Thanks Remmy,

That was it.

Lon


-----Original Message-----
From: Remy Maucherat [mailto:[EMAIL PROTECTED]
Sent: Monday, December 08, 2003 3:38 PM
To: Tomcat Users List
Subject: Re: Tomcat 5.0.16 fails to compile JSP page where 4.1.18
would...


Lon Palmer wrote:
> Hello Group!
> 
> I'm trying to upgrade to tomcat 5.0.16 but I'm having some trouble with
just
> one JSP page.  The pagew will not compile and the error points to this
line
> in the JSP:
> 
> <jsp:useBean id = "LOG_KEEPER" class="com.k4sv.web.LogKeeper" scope =
> "application" />
> 
> A pretty straight forward JSP line to be sure.  Here is the error message:
> type Exception report
> message 
> description The server encountered an internal error () that prevented it
> from fulfilling this request.
> exception 
> org.apache.jasper.JasperException: Unable to compile class for JSP
> 
> An error occurred at line: 17 in the jsp file: /LogCheck.jsp
> 
> Generated servlet error:
>     [javac] Compiling 1 source file
> 
>
/usr/local/tomcat/jakarta-tomcat-5.0.16/work/Catalina/k4sv.com/_/org/apache/
> jsp/LogCheck_jsp.java:59: LogKeeper(java.lang.String) in
> com.k4sv.web.LogKeeper cannot be applied to ()
>           LOG_KEEPER = new com.k4sv.web.LogKeeper();
>                        ^
> 1 error
> 
> 
>       
>
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandle
> r.java:127)
>       
>
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:3
> 51)
>       org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:415)
>       org.apache.jasper.compiler.Compiler.compile(Compiler.java:458)
>       org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
>       
>
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:5
> 52)
>       
>
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:2
> 91)
>       
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
>       org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
>       javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
> note The full stack trace of the root cause is available in the Tomcat
logs.
> 
> Is there something in the new JSP spec that prevents this syntax?  Am I
> doing something wrong?  This page compiles great under 4.1.18 by the way.

For jsp:getProperty and the others, your bean must comply with the 
JavaBean specification (ie, have a no arg constructor). I think this is 
indeed a change from 4.1.x (you can compare the generated code).

BTW, you can use the Jasper from 4.1.x with 5.0.x without any problems 
if you don't care about JSP 2.0 for now (I suggest you care, it's nice :) ).

-- 
xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Rémy Maucherat
Senior Developer & Consultant
JBoss Group (Europe) SàRL
xxxxxxxxxxxxxxxxxxxxxxxxxxxxx


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