jsp页面中如何将时间戳字符串格式化为时间标签

?xml version="1.0" encoding="ISO-8859-1" ?>
!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
taglib>
tlib-version>1.0/tlib-version>
jsp-version>1.2/jsp-version>
short-name>date/short-name>
uri>http://com.demo.util.datejstl/tags/uri>
tag>
name>date/name>
tag-class>com.demo.util.jstl.JSTLUtil/tag-class>
attribute>
name>value/name>
required>true/required>
rtexprvalue>true/rtexprvalue>
/attribute>
attribute>
name>parttern/name>
required>true/required>
rtexprvalue>true/rtexprvalue>
/attribute>
/tag>
/taglib>

%@ taglib uri="http://com.demo.util.datejstl/tags" prefix="date"%>

date:date value="${time}" parttern="yyyy-MM-dd HH:mm:ss">/date:date>/div>