JSTL - Output not coming as expected
Question
Below is the code I have in index.jsp using jstl 1.2.
<%@ taglib prefix = "c" uri="http://java.sun.com/jstl/core"%>
<% String[] setName = {"Hello", "you", "are", "using", "jstl", "in", "jsp"};
request.setAttribute("getName", setName);
%>
<html>
<body>
<table>
<tr><td>Print</td></tr>
<c:forEach var="itemName" items="#{getName}" >
<tr>
<td>${itemName}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
The output I was expecting is as below
Print
Hello
you
are
using
jstl
in
jsp
However below is what I am getting
Print
#{name}
Please let me know where I am missing
Below is the only jar file I have in WEB-INF/lib folder jstl-1.2.jar
Thanks in advance
Fahim
Note: Adding Java and JSP tag as person who have knowledge of Java and JSP might be knowing JSTL too...
6 answers
solution1
0 2012-01-12 05:30:56
#{name} is not a valid Java variable reference - looks like you are confusing it with JQuery selector. Anyways try just using items="${name}"
solution2
0 2012-01-12 05:31:09
In JSTL 1.2, you don't want to use #{name} in pure JSP, that's only a JSF artifact. Instead, simply use ${name}.
solution3
0 2012-01-12 05:34:04
#{name} is should be like ${name}
oh! might be the jars related to JSTL. check thins link for those jars to include in your project
solution4
0 2012-01-12 05:35:43
You need to refer items using expression language like ${name}
U r using # instead of $ before name
Let me know if this resolves.
solution5
0 ACCPTED 2012-01-12 13:20:46
Here,
<%@ taglib prefix = "c" uri="http://java.sun.com/jstl/core"%>
You're specifying the wrong JSTL taglib URL. This one is for JSTL 1.0. After JSTL 1.1 it requires a /jsp in the path. See also the JSTL 1.1 tag library documentation .
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
As to the of the code (and to reply on all those duplicate answers complaining to use ${} instead), the #{} syntax will only work inside JSP when you're targeting a Servlet 2.5 / 2.1 compatible container with a web.xml conforming Servlet 2.5 spec. Tomcat 6.0 is an example of such a container. The #{} will indeed not work in JSP tags on older containers such as Tomcat 5.5 or older.
For clarity and to avoid confusion among starters, better use ${} all the time in JSP tags. Also better use self-documenting variable names.
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
String[] names = {"Hello", "you", "are", "using", "jstl", "in", "jsp"};
request.setAttribute("names", names);
%>
<!DOCTYPE html>
<html lang="en">
<head>
<title>JSTL demo</title>
</head>
<body>
<table>
<tr><td>Print</td></tr>
<c:forEach items="${names}" var="name">
<tr><td>${name}</td></tr>
</c:forEach>
</table>
</body>
</html>
See also:
solution6
0 2012-01-13 04:54:38
Below is the final code I am using and it is running...
Posting so that someone can use it... Might help me tomorrow ;)
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<% String[] setName = {"Hello", "you", "are", "using", "jstl", "in", "jsp"};
request.setAttribute("getName", setName);
%>
<html>
<body>
<table>
<tr><td>Print</td></tr>
<c:forEach var="itemName" items="#{getName}">
<tr>
<td>${itemName}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
Learning : I was using <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %> instead of <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.