JSTL forEach

U.O · Mar 26, 2007

I can't understand how <forEach> is supposed to work. This code iterates
once (why?) and produces only one string, "Item" (without the index number).
Why?

<jsp:root version="1.2"
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:c="http://java.sun.com/jsp/jstl/core"

>

<jsp

utput doctype-root-element="html" omit-xml-declaration="false"
doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"

doctype-system="http://www.w3c.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"/>
<jsp:directive.page contentType="text/html; charset=UTF-8" session="true"
/>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1" />
<title>Blah</title>
</head>
<body>
<div>
<c:forEach var="i" start="1" end="10">
Item ${i}<br />
</c:forEach>
</div>
</body>
</html>
</jsp:root>

david.karr · Mar 27, 2007

I can't understand how <forEach> is supposed to work. This code iterates
once (why?) and produces only one string, "Item" (without the index number).
Why?

<jsp:root version="1.2"
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:c="http://java.sun.com/jsp/jstl/core"
<jsputput doctype-root-element="html" omit-xml-declaration="false"
doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"

doctype-system="http://www.w3c.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"/>
<jsp:directive.page contentType="text/html; charset=UTF-8" session="true"
/>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1" />
<title>Blah</title>
</head>
<body>
<div>
<c:forEach var="i" start="1" end="10">
Item ${i}<br />
</c:forEach>
</div>
</body>
</html>
</jsp:root>

I can't say for sure, as I've never tried to use pure XML JSP pages,
but it sure seems like it's not executing the JSTL at all. Is the
fact that you have version "1.2" on your JSP a problem?

Daniel Pitts · Mar 27, 2007

I can't understand how <forEach> is supposed to work. This code iterates
once (why?) and produces only one string, "Item" (without the index number).
Why?

<jsp:root version="1.2"
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:c="http://java.sun.com/jsp/jstl/core"
<jsputput doctype-root-element="html" omit-xml-declaration="false"
doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"

doctype-system="http://www.w3c.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"/>
<jsp:directive.page contentType="text/html; charset=UTF-8" session="true"
/>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1" />
<title>Blah</title>
</head>
<body>
<div>
<c:forEach var="i" start="1" end="10">
Item ${i}<br />
</c:forEach>
</div>
</body>
</html>
</jsp:root>

Have you considered using a modern version of JSPs? Say, JSP 2?

U.O · Mar 27, 2007

david.karr said:
I can't say for sure, as I've never tried to use pure XML JSP pages,
but it sure seems like it's not executing the JSTL at all. Is the
fact that you have version "1.2" on your JSP a problem?

Right, the <c:forEach> tag is still in the generated output. The funny thing
is, when I add my own taglib, my tags are processed correctly.

Generated xhtml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3c.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type"/>
<title>Blah</title>
</head>
<body>
<div>
<c:forEach end="10" start="1" var="i">
Item <br/>
</c:forEach>
</div>
</body>
</html>

steen · Mar 27, 2007

<c:forEach end="10" start="1" var="i">
Item <br/>
</c:forEach>

Looks to me like you're forgetting to add a reference to the taglib:
<%@ taglib uri='http://java.sun.com/jstl/core' prefix='c' %>

because when you forget this, the <c:forEach> tag will be sent to the
client (like your output states)

/Steen

festo · Mar 27, 2007

Looks to me like you're forgetting to add a reference to the taglib:
<%@ taglib uri='http://java.sun.com/jstl/core'prefix='c' %>

because when you forget this, the <c:forEach> tag will be sent to the
client (like your output states)

/Steen

Did you try to use <c

ut value="Item ${i}" /> ?

papaJo

U.O · Mar 27, 2007

steen said:
Looks to me like you're forgetting to add a reference to the taglib:
<%@ taglib uri='http://java.sun.com/jstl/core' prefix='c' %>

Doesn't
xmlns:c="http://java.sun.com/jsp/jstl/core"
do that?

U.O · Mar 27, 2007

festo said:
Did you try to use <cut value="Item ${i}" /> ?

Yes. Same result.

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JSTL forEach

U.O

david.karr

Daniel Pitts

U.O

steen

festo

U.O

U.O

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