jstl 例子、用法 (收集)

1：下拉列表的回显

两种方法，一种是<c:if>

 

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print?

01	<select name="FENR_STATUS">

02	<option value="" selected>学籍状态</option>

03	<option value="999" <c:if test="${_info.fenrStatus==999}">selected</c:if>>全部</option>

04	<option value="0" <c:if test="${_info.fenrStatus==0}">selected</c:if>>在籍</option>

05	<option value="1" <c:if test="${_info.fenrStatus==1}">selected</c:if>>已毕业</option>

06	<option value="2" <c:if test="${_info.fenrStatus==2}">selected</c:if>>休学</option>

07	<option value="3" <c:if test="${_info.fenrStatus==3}">selected</c:if>>停学</option>

08	<option value="4" <c:if test="${_info.fenrStatus==4}">selected</c:if>>退学</option>

09	<option value="5" <c:if test="${_info.fenrStatus==5}">selected</c:if>>转学</option>

10

</select>

 

一种是<c:choose>

 

 

1	<select name="fgraduationState">

2	<c:choose>

3	<c:when test="${_info.fgraduationState eq 0}"><option value="0" selected>毕业</option></c:when>

4	<c:when test="${_info.fgraduationState eq 1}"><option value="1" selected>结业</option></c:when>

5	<c:when test="${_info.fgraduationState eq 2}"><option value="2" selected>未结业</option></c:when>

6	<c:when test="${_info.fgraduationState eq 3}"><option value="3" selected>肄业</option></c:when>

7	</c:choose>

8

</select>

 

 

用哪一种就仁者见仁，智者见智了。

PS：第一种适合用select ,第二种适合根据值的不同显示不同内容。

2：格式化数据

日期格式化

<fmt:formatDate pattern="yyyy-MM-dd HH:mm"   value="${obj.day }" />

 数字格式化（百分比）

<fmt:formatNumber
value="${obj.receiveCount == 0 ? 0 : obj.dealCount/obj.createCount }"
type="percent" maxFractionDigits="2" />

 3：foreach

	<select style="width: 200px" name="group_id" id="group_id">
						<option value="">所属部门</option>
						<c:forEach items="${groupids}" var="group">
							<option value='<c:out value="${group.cfg_key}"/>'>
								<c:out value="${group.cfg_value}"/>
							</option>
						</c:forEach>
					</select>