表示为空
<c:if test="${basicTree.phone eq null }">
<td>mmmm</td>
</c:if>
双保险判断不为空
<c:if test="${not empty basicTree.phone && !(basicTree.phone eq null) }">
哈哈
</c:if>