error trying out tutorial with tomcat

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Jeff Kish - 14 Jun 2006 01:45 GMT

Hi.

disclaimer.. if this is too complicated, please tell me how to express
the problem more simply.
thanks

I have installed tomcat 5.5 (the latest I believe) on windows xp sp2
home edition.

I'm trying out the tutorial at:

http://java.sun.com/developer/technicalArticles/javaserverpages/JSP20/index.html

When I enter the url:

http://localhost/jsp-examples/jsp2-tutorial/form.jsp?name=xx

It works fine (it displays a form.jsp which is in:

D:\Program Files\Apache Software Foundation\Tomcat
5.5\webapps\jsp-examples\jsp2-tutorial

But when I try to enter the url:

http://localhost/jsp-examples/jsp2-tutorial/math.jsp

I get http status 500 with this exception:

exception

org.apache.jasper.JasperException: The absolute uri:
http://jakarta.apache.org/tomcat/jsp2-example-taglib %>

(The complete error screen is at the bottom.)

I imagine that the error shows it is trying to serve up the math.jsp
file, so it is finding that math.jsp file.

The error component:

<FORM action= cannot be resolved in either web.xml or the jar files
deployed with this application

is telling me it can't make sense of this in the jsp:

<FORM action="\jsp-examples\jsp2-tutorial/math.jsp" method="GET">

Can someone help me understand how to analyze this error?

It is trying to display some fields and add them when the button is
clicked, however I can't figure out the malfunction.

I'm not even getting a box, or a butotn or anything,

I tried changing the jsp to read this, but it still threw an error
saying it could not load the class for the jsp:

<%@ taglib prefix="my"
uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib %>

<HEAD>
<TITLE>Functions</TITLE>
</HEAD>

<BODY>

<H3>Add Numbers</H3>
<P>

</BODY>
</HTML>

So I'm guessing that is the root of the original problem. So, the
class must not be in the correct place I think. mmmm

I assume it is talking about this class:

package jsp2.examples.el;

import java.util.*;

public class Compute{...}

Now I put Compute.java in:

D:\Program Files\Apache Software Foundation\Tomcat
5.5\webapps\jsp-examples\WEB-INF\classes\jsp2\examples\el

and then went to here:
D:\Program Files\Apache Software Foundation\Tomcat
5.5\webapps\jsp-examples\WEB-INF\classes>

and compiled it with:

javac jsp2\examples\el\Compute.java

and the class file is in the directory with the java class.

Can someone tell me what is wrong here, and if I"m
analyzing/approaching the problem correctly? I'm trying to tie all
this taglib stuff together.

is el very commen (expression language) these days?

Thanks
Jeff

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented
it from fulfilling this request.

exception

org.apache.jasper.JasperException: The absolute uri:
http://jakarta.apache.org/tomcat/jsp2-example-taglib %>

<HEAD>
<TITLE>Functions</TITLE>
</HEAD>

<BODY>

<H3>Add Numbers</H3>
<P>
<FORM action= cannot be resolved in either web.xml or the jar files
deployed with this application

org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

org.apache.jasper.JasperException: The absolute uri:
http://jakarta.apache.org/tomcat/jsp2-example-taglib %>

<HEAD>
<TITLE>Functions</TITLE>
</HEAD>

<BODY>

<H3>Add Numbers</H3>
<P>
<FORM action= 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:423)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1552)
    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:155)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache
Tomcat/5.5.17 logs.

--------------------------------------------------------------------------------

Apache Tomcat/5.5.17

Reply to this Message

hiwa - 14 Jun 2006 04:07 GMT

> <FORM action="\jsp-examples\jsp2-tutorial/math.jsp" method="GET">

Dont use '\' here.

Reply to this Message

Jeff Kish - 14 Jun 2006 13:42 GMT

>> <FORM action="\jsp-examples\jsp2-tutorial/math.jsp" method="GET">
>Dont use '\' here.

Thanks.. I'll try when I get home tonight.. you mean use this instead?
jsp-examples.jsp2-tutorial.math.jsp ? or what exatly?

I basically copied from the tutorial, so I appreciate the clarification, and
maybe a 'why'.

Warm Regards!
Jeff Kish

Reply to this Message

Jeff Kish - 15 Jun 2006 00:03 GMT

>> <FORM action="\jsp-examples\jsp2-tutorial/math.jsp" method="GET">
>Dont use '\' here.

I tried this with no luck:
<FORM action="/jsp-examples/jsp2-tutorial/math.jsp" method="GET">

Any other pointers? thanks

Reply to this Message

Juha Laiho - 15 Jun 2006 21:05 GMT

Jeff Kish <kishjjrjj@charter.net> said:

>http://java.sun.com/developer/technicalArticles/javaserverpages/JSP20/index.html

>http://localhost/jsp-examples/jsp2-tutorial/math.jsp
>
[quoted text clipped - 15 lines]
><FORM action= cannot be resolved in either web.xml or the jar files
>deployed with this application

Ok. It tries to handle all of the above as an URL (ok, URI),
whereas apparently only the
http://jakarta.apache.org/tomcat/jsp2-example-taglib
should be an URI.

Looking at the math.jsp source code, they're missing the double quote
from the end of the URI - so instead of

<%@ taglib prefix="my"
uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib %>

there should be

<%@ taglib prefix="my"
uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib" %>

... hopefully that was all.

Signature

Wolf a.k.a. Juha Laiho Espoo, Finland
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Reply to this Message

Jeff Kish - 15 Jun 2006 22:37 GMT

>Jeff Kish <kishjjrjj@charter.net> said:
>>http://java.sun.com/developer/technicalArticles/javaserverpages/JSP20/index.html
[quoted text clipped - 36 lines]
>
>... hopefully that was all.

yes, it worked fine after I added the double quote.
Thanks so much.
I guess it was a matter of just looking very carefully at the error
message, and having a bit of experience, right?

Regards! (and thanks so much)

Reply to this Message

error trying out tutorial with tomcat

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