how to install JSTL on w2k?

cyan01 · Feb 11, 2005

Hi, Experts,

I am new to JSP and am study a book "Beginning jsp 2.0". But I am having trouble in running the examples in this book.

Here is the details:

1) The example that I am running:

Code:

<%@ taglib uri="[URL unfurl="true"]http://java.sun.com/jstl/core_rt"[/URL] prefix="c" %>
<html>
    <body>
        You sent the following request headers:
        <p/>
        <table border="1">
            <tr>
                <th>
                    Header
                </th>
                <th>
                    Value
                </th>
            </tr>
        <c:forEach var="entry" items="${header}">
            <tr>
                <td>
                    ${entry.key}
                </td>
                <td>
                    ${entry.value}
                    
                </td>
            </tr>
        </c:forEach>
        </table>
    </body>
</html>

2) The error message I got:

org.apache.jasper.JasperException: The absolute uri:

http://java.sun.com/jstl/core_rt

cannot be resolved in either web.xml or the jar files deployed with this application
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:50)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:114)
org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:316)
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:147)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:418)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:483)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1539)
org.apache.jasper.compiler.Parser.parse(Parser.java:126)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:211)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:146)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

3) My guess is that I did not set up my jstl correctly. I got my jstl at here:

http://www.apache.org/dist/jakarta/taglibs/standard/binaries/

The file name is jakarta-taglibs-standard-1.1.2.zip.

After unzip it, I noticed that there are two jar files in lib dir: jstl.jar and standard.jar. The path for the example listed above is:

%CATALINA_HOME%\webapps\RequestHeaders\request.jsp
%CATALINA_HOME%\webapps\RequestHeaders\WEB-INF\lib\jstl.jar
%CATALINA_HOME%\webapps\RequestHeaders\WEB-INF\lib\standard.jar

Based on my best understanding, that's all I need to do in order to setup jstl. Have I missed something? Or am I totally wrong?

Thank you very much for reading and help!

jwenting · Mar 3, 2005

Put both in the WEB-INF/lib directory of your web application.
That should be enough to get any JSP under the webapp to use JSTL.

Of course you do need to use Tomcat 5.0 or later to have JSTL 1.1 support at all.
If you're using Tomcat 4.x, replace that with the latest stable 5.x build (5.5.something).

cyan01 · Mar 3, 2005

Thank you very much, jwenting, I have fixed this problem couple weeks ago.

Diancecht · Mar 3, 2005

It's a good practice to tell people when you fix your problem ...

jwenting · Mar 7, 2005

And give the solution so everyone can learn.

cyan01 · Mar 7, 2005

The reason I did not post my solution here was that I thought few people cares at this forum. I posted my question here on 2-11-2005, and I resolved the problem around 2-20. I even forgot I posted a question here.

The solution may not make too much sense, either. But here you go:

1) I reinstalled JRE, TOMCAT & JSTL;
2) And the file structure is like this:
%CATALINA_HOME%\webapps\myjsp\{all jsp files}
%CATALINA_HOME%\webapps\myjsp\WEB-INF\lib\{jstl jar files}

That's it. I can not explain why it did not work first time.

jwenting · Mar 8, 2005

well, that is the standard (in fact the only correct) solution

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how to install JSTL on w2k?

cyan01

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jwenting

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Diancecht

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jwenting

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cyan01

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jwenting

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