Struts 2 a tag example

Download It – Struts2-A-Tag-Example.zip

Struts 2 “a” tag is used to render a HTML “<a>” tag. The best practice is always use “<s:url>” tag to create the URL and embed it into the “a” tag. For example,

<s:url value="http://www.google.com" var="googleURL" />
<s:a href="%{googleURL}">Google</s:a>

In this tutorials, it shows 3 ways to use the Struts 2 “a” tag.

1. Action

An Action class to forward the request.

ATagAction.java

package com.mkyong.common.action;
 
import com.opensymphony.xwork2.ActionSupport;
 
public class ATagAction extends ActionSupport{
 
	public String execute() {
		return SUCCESS;
	}
 
}

2. A tag example

A JSP page to show the use of “a” tag to render URL in different ways.

a.jsp

<%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
<head>
</head>
 
<body>
<h1>Struts 2 a tag example</h1>
 
<ol>
 
<li>
<s:url value="http://www.mkyong.com" var="mkyongURL" />
<s:a href="%{mkyongURL}">J2EE web development tutorials</s:a>
</li>
 
<li>
<s:a href="http://www.google.com">Google search engine</s:a>
</li>
 
<li>
<s:url action="aTagAction.action" var="aURL" />
<s:a href="%{aURL}">aTagAction</s:a>
</li>
 
</ol>
 
</body>
</html>

3. struts.xml

Link it ~

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
 
<struts>
 	<constant name="struts.devMode" value="true" />
	<package name="default" namespace="/" extends="struts-default">
 
		<action name="aTagAction" 
			class="com.mkyong.common.action.aTagAction" >
			<result name="success">pages/a.jsp</result>
		</action>
 
	</package>
</struts>

4. Demo

http://localhost:8080/Struts2Example/aTagAction.action

Output

Output in HTML source

<html> 
<head> 
</head> 
 
<body> 
<h1>Struts 2 a tag example</h1> 
 
<ol> 
<li> 
<a href="http://www.mkyong.com">J2EE web development tutorials</a> 
</li> 
 
<li> 
<a href="http://www.google.com">Google search engine</a> 
</li> 
 
<li> 
<a href="/Struts2Example/aTagAction.action">aTagAction</a> 
</li> 
</ol> 
 
</body> 
</html>