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Using TLD in JSP
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Bulent Kamberoglu
Greenhorn
Joined: Aug 14, 2005
Posts: 6
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//JSP file <%@ taglib prefix="mine" uri="DiceFunctions"%> <html><body> ${mine:rollIt()} </body></html> //myFunctions.tld under WEB-INF <taglib xmlns="http://java.sun.com/xml/ns/j2ee" version="2.0"> <tlib-version>1.2</tlib-version> <uri>DiceFunctions</uri> <function> <name>rollIt</name> <function-class>DiceRoller</function-class> <function-signature> int rollDice() </function-signature> </function> </taglib> // DiceRoller.java 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="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4"> <display-name>Welcome to Tomcat</display-name> <description> Welcome to Tomcat </description> <!-- JSPC servlet mappings start --> <servlet> <servlet-name>TestBean</servlet-name> <jsp-file>/Test3/TestBean.JSP</jsp-file> </servlet> <jsp-config> <taglib> <taglib-uri>DiceFunctions</taglib-uri> <taglib-location>/WEB-INF/myFunctions.tld</taglib-location> </taglib> </jsp-config> <!-- JSPC servlet mappings end --> </web-app> 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. Cheers,
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Vishnu Prakash
Ranch Hand
Joined: Nov 15, 2004
Posts: 1026
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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
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Servlet Spec 2.4/ Jsp Spec 2.0/ JSTL Spec 1.1 - JSTL Tag Documentation
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Stefan Evans
Bartender
Joined: Jul 06, 2005
Posts: 1008
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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)
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Bulent Kamberoglu
Greenhorn
Joined: Aug 14, 2005
Posts: 6
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I am using Tomcat 5.5,Servlet 2.4
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subject: Using TLD in JSP
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