1. JSTL格式化和解析日期

格式化日期：

<fmt:formatDate value="${model.date}" pattern ="yyyy-MM-dd" > 

或者 

<fmt:formatDate value="<%=new java.util.Date() %>" pattern ="yyyy-MM-dd" /> 

取得request参数： 

<c:out value="param.参数名"/> 

jstl格式化日期标签收藏
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/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/> 

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2. JavaScript 格式化

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/**//*
  将String类型解析为Date类型.
  parseDate('2006-1-1') return new Date(2006,0,1)
  parseDate(' 2006-1-1 ') return new Date(2006,0,1)
  parseDate('2006-1-1 15:14:16') return new Date(2006,0,1,15,14,16)
  parseDate(' 2006-1-1 15:14:16 ') return new Date(2006,0,1,15,14,16);
  parseDate('2006-1-1 15:14:16.254') return new Date(2006,0,1,15,14,16,254)
  parseDate(' 2006-1-1 15:14:16.254 ') return new Date(2006,0,1,15,14,16,254)
  parseDate('不正确的格式') retrun null
*/
function parseDate(str){
  if(typeof str == 'string'){
    var results = str.match(/^ *(\d{4})-(\d{1,2})-(\d{1,2}) *$/);
    if(results && results.length>3)
      return new Date(parseInt(results[1]),parseInt(results[2]) -1,parseInt(results[3])); 
    results = str.match(/^ *(\d{4})-(\d{1,2})-(\d{1,2}) +(\d{1,2}):(\d{1,2}):(\d{1,2}) *$/);
    if(results && results.length>6)
      return new Date(parseInt(results[1]),parseInt(results[2]) -1,parseInt(results[3]),parseInt(results[4]),parseInt(results[5]),parseInt(results[6])); 
    results = str.match(/^ *(\d{4})-(\d{1,2})-(\d{1,2}) +(\d{1,2}):(\d{1,2}):(\d{1,2})\.(\d{1,9}) *$/);
    if(results && results.length>7)
      return new Date(pars