Re: Tomcat 11 JSPC using old package names

Thanks again for pointing that out.

I looked at the compiled JSPs and the header in the malformed is like the
following:

/*
 * Generated by the Jasper component of Apache Tomcat
 * Version: JspC/ApacheTomcat9
 * Note: The last modified time of this file was set to
 *       the last modified time of the source file after
 *       generation to assist with modification tracking.
 */
package net.afva.jsp.main;

My theory now is that it's a pathing issue, related to my Git usage. The
non-working app is still in the "master" branch, and what I'm doing in Ant
is defining jasper2 as "../<Project1>/lib/jspc/o.a.jsp.JspC" ... so it's
pointing to the "master" branch of Project1, which is still Tomcat9... I
think.

I'll create a proper branch for Project2 and see if that fixes this issue.
If not, I have a turkey to cook. :)

Cheers!

On Thu, Nov 27, 2025 at 10:03 AM Zdeněk Henek <[email protected]> wrote:

> you have typo in the search string try search for "javax.servlet"
> I have done recently upgrade from Tomcat9 to Tomcat 10.1
>
> Try searching in included jsp pages
> Maybe you use JSTL tags?
>
> Regards,
> Zdenek
>
> On Thu, Nov 27, 2025 at 2:51 PM Luke Kolin <[email protected]> wrote:
> >
> > Thanks for the suggestion. Unfortunately there are no imports in that
> JSP,
> > and "java.servlet" doesn't exist anywhere in the code base.
> >
> >
> > On Thu, Nov 27, 2025 at 9:07 AM Zdeněk Henek <[email protected]> wrote:
> >
> > > Hi,
> > >
> > > Are you sure there are no javax.servlet.... imports in afvHome.jsp ?
> > >
> > > This looks like you have there the javax. classes in jsp pages.
> > >
> > > Try Openrewrite
> > > https://docs.openrewrite.org/recipes/java/migrate/jakarta/jakartaee10
> > > to migrate from javax to jakarta package names where needed.
> > > Note some javax package prefixes are not renamed to jakarta.
> > >
> > > Regards,
> > > Zdenek Henek
> > >
> > > On Thu, Nov 27, 2025 at 12:55 PM Luke Kolin <[email protected]> wrote:
> > > >
> > > > I am attempting to port a (very old) app from Tomcat 9 to Tomcat 11,
> > > using
> > > > the new servlet/JSP package names. The app is built using an (even
> older)
> > > > Ant build script that uses JSPC to precompile the JSPs. One webapp
> builds
> > > > correctly, but the second fails - precompilation apparently
> succeeds, but
> > > > the compiled JSPs use the "old" javax.servlet packages instead of the
> > > newer
> > > > jakarta.servlet packages. Here's brief excerpt of the ant output:
> > > >
> > > > [jasper2] Nov 27, 2025 7:46:25 AM
> org.apache.jasper.servlet.TldScanner
> > > > scanJars
> > > >
> > > > [jasper2] INFO: At least one JAR was scanned for TLDs yet contained
> no
> > > > TLDs. Enable debug logging for this logger for a complete list of
> JARs
> > > that
> > > > were scanned but no TLDs were found in them. Skipping unneeded JARs
> > > during
> > > > scanning can improve startup time and JSP compilation time.
> > > >
> > > > [jasper2] Nov 27, 2025 7:46:25 AM org.apache.jasper.JspC processFile
> > > >
> > > > [jasper2] INFO: Built file [/jsp/main/afvHome.jsp]
> > > >
> > > > [jasper2] Nov 27, 2025 7:46:25 AM org.apache.jasper.JspC execute
> > > >
> > > > [jasper2] INFO: Generation completed with [0] errors in [6]
> milliseconds
> > > >
> > > > [javac] Compiling 1 source file to
> > > > C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\build\jsp
> > > >
> > > > [javac]
> > > >
> > >
> C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\src\jsp\net\afva\jsp\main\afvHome_jsp.java:24:
> > > > error: package javax.servlet.jsp does not exist
> > > >
> > > > [javac] private static final javax.servlet.jsp.JspFactory
> _jspxFactory =
> > > >
> > > > [javac] ^
> > > >
> > > > [javac]
> > > >
> > >
> C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\src\jsp\net\afva\jsp\main\afvHome_jsp.java:108:
> > > > error: package javax.el does not exist
> > > >
> > > > [javac] private volatile javax.el.ExpressionFactory
> > > _el_expressionfactory;
> > > >
> > > > [javac] ^
> > > >
> > > > [javac]
> > > >
> > >
> C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\src\jsp\net\afva\jsp\main\afvHome_jsp.java:123:
> > > > error: package javax.el does not exist
> > > >
> > > > [javac] public javax.el.ExpressionFactory
> _jsp_getExpressionFactory() {
> > > >
> > > > [javac] ^
> > > >
> > > > [javac]
> > > >
> > >
> C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\src\jsp\net\afva\jsp\main\afvHome_jsp.java:261:
> > > > error: package javax.servlet.http does not exist
> > > >
> > > > [javac] public void _jspService(final
> > > javax.servlet.http.HttpServletRequest
> > > > request, final javax.servlet.http.HttpServletResponse response)
> > > >
> > > > [javac] ^
> > > >
> > > > [javac]
> > > >
> > >
> C:\Users\LUKE~1.MAD\AppData\Local\Temp\afv\src\jsp\net\afva\jsp\main\afvHome_jsp.java:261:
> > > > error: package javax.servlet.http does not exist
> > > >
> > > > [javac] public void _jspService(final
> > > javax.servlet.http.HttpServletRequest
> > > > request, final javax.servlet.http.HttpServletResponse response)
> > > >
> > > > [javac] ^
> > > >
> > > > Why does JSPC use the "old" package names, and is there anything I
> can do
> > > > to force it? Again, the other webapp seems to work correctly, but I
> am
> > > > unsure of the differences.
> > > >
> > > > Thanks in advance
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: [email protected]
> > > For additional commands, e-mail: [email protected]
> > >
> > >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [email protected]
> For additional commands, e-mail: [email protected]
>
>