More than 5 years have passed since last update.

Struts2で自作の拡張タグを作る

Last updated at 2016-01-28Posted at 2016-01-28

HTMLやJSPのようなタグを独自に作る事ができる。
環境はStruts2で試しています。

現在時刻を表示するサンプル

JSP

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEnco	ding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ taglib prefix="t" uri="/WEB-INF/mytaglib.tld" %>

<html>
<body>
<t:test/>
</body>
</html>

TLD

<?xml version="1.0" ?>

<taglib>
    <tlib-version>1.1</tlib-version>
    <jsp-version>2.1</jsp-version>
    <short-name>HelloTag</short-name>
    <tag>
        <name>test</name>
        <tag-class>mytaglib.HelloTag</tag-class>
      <body-content>EMPTY</body-content>
    </tag>
</taglib>

java

package mytaglib;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;

public class HelloTag extends SimpleTagSupport{

    public void doTag() throws JspException, IOException {
        String string = new SimpleDateFormat("yyyy/MM/dd").format(new Date());
        getJspContext().getOut().print(string);
    }
}

You get articles that match your needs
You can efficiently read back useful information
You can use dark theme

What you can do with signing up