Nodejs and Tomcat listening on same port number, is this possible

I have a web application running on tomcat at a particular port number and I would like some way of intercepting http requests made in that web application in a node server.... is this possible?.

I was hoping to use the request information to open another browser displaying info on the request (this is me purely playing with node). I have the node server listening on the port using the sample server code below and it works when the tomcat app isnt running... when tomcat is running on the port it doesnt work..

Is there a way to do this?

var http = require('http');
   http.createServer(function (req, res) {
   res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('Hello World\n');
}).listen(8080);
console.log('Server running at 8080');