我想显示一个list序列的title,但是有的title太长,不美观
所以我想控制下title长度,如果它过长,就只显示它前20个字符Action中代码如下:
List list = new ArrayList();
String title1 = "1234567890123456789";
String title2 = "123456789012345";
String title3 = "1234567890123456789012345";
list.add(title1);list.add(title2);list.add(title3);
request.setAttribute("list",list);jsp中代码如下
<c:forEach items="${list }" var="nationalNews">
·[国际]<A href="/cam/news.do?method=show&id=${nationalNews.id }" target="_blank">
<c:choose>
<c:when test="${nationalNews.title 测试EL长度,怎么写}">如果大于20个字符,怎么写</c:when>
<c:otherwise>${nationalNews.title }</c:otherwise> <!-- 小于20个字符的情况 -->
</c:choose>
</c:forEach>
写到这里不会写了,该怎么写啊
所以我想控制下title长度,如果它过长,就只显示它前20个字符Action中代码如下:
List list = new ArrayList();
String title1 = "1234567890123456789";
String title2 = "123456789012345";
String title3 = "1234567890123456789012345";
list.add(title1);list.add(title2);list.add(title3);
request.setAttribute("list",list);jsp中代码如下
<c:forEach items="${list }" var="nationalNews">
·[国际]<A href="/cam/news.do?method=show&id=${nationalNews.id }" target="_blank">
<c:choose>
<c:when test="${nationalNews.title 测试EL长度,怎么写}">如果大于20个字符,怎么写</c:when>
<c:otherwise>${nationalNews.title }</c:otherwise> <!-- 小于20个字符的情况 -->
</c:choose>
</c:forEach>
写到这里不会写了,该怎么写啊
·[国际]<A href="/cam/news.do?method=show&id=${nationalNews.id }" target="_blank">
<script type="text/javascript">
str = '${nationalNews.title }'
if (str.length <= 20)
document.write(str);
else
document.write(str.substr(0, 20) + '...');
</script>
</c:forEach>试试
<c:set var="log.logTitle" value="做一个截取字符串长度的测试"
<c:choose>
<c:when test="${fn:length(log.logTitle) > 10}">
<c:out value="${fn:substring(log.logTitle, 0, 10)}......" />
</c:when>
<c:otherwise>
<c:out value="${log.logTitle}" />
</c:otherwise>
</c:choose>
${fn:length(log.logTitle)
返回长度