JSTL <fmt:formatDate>標簽

<fmt:formatDate>標簽用於以各種不同的方式格式化日期

屬性:

<fmt:formatDate>標簽具有以下屬性：

屬性	描述	必須	默認
value	Date value to display	Yes	None
type	DATE, TIME, or BOTH	No	date
dateStyle	FULL, LONG, MEDIUM, SHORT, or DEFAULT	No	default
timeStyle	FULL, LONG, MEDIUM, SHORT, or DEFAULT	No	default
pattern	Custom formatting pattern	No	None
timeZone	Time zone of the displayed date	No	Default time zone
var	Name of the variable to store the formatted date	No	Print to page
scope	Scope of the variable to store the formatted date	No	page

pattern屬性來指定日期的更精確處理：

代碼	目的	示例結果
G	The era designator	AD
y	The year	2002
M	The month	April & 04
d	The day of the month	20
h	The hour(12-hour time)	12
H	The hour(24-hour time)	0
m	The minute	45
s	The second	52
S	The millisecond	970
E	The day of the week	Tuesday
D	The day of the year	180
F	The day of the week in the month	2 (2nd Wed in month)
w	The week in the year	27
W	The week in the month	2
a	The a.m./p.m. indicator	PM
k	The hour(12-hour time)	24
K	The hour(24-hour time)	0
z	The time zone	Central Standard Time
'		The escape for text
''		The single quote

例子：

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

<html>
<head>
  <title>JSTL fmt:dateNumber Tag</title>
</head>
<body>
<h3>Number Format:</h3>
<c:set var="now" value="<%=new java.util.Date()%>" />

<p>Formatted Date (1): <fmt:formatDate type="time" 
            value="${now}" /></p>
<p>Formatted Date (2): <fmt:formatDate type="date" 
            value="${now}" /></p>
<p>Formatted Date (3): <fmt:formatDate type="both" 
            value="${now}" /></p>
<p>Formatted Date (4): <fmt:formatDate type="both" 
            dateStyle="short" timeStyle="short" 
            value="${now}" /></p>
<p>Formatted Date (5): <fmt:formatDate type="both" 
            dateStyle="medium" timeStyle="medium" 
            value="${now}" /></p>
<p>Formatted Date (6): <fmt:formatDate type="both" 
            dateStyle="long" timeStyle="long" 
            value="${now}" /></p>
<p>Formatted Date (7): <fmt:formatDate pattern="yyyy-MM-dd" 
            value="${now}" /></p>

</body>
</html>

這將產生以下輸出結果：

DATE FORMAT:

Formatted Date (1): 14:27:18

Formatted Date (2): 23-Sep-2010

Formatted Date (3): 23-Sep-2010 14:27:18

Formatted Date (4): 23/09/10 14:27

Formatted Date (5): 23-Sep-2010 14:27:18

Formatted Date (6): 23 September 2010 14:27:18 GST

Formatted Date (7): 2010-09-23