通过EL表达式和JSTL格式化当前时间

可以用jstl里面的format标签，很方便
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/fmt" %> 

<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<fmt:parseDate value="${param.date}" var="date" pattern="yyyy/MM/dd:HH:mm:ss>
<fmt:parseDate value="${param.isoDate}" var="isoDate" pattern="yyyyMMdd'T'HHmmss">

The input parameters must match the patterns, or the JSP will thrown an exception. This page does no error handling.

Input parameters:
Date:    2004/04/01:13:30:00    Java format: Thu Apr 01 13:30:00 CST 2004
isoDate: 20040531T235959        Java format: Mon May 31 23:59:59 CDT 2004

Dates
Tag Output
Attribute: value; required. Tag has no body.
<fmt:formatDate value="${date}" type="both"/>

2004-4-1 13:30:00 
<fmt:formatDate value="${isoDate}" type="both"/>

2004-5-31 23:59:59 
Attribute: type; optional. Indicates what to print: date, time, or both.
<fmt:formatDate value="${date}" type="date"/>

2004-4-1 
<fmt:formatDate value="${isoDate}" type="time"/>

23:59:59 
Attribute: dateStyle; optional. Varies the date format.
<fmt:formatDate value="${isoDate}" type="date" dateStyle="default"/>

2004-5-31 
<fmt:formatDate value="${isoDate}" type="date" dateStyle="short"/>

04-5-31 
<fmt:formatDate value="${isoDate}" type="date" dateStyle="medium"/>

2004-5-31 
<fmt:formatDate value="${isoDate}" type="date" dateStyle="long"/>

2004年5月31日 
<fmt:formatDate value="${isoDate}" type="date" dateStyle="full"/>

2004年5月31日 星期一 
Attribute: timeStyle; optional. Varies the time format.
<fmt:formatDate value="${isoDate}" type="time" timeStyle="default"/>

23:59:59 
<fmt:formatDate value="${isoDate}" type="time" timeStyle="short"/>

下午11:59 
<fmt:formatDate value="${isoDate}" type="time" timeStyle="medium"/>

23:59:59 
<fmt:formatDate value="${isoDate}" type="time" timeStyle="long"/>

下午11时59分59秒 
<fmt:formatDate value="${isoDate}" type="time" timeStyle="full"/>

下午11时59分59秒 CDT 
Attribute: pattern; optional. Inidcates date/time custom patterns.
<fmt:formatDate value="${date}" type="both" pattern="EEEE, MMMM d, yyyy HH:mm:ss Z"/>

星期四, 四月 1, 2004 13:30:00 -0600 
<fmt:formatDate value="${isoDate}" type="both" pattern="d MMM yy, h:m:s a zzzz/>