Re: jsp precompile options

[Juan Pablo Perata]

Hi Alex, how are you?

For option (a) and using maven, you can use this plugin: jetty-jspc-maven
plugin:
https://www.eclipse.org/jetty/documentation/9.3.x/jetty-jspc-maven-plugin.html

I have being using this plugin por a long time and it fits my needs.

Hope it helps,
Juan

On Sat, Jan 27, 2018 at 10:35 AM Alex O'Ree  wrote:

> Using tomcat 8.5...
>
> I have a web app that still uses jsp's and i'm looking into a few options
> to (a) aid development and (b) reduce or eliminate the need for the JDK in
> a production setup and just run a JRE.
>
> (a) Making development easier. My project is maven based and I'd like to
> run some kind of JSP precompile at build time to ensure that all jsp files
> can be compiled (no typos). I've tried a bunch of examples from SO but
> haven't found anything that functionally works.
>
> (b) Along the same lines, if the solution to question a can inject the
> precompiled jsp files into the WAR, and that is deployed to tomcat, my
> assumption is that the JDK and thus javac would not be necessary at
> runtime. Is this an accurate statement or do other elements within tomcat
> require the JDK? This is assuming that all JSP's deployed to tomcat are
> precompiled somehow.
>

jsp precompile options

[Alex O'Ree]

Using tomcat 8.5...

I have a web app that still uses jsp's and i'm looking into a few options
to (a) aid development and (b) reduce or eliminate the need for the JDK in
a production setup and just run a JRE.

(a) Making development easier. My project is maven based and I'd like to
run some kind of JSP precompile at build time to ensure that all jsp files
can be compiled (no typos). I've tried a bunch of examples from SO but
haven't found anything that functionally works.

(b) Along the same lines, if the solution to question a can inject the
precompiled jsp files into the WAR, and that is deployed to tomcat, my
assumption is that the JDK and thus javac would not be necessary at
runtime. Is this an accurate statement or do other elements within tomcat
require the JDK? This is assuming that all JSP's deployed to tomcat are
precompiled somehow.

Re: Modify JspServlet config in application web.xml?

[Richárd Olivér Legéndi]

Thanks a lot, Christopher and Mark!

Wow, lot of knowledge and pointers to move forward. I've debugged a bit
around both ContextConfig and JspServlet, and it is exactly as you
described. This saves a hell lot of work for me and helps avoid some
stressful meetings :D

Thanks a lot! Also for the reference of the Servlet spec, I think it's time
to go through it.

Have a nice weekend, guys!

Best,
Richard


On 25 January 2018 at 11:33, Mark Thomas  wrote:

> On 25/01/18 05:25, Christopher Schultz wrote:
>
> 
>
> > You can also use  in WEB-INF/web.xml for the JSP servlet.
> > You will probably have to copy those settings you want from the JSP
> > configuration in conf/web.xml because I don't think Tomcat will merge
> > init-param between the two files.
>
> Tomcat should merge the init-param entries. The rules for merging the
> default web.xml file are as follows.
>
> 1. Web fragments, annotations etc. are merged into the main web.xml as
> per the Servlet spec merge rules to created an updated main web.xml.
>
> 2. The default web.xml is them merged into the updated main web.xml as
> if the default web.xml was a web fragment again following the Servlet
> spec rules with one exception. If there is a conflict, rather than
> triggering an error, the updated main web.xml always takes precedence.
>
> The code that does this is in ContextConfig and WebXml.
>
> Mark
>
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