当请求到Tomcat服务器时会发生什么？

Question

When request comes to Tomcat server, it checks the web.xml and based on url-mapping, Request will be redirected. This is okay if Tomcat server has only one application deployed in it.

But what happens when Tomcat server has more than one application deployed in it? When REQUEST comes to Tomcat server, how it knows which application it has to invoke? Someone told me there is a file called server.xml (or something like that) where we provide some url-mapping to each and every application that we deploy in server. Based on that Tomcat redirects the Request to that particular application web.xml.

Can someone please let me know the flow of Request processing?

Answer 1

1) You just need to place your war files into Tomcat's webapps folder.
2) Tomcat expands each war file into a folder and automatically deploys all the war files.
3) Once the applications are up, based on the request url defined in deployment descriptor, the request is directed to a particular application.