File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes JSP and the fly likes Using TLD in JSP Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » JSP
Bookmark "Using TLD in JSP" Watch "Using TLD in JSP" New topic

Using TLD in JSP

Bulent Kamberoglu

Joined: Aug 14, 2005
Posts: 6
//JSP file

<%@ taglib prefix="mine" uri="DiceFunctions"%>

//myFunctions.tld under WEB-INF

<taglib xmlns="" version="2.0">
int rollDice()


// under WEB-INF\classes
import java.util.*;
public class DiceRoller{
public static int rollDice(){
return (int) ((Math.random() * 6) + 1);

// web.xml under WEB-INF

<web-app xmlns=""

<display-name>Welcome to Tomcat</display-name>
Welcome to Tomcat

<!-- JSPC servlet mappings start -->


<!-- JSPC servlet mappings end -->


I also add jstl.jar in my WEB-INF/lib directery.But still this program does not work.As output I get only ${mine:rollIt()}.In my computer I can not run EL .I always get same result ${....} ,no output.Could you tell me how i can fix this problem?Thanks in advance.

Vishnu Prakash
Ranch Hand

Joined: Nov 15, 2004
Posts: 1026
Add this page directive at the beginning of the JSP Page
<%@ page isELIgnored="false" %> for EL to work

You should add one more element in your TLD file <short-name>mine</shot-name>.
You can use short-name to refer prefix attribute of taglib directive.

AND you don't have to add all these in your web.xml file.

AND make sure you complete your <sevlet-mapping> element

Servlet Spec 2.4/ Jsp Spec 2.0/ JSTL Spec 1.1 - JSTL Tag Documentation
Stefan Evans

Joined: Jul 06, 2005
Posts: 1407
The only thing I can see wrong is that your java code must be in a package.

Seeing as you have specified your web.xml as version 2.4, EL evaluation should be enabled by default.
What server are you using? Is it Servlet2.4/JSP2.0 capable? (eg Tomcat 5)
Bulent Kamberoglu

Joined: Aug 14, 2005
Posts: 6
I am using Tomcat 5.5,Servlet 2.4
I agree. Here's the link:
subject: Using TLD in JSP