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JSTL use with a jsp

Posted on 2012-04-05
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993 Views
Last Modified: 2012-04-09
When I run the following jsp, I am getting the error in the attached txt file.


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

<html>  <
      head>    
            <title>Count to 10 Example (using JSTL)</title>  
      </head>  

      <body>    
            <c:forEach var="i" begin="1" end="10" step="1">      
            <c:out value="${i}" />      
            <br />    
            </c:forEach>  
      </body>

</html>

Do I need to have jstl-1.2.jar in:

Tomcat 5.0\webapps\ROOT\WEB-INF\lib\

or

Tomcat 5.0\common\lib

I have jdk version j2sdk1.4.2_01.

Thank you
JSTL-ISP-Error.txt
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Comment
Question by:Mike Eghtebas
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11 Comments
 
LVL 27

Expert Comment

by:rrz
ID: 37814719
I just realized that Tomcat 5 is too old for JSTL 1.2.
I think you need to go to  
http://archive.apache.org/dist/jakarta/taglibs/standard/binaries/ 
and download  
jakarta-taglibs-standard-1.1.2.zip  
Unzip it and look in the folder
jakarta-taglibs-standard-1.1.2/lib  
and you will find two jars;  
jstl.jar and  standard.jar  
Put those two jars into  
Tomcat 5.0\common\lib
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LVL 27

Expert Comment

by:rrz
ID: 37814771
Why don't you use Tomcat 7 ?
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LVL 34

Author Comment

by:Mike Eghtebas
ID: 37814906
In my own laptop I have 7.0 but at work, I have to use version 5.

any idea what the error is complaining about? I did put jstl-1.2.jar in common\lib folder.

Does it get uncompressed automatically? Does the error has something to do with the this version of jstl (jstl-1.2.jar in)?

Why the above jsp not working? It is supposed to list 1 to 10 (in 10 lines)?

Thanks
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LVL 27

Expert Comment

by:rrz
ID: 37814997
I forgot to tell you that  
><%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>  
Was for JSTL 1.0  
For JSTL 1.1 and greater,  we have to use  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

>any idea what the error is complaining about?  
>java.lang.UnsupportedClassVersionError: org/apache/taglibs/standard/tlv/JstlCoreTLV (Unsupported major.minor version 49.0)
This error is given because the new features introduced in the newer version of Java are not present in the older version.
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LVL 27

Expert Comment

by:rrz
ID: 37815012
Go ahead and get the older jars. See My first comment.
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LVL 27

Expert Comment

by:rrz
ID: 37815023
>Does it get uncompressed automatically?
No. java just reads it.  
>It is supposed to list 1 to 10 (in 10 lines)?  
yes
0
 
LVL 34

Author Comment

by:Mike Eghtebas
ID: 37816118
In common\lib folder, I have 73 files. This means I possibly have all I need and it is not required to download something else.

How can I what version of JSTL I have so that we can modify the directive (<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>) accordingly?

Please see the attached screen-sholt of the files in this folder.


Thanks
coomon-lib-folder.bmp
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LVL 27

Expert Comment

by:rrz
ID: 37816286
What did you download ?  
Anyway, just use  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>    

>How can I what version of JSTL I have  
You could make a copy of it and change the file name to xxx.zip. Unzip it and look in  the META-INF/MANIFEST.MF file.
0
 
LVL 34

Author Comment

by:Mike Eghtebas
ID: 37816380
re:> What did you download ?

I have not dowloaded yet because I had 73 files in common\lib folder thinking I have already what I need. So the question is how to modify the directive (in the book example:<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>) to work with what I already have.

I did try:

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

but got the attached error (maybe the same as before).

Mike
JSTL-ISP-Error2.txt
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LVL 27

Accepted Solution

by:
rrz earned 500 total points
ID: 37816425
I am sorry.  I didn't think there was going to be a  problem.
Now I notice in  your common-lib-folder.bmp that you have both versions in there.  
Please remove
jstl-1.2.jar  
You can't use that in Tomcat 5 and it might be causing the problem.  
You have the jstl.jar and standard.jar already in there. Good.  You can check the version in the manifest(in jstl.jar) as I posted above here. If its 1.1x then use
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
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Author Closing Comment

by:Mike Eghtebas
ID: 37823747
thank you
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