On 17.02.2021 14:59, Christopher Schultz wrote:
Rony and Leo,
On 2/17/21 02:58, Rony G. Flatscher (Apache) wrote:
Hi Leo,
why would you want to do that if you could do the same with Java? What is the
motivation, the use
case for you?
How urgent is this (I may have something for both, Java EE and Jakarta EE, but need a
little bit of
time)?
—-rony
On 15.02.2021 07:29, leo wrote:
Hi there
I am trying to find out how to process servlets written in server-side JavaScript
through Tomcat.
I looked through the Tomcat FAQ and How-To but couldn't find anything. By googling I
found a way
to hook up Python through Jython's PyServlet class. I tried this and it works
great.
But I am looking for server-side JavaScript in Tomcat. I am aware of the
JavaScript engine
Nashorn. Is there a way to hook up Nashorn with a servlet class, so that Tomcat serves
JavaScript
servlets? Something like a "JavaScript Server Page" for Tomcat would be fine
too.
Many thanks for any pointers,
Leo
ps: I use Tomcat 8.5, but I could move to another Tomcat version for this.
Weird; I never saw the OP on the list, only Rony's reply.
Usually if you want to use server-side JavaScript, you use something like Node.js instead
of a servlet container. Why not use Node?
If you'd really like to use Tomcat, you will need to write a Servlet that establishes a
JavaScript environment (e.g. Nashhorn), provides all the plumbing for the
servlet-container provided resources (e.g. request, response, streams, session, etc.) as
well as error-handling, etc.
It's a big job.
I'd be surprised is nobody had built something like this before. Or maybe everybody just
uses Node.js.
+1.
On the face of it, it looks much simpler to set up a local Nodejs server, and proxy the
corresponding requests from Tomcat to it.
Perhaps have a look at this ?
https://stackoverflow.com/questions/42057314/how-to-implement-an-application-proxy-in-java-on-tomcat
Or use an Apache httpd front-end to filter requests and do the proxying to
Nodejs and Tomcat.
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