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Introduction
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Custom tags are distributed in a tag library, which defines a set of related custom tags and contains the objects that implement the tags. The object that implements a custom tag is called a tag handler.
- JSP technology defines two types of tag handlers: simple and classic.
- Simple tag handlers can be used only for tags that do not use scripting elements in attribute values or the tag body.
- Classic tag handlers must be used if scripting elements are required.
CLICK HERE to download this complete example (zip file)
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CopyrightTag.java
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package copyright;
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import javax.servlet.jsp.*;
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import javax.servlet.jsp.tagext.*;
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public class CopyrightTag extends TagSupport
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{
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public int doStartTag() throws JspException
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{
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Try
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{
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JspWriter out=pageContext.getOut();
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out.println("<BR><B> Copyright 2008-2009 Bourgia<B>");
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}
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catch (Exception ioException)
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{
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System.err.println("IO Exception");
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System.err.println("ioException.toString()");
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}
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return SKIP_BODY;
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}
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public int doEndTag() throws JspException
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{
return SKIP_PAGE;
}
}
Download: CopyrightTag.java
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CopyrightTag.tld
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<taglib>
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<tlib-version>1.0</tlib-version>
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<jsp-version>1.2</jsp-version>
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<short-name>Copyright Info</short-name>
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<description>
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Developing First Custom Tags
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</description>
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<tag>
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<name>CopyrightTag</name>
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<tag-class>copyright.CopyrightTag</tag-class>
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<body-content>empty</body-content>
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</tag>
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</taglib>
Download: CopyrightTag.tld
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CopyrightTag.jsp
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<html>
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<head>
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<title>New Tech Books </title>
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</head>
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<body>
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<center> <b> www.completetutorials.googlepages.com </b> </center><BR>
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<center><b> Welcome to our Website </b></center>
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<%@ taglib uri="/CopyrightTag.tld" prefix="chrt" %>
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<center><chrt:CopyrightTag /></center>
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</body>
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</html>
Download: CopyrightTag.jsp
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