//java2sYourOwnJSPTag.war
// add to web.xml
<taglib>
<taglib-uri>http://java.sun.com/jstl/java2s</taglib-uri>
<taglib-location>/WEB-INF/java2s.tld</taglib-location>
</taglib>
// create new java2s.tld file in WEB-INF directory
//File:java2s.tld
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<!-- a tab library descriptor -->
<taglib xmlns="http://java.sun.com/JSP/TagLibraryDescriptor">
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>Java2s Simple Tags</short-name>
<tag>
<name>HelloWorldTag</name>
<tag-class>com.java2s.HelloWorldTag</tag-class>
<body-content>empty</body-content>
</tag>
</taglib>
// create HelloWorldTag.java under WEB-INF\classes\com\java2s\
// include jsp-api.jar into your CLASSPATH
// and compile it
package com.java2s;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.util.*;
public class HelloWorldTag extends TagSupport
{
public int doStartTag() throws JspException
{
try
{
JspWriter out = pageContext.getOut();
HttpServletResponse response = (HttpServletResponse)pageContext.getResponse();
out.write("Hello world from www.java2s.com!");
}
catch(Exception e)
{
throw new JspException(e.getMessage());
}
return EVAL_PAGE;
}
}
// create JSP file: HelloWorldTag.jsp
<%@ taglib uri='WEB-INF/java2s.tld' prefix='hw' %>
<!-- the HellowWorld must be consistent with the tag name in *.tld-->
<html>
<body>
<hw:HelloWorldTag />
</body>
</html>
// start tomcat and load the JSP file in the browser
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