0 Replies Latest reply on Apr 11, 2006 1:04 AM by baba79au

Problem with JSP Output while using Custom TagLibs

baba79au Apr 11, 2006 1:04 AM

Hi
I need an urgen help.. Please try helping me.. ! Thanks in advance..

Environment Running under:

JBoss Version : 4.0.2
JDK Version : 1.4.2

I am using the Custom Tag Lib to iterate over the data. I am having a problem with the output of the jsp while using the custom tag lib.

The output from Jsp Page when accessed first time is :

Hello
Hello Again
Hello Again
Hello Again

When I try to re-visit the page or refresh the page again then the output from the Jsp Page is :

Hello
Hello Again

The source code:

RepeatHelloTag.java:

package com.masslight.tagExampleClasses;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.*;

public class RepeatHelloTag extends javax.servlet.jsp.tagext.BodyTagSupport {
 int count = 1;
 int numberOfIterations = 3;
 String greeting = new String("Hello <BR>");
 public int doStartTag() throws JspTagException {
 try {
 pageContext.getOut().print(greeting);
 } catch (Exception ex) {
 throw new JspTagException("IO problems");
 }
 return EVAL_BODY_BUFFERED;
 }
 public int doAfterBody() throws JspTagException {
 try {
 if (count < numberOfIterations) {
 count++;
 return EVAL_BODY_BUFFERED;
 }
 else {
 BodyContent bodyContent = getBodyContent();
 bodyContent.writeOut(getPreviousOut());
 return SKIP_BODY;
 }
 }
 catch (Exception e) {
 throw (new JspTagException("error"));
 }
 }
}

The Jsp File :

tagExample.jsp

<%@ page language="java" %>
<%@ taglib uri="WEB-INF/tagExampleLib.tld" prefix="greeter" %>
<html>
 <body>
 <greeter:RepeatHello>
 Hello Again<br>
 </greeter:RepeatHello>
 </body>
</html>

The TLD file :

tagExampleLib.tld

<?xml version="1.0" encoding="ISO-8859-1" ?>

<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="htpp://www.w3.org/2001/XMLSchema-instance"
 version="2.0">
 <tlibversion>1.0</tlibversion>
 <jspversion>2.0</jspversion>
 <shortname>utility</shortname>
 <info>
 A simple tag library for the examples
 </info>
 <tag>
 <name>RepeatHello</name>
 <tagclass>com.masslight.tagExampleClasses.RepeatHelloTag</tagclass>
 <bodycontent>JSP</bodycontent>
 <info>Print Hello Multiple Times</info>
 </tag>
</taglib>

The Web.xml:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
 PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
 "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app>
 <taglib>
 <taglib-uri>/WEB-INF/tagExampleLib.tld</taglib-uri>
 <taglib-location>/WEB-INF/tagExampleLib.tld</taglib-location>
 </taglib>
</web-app>

Regards
Baba S