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Posted to users@netbeans.apache.org by John Barrow <jb...@gmail.com> on 2022/02/23 12:12:35 UTC
.jsp files showing exceptions
Hi,
Similar to the previous email (sent a few minutes ago), I am working
with the Tomcat project and NetBeans is reporting exceptions on a few
of the .jsp files. I have attached screen shots of one (very basic)
.jsp file and I can't seem to resolve the exception. I suspect that it
is some sort of configuration issue in NetBeans / project definition
of Tomcat. Again, Tomcat is an Ant based project.
I have googled around and found very old reported issues with Eclipse
lying about exceptions, but not about NetBeans and so wondering if
this is something I should just ignore.
I used the lightbulb at the top right-hand-side of the file to disable
HTML error checking for this file but that didn't have any effect.
Again, attached three screen shots of the exceptions reported. While
not an expert, this 'Hello World' jsp page looks to be valid with it
just including a simple string expression.
Thanks
John
RE: .jsp files showing exceptions
Posted by John <jb...@gmail.com>.
Juan,
Firstly, thanks for taking an interest in my issue regarding .jsp files and
possibly taking on the challenge of installing Tomcat development environment
to investigate this.
To answer your questions from the last few emails,
Running Netbeans 12.6 on Windows 10 with JDK 17, although Tomcat is currently
built with 11, but using either JDK yields the same issue.
In essence, all I was trying to do was get Tomcat to compile and deploy on my
local machine
So I forked and cloned a copy of main from https://github.com/apache/tomcat
into its own folder (C:\Community in my case, to keep it separate from my
local developments) .
I worked through the BUILDING.txt file (Build & Test) – note ‘ant test’ takes
35 minutes on a 4 core i7 chip!
Then CONTRIBUTING.md (ant ide-netbeans) that creates a free form project with
an nbproject folder containing a number of files, including project.xml
There are a few issues with the quality of the project.xml file (that I am
still working through with Tomcat) but this doesn’t affect the two issues I
reported to Netbeans (rogue [!] for no reason and [!] for some .jsp files.
I have attached the version of project.xml that I am using and you can do a
text compare to see the differences.
You don’t need to run Tomcat to see the issues that appear in the Projects
window, but if you do then
CMD prompt (if Windows, don’t know the UNIS equivalent)
cd output\build\bin (from the folder you cloned Tomcat into)
catalina.bat run
launches Tomcat, Ctrl-C to terminate the session
I have successfully done all this and so if you have issues, rather than
spending ages trying to resolve them, happy to share my experience.
John
**From:**[Juan Algaba](mailto:jalgaba@colef.mx)
**Sent:** 24 February 2022 00:32
**To:**[John Barrow](mailto:jbarrow104@gmail.com)
**Cc:**[NetBeans User Group](mailto:users@netbeans.apache.org)
**Subject:** Re: .jsp files showing exceptions
Found this in the Tomcat source code
https://github.com/apache/tomcat/tree/main/res/ide-support/netbeans
¿Are these the instructions you followed?
On Wed, Feb 23, 2022 at 4:20 PM Juan Algaba <ja...@colef.mx> wrote:
>
> Also HOW, did you open the tomcat source code using netbeans? Netbeans
> as far as I'm aware, won't recognize ant projects without modification
> like it does with maven, it needs to generate an IDE-generated ant
> script (i.e. build.xml), ¿Did you use the "new project with existing
> sources"? ¿What options did you select during that wizard?
>
> On Wed, Feb 23, 2022 at 3:57 PM Juan Algaba <ja...@colef.mx> wrote:
> >
> > Would you mind telling us exactly what branch/commit did you clone
> > tomcat from so that people can try reproducing your issue?
> >
> > https://github.com/apache/tomcat
> >
> > Also, have you modified build.xml after cloning the project? (e.g.
> > adding <import file="nbproject/build-impl.xml"/> )
> >
> >
> > On Wed, Feb 23, 2022 at 4:13 AM John Barrow <jb...@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > Similar to the previous email (sent a few minutes ago), I am working
> > > with the Tomcat project and NetBeans is reporting exceptions on a few
> > > of the .jsp files. I have attached screen shots of one (very basic)
> > > .jsp file and I can't seem to resolve the exception. I suspect that it
> > > is some sort of configuration issue in NetBeans / project definition
> > > of Tomcat. Again, Tomcat is an Ant based project.
> > >
> > > I have googled around and found very old reported issues with Eclipse
> > > lying about exceptions, but not about NetBeans and so wondering if
> > > this is something I should just ignore.
> > >
> > > I used the lightbulb at the top right-hand-side of the file to disable
> > > HTML error checking for this file but that didn't have any effect.
> > >
> > > Again, attached three screen shots of the exceptions reported. While
> > > not an expert, this 'Hello World' jsp page looks to be valid with it
> > > just including a simple string expression.
> > >
> > > Thanks
> > >
> > > John
> > >
> > > \---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> > > For additional commands, e-mail: users-help@netbeans.apache.org
> > >
> > > For further information about the NetBeans mailing lists, visit:
> > > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
> >
> >
> >
> > \--
> >
> > -Juan Algaba
>
>
>
> \--
> -Juan Algaba
\--
-Juan Algaba
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Re: .jsp files showing exceptions
Posted by Juan Algaba <ja...@colef.mx>.
Found this in the Tomcat source code
https://github.com/apache/tomcat/tree/main/res/ide-support/netbeans
¿Are these the instructions you followed?
On Wed, Feb 23, 2022 at 4:20 PM Juan Algaba <ja...@colef.mx> wrote:
>
> Also HOW, did you open the tomcat source code using netbeans? Netbeans
> as far as I'm aware, won't recognize ant projects without modification
> like it does with maven, it needs to generate an IDE-generated ant
> script (i.e. build.xml), ¿Did you use the "new project with existing
> sources"? ¿What options did you select during that wizard?
>
> On Wed, Feb 23, 2022 at 3:57 PM Juan Algaba <ja...@colef.mx> wrote:
> >
> > Would you mind telling us exactly what branch/commit did you clone
> > tomcat from so that people can try reproducing your issue?
> >
> > https://github.com/apache/tomcat
> >
> > Also, have you modified build.xml after cloning the project? (e.g.
> > adding <import file="nbproject/build-impl.xml"/> )
> >
> >
> > On Wed, Feb 23, 2022 at 4:13 AM John Barrow <jb...@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > Similar to the previous email (sent a few minutes ago), I am working
> > > with the Tomcat project and NetBeans is reporting exceptions on a few
> > > of the .jsp files. I have attached screen shots of one (very basic)
> > > .jsp file and I can't seem to resolve the exception. I suspect that it
> > > is some sort of configuration issue in NetBeans / project definition
> > > of Tomcat. Again, Tomcat is an Ant based project.
> > >
> > > I have googled around and found very old reported issues with Eclipse
> > > lying about exceptions, but not about NetBeans and so wondering if
> > > this is something I should just ignore.
> > >
> > > I used the lightbulb at the top right-hand-side of the file to disable
> > > HTML error checking for this file but that didn't have any effect.
> > >
> > > Again, attached three screen shots of the exceptions reported. While
> > > not an expert, this 'Hello World' jsp page looks to be valid with it
> > > just including a simple string expression.
> > >
> > > Thanks
> > >
> > > John
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> > > For additional commands, e-mail: users-help@netbeans.apache.org
> > >
> > > For further information about the NetBeans mailing lists, visit:
> > > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
> >
> >
> >
> > --
> >
> > -Juan Algaba
>
>
>
> --
> -Juan Algaba
--
-Juan Algaba
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RE: .jsp files showing exceptions
Posted by John <jb...@gmail.com>.
Juan,
Just to be clear, Tomcat provides all the scripts to build the NetBeans
environment, all you need to do is open an existing project in NetBeans once
you have finished the instructions within the two files contained in the
previous email!
John
**From:**[Juan Algaba](mailto:jalgaba@colef.mx)
**Sent:** 24 February 2022 00:20
**To:**[John Barrow](mailto:jbarrow104@gmail.com)
**Cc:**[NetBeans User Group](mailto:users@netbeans.apache.org)
**Subject:** Re: .jsp files showing exceptions
Also HOW, did you open the tomcat source code using netbeans? Netbeans
as far as I'm aware, won't recognize ant projects without modification
like it does with maven, it needs to generate an IDE-generated ant
script (i.e. build.xml), ¿Did you use the "new project with existing
sources"? ¿What options did you select during that wizard?
On Wed, Feb 23, 2022 at 3:57 PM Juan Algaba <ja...@colef.mx> wrote:
>
> Would you mind telling us exactly what branch/commit did you clone
> tomcat from so that people can try reproducing your issue?
>
> https://github.com/apache/tomcat
>
> Also, have you modified build.xml after cloning the project? (e.g.
> adding <import file="nbproject/build-impl.xml"/> )
>
>
> On Wed, Feb 23, 2022 at 4:13 AM John Barrow <jb...@gmail.com> wrote:
> >
> > Hi,
> >
> > Similar to the previous email (sent a few minutes ago), I am working
> > with the Tomcat project and NetBeans is reporting exceptions on a few
> > of the .jsp files. I have attached screen shots of one (very basic)
> > .jsp file and I can't seem to resolve the exception. I suspect that it
> > is some sort of configuration issue in NetBeans / project definition
> > of Tomcat. Again, Tomcat is an Ant based project.
> >
> > I have googled around and found very old reported issues with Eclipse
> > lying about exceptions, but not about NetBeans and so wondering if
> > this is something I should just ignore.
> >
> > I used the lightbulb at the top right-hand-side of the file to disable
> > HTML error checking for this file but that didn't have any effect.
> >
> > Again, attached three screen shots of the exceptions reported. While
> > not an expert, this 'Hello World' jsp page looks to be valid with it
> > just including a simple string expression.
> >
> > Thanks
> >
> > John
> >
> > \---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> > For additional commands, e-mail: users-help@netbeans.apache.org
> >
> > For further information about the NetBeans mailing lists, visit:
> > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
> \--
>
> -Juan Algaba
\--
-Juan Algaba
\--------------------------------------------------------------------- To
unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org For additional
commands, e-mail: users-help@netbeans.apache.org For further information about
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Re: .jsp files showing exceptions
Posted by Juan Algaba <ja...@colef.mx>.
Also HOW, did you open the tomcat source code using netbeans? Netbeans
as far as I'm aware, won't recognize ant projects without modification
like it does with maven, it needs to generate an IDE-generated ant
script (i.e. build.xml), ¿Did you use the "new project with existing
sources"? ¿What options did you select during that wizard?
On Wed, Feb 23, 2022 at 3:57 PM Juan Algaba <ja...@colef.mx> wrote:
>
> Would you mind telling us exactly what branch/commit did you clone
> tomcat from so that people can try reproducing your issue?
>
> https://github.com/apache/tomcat
>
> Also, have you modified build.xml after cloning the project? (e.g.
> adding <import file="nbproject/build-impl.xml"/> )
>
>
> On Wed, Feb 23, 2022 at 4:13 AM John Barrow <jb...@gmail.com> wrote:
> >
> > Hi,
> >
> > Similar to the previous email (sent a few minutes ago), I am working
> > with the Tomcat project and NetBeans is reporting exceptions on a few
> > of the .jsp files. I have attached screen shots of one (very basic)
> > .jsp file and I can't seem to resolve the exception. I suspect that it
> > is some sort of configuration issue in NetBeans / project definition
> > of Tomcat. Again, Tomcat is an Ant based project.
> >
> > I have googled around and found very old reported issues with Eclipse
> > lying about exceptions, but not about NetBeans and so wondering if
> > this is something I should just ignore.
> >
> > I used the lightbulb at the top right-hand-side of the file to disable
> > HTML error checking for this file but that didn't have any effect.
> >
> > Again, attached three screen shots of the exceptions reported. While
> > not an expert, this 'Hello World' jsp page looks to be valid with it
> > just including a simple string expression.
> >
> > Thanks
> >
> > John
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> > For additional commands, e-mail: users-help@netbeans.apache.org
> >
> > For further information about the NetBeans mailing lists, visit:
> > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
> --
>
> -Juan Algaba
--
-Juan Algaba
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
For additional commands, e-mail: users-help@netbeans.apache.org
For further information about the NetBeans mailing lists, visit:
https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
Re: .jsp files showing exceptions
Posted by Juan Algaba <ja...@colef.mx>.
Would you mind telling us exactly what branch/commit did you clone
tomcat from so that people can try reproducing your issue?
https://github.com/apache/tomcat
Also, have you modified build.xml after cloning the project? (e.g.
adding <import file="nbproject/build-impl.xml"/> )
On Wed, Feb 23, 2022 at 4:13 AM John Barrow <jb...@gmail.com> wrote:
>
> Hi,
>
> Similar to the previous email (sent a few minutes ago), I am working
> with the Tomcat project and NetBeans is reporting exceptions on a few
> of the .jsp files. I have attached screen shots of one (very basic)
> .jsp file and I can't seem to resolve the exception. I suspect that it
> is some sort of configuration issue in NetBeans / project definition
> of Tomcat. Again, Tomcat is an Ant based project.
>
> I have googled around and found very old reported issues with Eclipse
> lying about exceptions, but not about NetBeans and so wondering if
> this is something I should just ignore.
>
> I used the lightbulb at the top right-hand-side of the file to disable
> HTML error checking for this file but that didn't have any effect.
>
> Again, attached three screen shots of the exceptions reported. While
> not an expert, this 'Hello World' jsp page looks to be valid with it
> just including a simple string expression.
>
> Thanks
>
> John
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> For additional commands, e-mail: users-help@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
--
-Juan Algaba
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
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Re: .jsp files showing exceptions
Posted by Jason Abreu <ja...@gmail.com>.
John,
I agree that the files are testing edge-cases. I have noticed other
issues with NetBeans JSP (and JSF) page parsers that have not been
working. When using Jakarta EE 9+ (using the jakarta, rather than the
javax, packages) the code completion/suggestions (ctrl+space) do not
show any of my own code; none of my CDI beans appear in the drop-down
for auto-completing my JSP/JSF expressions. Hopefully, Apache gets on
this quickly and the next version of NetBeans remedies their JSP and JSF
parsers.
I've never had good luck with escaping quotes within in-page
expressions. To me, edge cases represent exceptions and "sketchy"
practices so I have always looked for another way to accomplish the
task. If I needed the ${ characters, or a double/quote, on the page as
part of a code display then I'd be sure they were in the String object
from the back-end that was being told to display using EL. I tend to
believe my pages exists merely to display data, and call actions, from
the back end. If there's any data manipulation that needs to be done
then I perform it in my business logic so anything that needs to use the
data uses the same rules, for ease of maintenance; the "Encapsulation"
principle of Object-Oriented Programming.
Good luck to you with building Tomcat!
-- Jason Abreu
On 2/25/22 06:21, John wrote:
>
> Hi Jason,
>
> Thanks for your analysis and as you correctly point out, if I remove
> one or other of the formats.
>
> However, the Tomcat team, on approaching them, indicated that it might
> be that NetBeans was ignoring the following directive as part of its
> parser.
>
> <%@ page isELIgnored="true" %>
>
> Which (when I google it), seems to imply that the JSP EL parsing
> should be ignored and so the contents taken literally – I.e. strip out
> the external ${...} leaving <%= "hello world" %> which would be parsed
> using JSP Expression language.
>
> These examples are some of the standard Tomcat test files that they
> use to validate Tomcat and so I don’t think they will welcome it if I
> simply reverted it to JSP EL as I suspect that this has been written
> like this deliberately so that they can check that Tomcat handles the
> ‘isELIgnored’ flag when it is set to true.
>
> Could I ask for one other contribution, if you don’t mind. There was
> one other file that didn’t pass the NetBeans validation. I have
> attached a screenshot. Adjusting the text, it appears that NetBeans
> doesn’t like the escaped double quotes
>
> e.g. <tags:echo echo="${\"2\"}az-07" />
>
> If I replace them with single quotes (don’t need escaping) then
> NetBeans is happy. Again from the screenshot, you can see that the
> file has been designed to test the variations of specifying a string
> to make sure that Tomcat handles them all, so amending the source so
> that NetBeans doesn’t complain isn’t really an option.
>
> I should make it clear that I am simply someone who, in an ideal
> world, is looking to generate a clean build / UI using NetBeans, my
> preferred IDE.
>
> So, my deduction is that these two issues are boundary cases that have
> not been considered by the NetBeans JSP parser, albeit purist cases.
> If that is the case, I can raise a bug request so that they may be
> considered next time someone is reviewing the parser.
>
> John
>
> *From: *Jason Abreu <ma...@gmail.com>
> *Sent: *24 February 2022 19:50
> *To: *users@netbeans.apache.org
> *Subject: *Re: .jsp files showing exceptions
>
> John,
>
> Your syntax in the screenshot is incorrect. Use the scriptlet tag
>
> expression (the <%= ... %>) OR use the JSP Expression Language syntax
>
> (the ${ ... }). You don't use both. The current accepted
>
> standard/practice is to use the JSP EL instead of the scriptlet tag.
>
> -- Jason Abreu
>
> On 2/23/22 07:12, John Barrow wrote:
>
> > Hi,
>
> >
>
> > Similar to the previous email (sent a few minutes ago), I am working
>
> > with the Tomcat project and NetBeans is reporting exceptions on a few
>
> > of the .jsp files. I have attached screen shots of one (very basic)
>
> > .jsp file and I can't seem to resolve the exception. I suspect that it
>
> > is some sort of configuration issue in NetBeans / project definition
>
> > of Tomcat. Again, Tomcat is an Ant based project.
>
> >
>
> > I have googled around and found very old reported issues with Eclipse
>
> > lying about exceptions, but not about NetBeans and so wondering if
>
> > this is something I should just ignore.
>
> >
>
> > I used the lightbulb at the top right-hand-side of the file to disable
>
> > HTML error checking for this file but that didn't have any effect.
>
> >
>
> > Again, attached three screen shots of the exceptions reported. While
>
> > not an expert, this 'Hello World' jsp page looks to be valid with it
>
> > just including a simple string expression.
>
> >
>
> > Thanks
>
> >
>
> > John
>
> >
>
> > ---------------------------------------------------------------------
>
> > To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
>
> > For additional commands, e-mail: users-help@netbeans.apache.org
>
> >
>
> > For further information about the NetBeans mailing lists, visit:
>
> > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
> ---------------------------------------------------------------------
>
> To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
>
> For additional commands, e-mail: users-help@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
>
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
RE: .jsp files showing exceptions
Posted by John <jb...@gmail.com>.
---------------------------------------------------------------------
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Re: .jsp files showing exceptions
Posted by Jason Abreu <ja...@gmail.com>.
John,
Your syntax in the screenshot is incorrect. Use the scriptlet tag
expression (the <%= ... %>) OR use the JSP Expression Language syntax
(the ${ ... }). You don't use both. The current accepted
standard/practice is to use the JSP EL instead of the scriptlet tag.
-- Jason Abreu
On 2/23/22 07:12, John Barrow wrote:
> Hi,
>
> Similar to the previous email (sent a few minutes ago), I am working
> with the Tomcat project and NetBeans is reporting exceptions on a few
> of the .jsp files. I have attached screen shots of one (very basic)
> .jsp file and I can't seem to resolve the exception. I suspect that it
> is some sort of configuration issue in NetBeans / project definition
> of Tomcat. Again, Tomcat is an Ant based project.
>
> I have googled around and found very old reported issues with Eclipse
> lying about exceptions, but not about NetBeans and so wondering if
> this is something I should just ignore.
>
> I used the lightbulb at the top right-hand-side of the file to disable
> HTML error checking for this file but that didn't have any effect.
>
> Again, attached three screen shots of the exceptions reported. While
> not an expert, this 'Hello World' jsp page looks to be valid with it
> just including a simple string expression.
>
> Thanks
>
> John
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@netbeans.apache.org
> For additional commands, e-mail: users-help@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
---------------------------------------------------------------------
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RE: .jsp files showing exceptions
Posted by John <jb...@gmail.com>.
André,
Thanks for your suggestion, I am using JDK 11, the one that Tomcat is
currently being built with and confirmed that it is set in the project.xml
file.
I couldn’t find any other options, apart from setting the default language for
Netbeans to UTF-8,
* In netbeans.conf
* Find netbeans_default_options=...
* Add -J-Dfile.encoding=UTF-8 to the end
Unsurprisingly, this made no difference at all.
If you memory is good, do you recall where else I may look to confirm
compatibility?
John
**From:**[André Pfeiffer](mailto:pfeiffer.ufsc@gmail.com)
**Sent:** 23 February 2022 14:40
**To:**[John Barrow](mailto:jbarrow104@gmail.com)
**Subject:** Re: .jsp files showing exceptions
Hello John Barrow,
It seems you have environment/dependency issues. Have you checked the java
version being used vs target output?
It has been some time since I last used netbeans but if you go through project
properties you should find something odd.
Best regards,
André Pfeiffer
Em qua., 23 de fev. de 2022 às 09:12, John Barrow
<[jbarrow104@gmail.com](mailto:jbarrow104@gmail.com)> escreveu:
Hi,
Similar to the previous email (sent a few minutes ago), I am working
with the Tomcat project and NetBeans is reporting exceptions on a few
of the .jsp files. I have attached screen shots of one (very basic)
.jsp file and I can't seem to resolve the exception. I suspect that it
is some sort of configuration issue in NetBeans / project definition
of Tomcat. Again, Tomcat is an Ant based project.
I have googled around and found very old reported issues with Eclipse
lying about exceptions, but not about NetBeans and so wondering if
this is something I should just ignore.
I used the lightbulb at the top right-hand-side of the file to disable
HTML error checking for this file but that didn't have any effect.
Again, attached three screen shots of the exceptions reported. While
not an expert, this 'Hello World' jsp page looks to be valid with it
just including a simple string expression.
Thanks
John
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