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This article is an extension to Discover Sling in 15 minutes  showing how to use sling.include in JSP . Its best to look at Discover Sling in 15 minutes  before continuing this article.

sling.include can be called in two ways in a JSP script.

  • using <sling:include> tag.

  • using <% sling.include("[path to resource]") ; %> 

To use sling:include in a JSP script , you have to use <sling:defineObjects/>  tag.

 The examples in Discover Sling in 15 minutes for using sling.include should be changed to jsp as follows,

The header.jsp is as follows, 

<%@taglib prefix="sling" uri="http://sling.apache.org/taglibs/sling/1.0"%>

<sling:defineObjects/>

<div>
	<p style="color:blue;">
		<img src="/images/sling.jpg"  align="right"/>
			<%= currentNode.getProperty("headline").getValue().getString() %>
	</p>
</div>

The html.jsp can be written in one of the following ways,

If you are using <% sling.include("[path to resource]") ; %>  create html.jsp as follows,

<%@page session="false"%>
<%@taglib prefix="sling" uri="http://sling.apache.org/taglibs/sling/1.0"%>

<sling:defineObjects/>

<html>
	<body>
		<div id="header">
			<% sling.include("/content/header"); %>
		</div>
		<h1><%= currentNode.getProperty("title").getValue().getString() %></h1>
	</body>
</html>

If you are using <sling:include> tag create html.jsp as follows,

<%@page session="false"%>
<%@taglib prefix="sling" uri="http://sling.apache.org/taglibs/sling/1.0"%>

<sling:defineObjects/>

<html>
	<body>
		<div id="header">
			<sling:include path="/content/header" />
		</div>
		<h1><%= currentNode.getProperty("title").getValue().getString() %></h1>
	</body>
</html>

How to use selectors

 The above examples will assume all your resources are rendered using a html.jsp at each node. Then you might have a question as to how can I use more than one script to work with more than one resource. (sad)

Sling has an answer. The addSelectors parameter in <sling:include /> tag.

References:

For more information on other scripting variables look at Common scripting variables page.

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