JSP is a servlet. A better solution is to write a servlet to uniformly schedule requests and act as a route. For example, the entry point of SpringMVC is DispatcherServlet.
The following is an answer based on the respondent's question. Of course, my way is not the best.
For example, http://segmentfault.com/q/1010000002910984 uses a servlet to handle all requests under http://segmentfault.com/q/

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Created by reeco_000 on 2015/6/16.
 */
@WebServlet(name = "URLServlet",urlPatterns = "/q/*")
public class URLServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //获取请求的地址
        String id = request.getRequestURI();

        //do something
    }
}

In fact, this should not be done by jsp. It can be easily done by using url rewrite in the web server. Both nginx and apache support it. Tomcat can be configured in web.xml through a UrlRewriteFilter filter.

@netingcn’s answer seems similar. Is it completely possible for the server to do this?
If you insist on java web background implementation, then set a filter to filter all jsp page requests and change URI to the corresponding page.