Error while Coding TagLibs

Greenhorn

Posts: 21

posted 19 years ago

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dear all,
please help me with this problem.
i wrote a code using tag <c:forEach></c:forEach>
but i am getting the following error :

org.apache.jasper.JasperException: /jsp/jstl/JSTLpage.jsp(5,0) No tag "forEach" defined in tag library imported with prefix "mine"

i am sending the code as well.

<%@ taglib prefix = 'mine' uri = 'DiceRoller'%>
<html>
<body bgcolor="red">
<table align = 'center'>
<mine:forEach var = 'bks' items='${requestScope.books}'>
<tr>
<td>${bks}</td>
</tr>
</mine:forEach>
</table>
</body>
</html>

i have appropriately copied jstl.jar in ROOT/web-inf folder.
my tld file is as follows which is in ROOT/web-inf/lib folder.

<?xml version="1.0" encoding="ISO-8859-1"?>
<taglib 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">
<tlib-version>1.2</tlib-version>
<uri>DiceRoller</uri>
<function>
<name>RollDiceTLD</name>
<function-class>TLD.RollDiceJava</function-class>
<function-signature>int rollDice(int)</function-signature>
</function>
</taglib>

please help me with this problem.

thanking you,

ajay vasudevan
scjp 1.4

Mat Williams

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Posts: 215

posted 19 years ago

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Hi,

What you have done is create a tld with the uri="DiceRoller"
the only method defined in the tld is 'RollDiceTLD'

you have mapped the prefix 'mine' to the uri 'DiceRoller' therefore in your page the only tag you can call from the page with the prefix of mine is RollDiceTLD

to be able to call forEach you will need to either
1) add a new <%@ taglib prefix='somthing_other_than_mine' uri='uri_for_forEach'%> (the uri escapes me at the moment but I know it is in HFSJ
OR
2) change <%@ taglib prefix='mine' uri='correct_uri_for_forEach'%>

HTH

Mat

kapil munjal

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Posts: 298

posted 19 years ago

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What you are trying to use is mix your tag with the already defined tag library which is here jstl.jar.

Try using <c:forEach> in place of <mine:forEach>

and include this taglib also

<%@ taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core"%>

Kapil Munjal
SCJP 1.4, SCWCD 1.4

With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.