CODEWITHSUNDEEP
javaservletsjettyembedded-jetty
skiabox
skiabox

Reputation: 3507

Is it possible to run a servlet on jetty without a web.xml file?

I am tying to run a servlet using Jetty but only by using java code(embedded jetty). Here are my two classes :

ExampleServer.java :

import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerCollection;
import org.eclipse.jetty.servlet.ServletContextHandler;

/**
 * Created by Administrator on 7/8/14.
 */
public class ExampleServer {

    public static void main(String[] args) throws Exception {
        Server server = new Server();
        ServerConnector connector = new ServerConnector(server);
        connector.setPort(8080);

        server.setConnectors(new Connector[]{connector});

        ServletContextHandler context = new ServletContextHandler();
        context.setContextPath("/hello");
        context.addServlet(HelloServlet.class, "/");

        HandlerCollection handlers = new HandlerCollection();
        handlers.setHandlers(new Handler[]{context, new DefaultHandler()});
        server.setHandler(handlers);

        server.start();
        server.join();
    }
}

HelloServlet.java :

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

/**
 * Created by Administrator on 7/8/14.
 */
public class HelloServlet extends HttpServlet{

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        response.setContentType("text/html");
        response.setStatus(HttpServletResponse.SC_OK);
        response.getWriter().println("<h1>Hello from HelloServlet</h1>");
        response.getWriter().println("session=" + request.getSession(true).getId());
    }
}

Now when I am trying to access http://localhost:8080/hello I get the following error :

HTTP ERROR: 500

Problem accessing /hello/. Reason:

java.lang.IllegalStateException: No SessionManager

Any ideas on how to fix that? Thank you.

Upvotes: 0

Views: 1278

Answers (1)

Elliott Frisch
Elliott Frisch

Reputation: 201537

You seem to have missed a step,

context.addServlet(HelloServlet.class, "/");
context.setSessionHandler(new org.eclipse.jetty.server.session.SessionHandler());

Normally, the configuration file is used to set that by default (or to use JDBCSessionManager for a cluster). Also, you only need this because you called request.getSession(true).getId()

Upvotes: 1

Related Questions