In order to facilitate the display of formatted information on the page and do some special processing... We often use custom tags. The following is a detailed explanation of how to implement custom tags.
1. Introduce a custom tag library on the page
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!-- Introduce custom tags--> <%@ taglib uri="http://java.sun.com/jsp/jstl/ctags" prefix="ctag"%> <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title> Presentation </ title> </head> <body class="bodys"> 时间：<ctag:dateFormat date="2016-03-08 19:08:04"/> </body> </html>
1. Description
Need to rely on tomcat's "jsp-api.jar" and "servlet-api.jar" two jar packages