<c:if test="${user.password == ‘hello‘}">
<c:choose>
<c:when test="${user.age <= 18}">
<font color="blue"/>
</c:when>
<c:when test="${user.age <= 30 && user.age > 18}">
<font color="red"/>
</c:when>
<c:otherwise>
<font color="green"/>
</c:otherwise>
</c:choose>
</c:if>
STRUTS2:
<s:if test="#user.age <= 18">
<font color="blue"/>
</s:if>
<s:elseif test="#user.age <= 30 && user.age > 18">
<font color="red"/>
</s:elseif>
<s:else>
<font color="green"/>
</s:else>
6. 迭代标签
JSTL:
<c:forEach var="user" items="${users}">
<c:out value="${user.userName}"/>
</c:forEach><!-- 迭代固定次数 -->
<c:forEach var="i" begin="1" end="10" step="3">
<c:out value="${i}"/>
</c:forEach><!-- 这种循环相当于for(int i=1; i<10; i++), 其中step是指迭代的步长,默认为1. -->