Correction exercice 3

package fr.imta.smartgrid;

import io.vertx.core.Handler;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.web.RoutingContext;

public class DisplayRequestHandler3 implements Handler<RoutingContext> {

    @Override
    public void handle(RoutingContext event) {
        JsonObject res = new JsonObject();
        res.put("msg","Hello world!");
        if (event.pathParams().isEmpty())
            res.put("name","anonymous");
        else res.put("name",event.pathParam("name"));
        
        event.json(res);
    }
    
}

package fr.imta.smartgrid;

import io.vertx.core.Vertx;
import io.vertx.core.datagram.DatagramSocket;
import io.vertx.ext.web.Router;
import io.vertx.ext.web.handler.BodyHandler;

public class VertxServer {
    private Vertx vertx;

    public VertxServer() {
        // initialize the Vertx server we will be using later
        this.vertx = Vertx.vertx();
    }

    public void start() {
        // create a router that we will use to route HTTP requests to different handlers
        Router router = Router.router(vertx);
        
        // register a handler that process payload of HTTP requests for us
        router.route().handler(BodyHandler.create());
        
        // we register handlers here
        DisplayRequestHandler3 myHandler = new DisplayRequestHandler3();
        
        // this will catch all call to localhost:8080/hello whatever the HTTP method is
        router.route("/hello").handler(myHandler);
        // if you do not plan to reuse the same handler for multiple routes you can write
        router.route("/hello").handler(new DisplayRequestHandler3());
        
        // this will catch GET / POST requests to localhost:8080/hello/<something>
        router.get("/hello/:name").handler(myHandler);
        router.get("/hello/:prenom/:nom").handler(new DisplayRequestHandler2());
        router.post("/hello/:name").handler(myHandler);
        
        
        // we start the HTTP server
        vertx.createHttpServer().requestHandler(router).listen(8080);


        // create a UDP socket
        DatagramSocket socket = vertx.createDatagramSocket();
        // register a handler for this server
        socket.handler(new UDPHandler());

        // start the server to listen on all interfaces on port 12345
        socket.listen(12345, "0.0.0.0");


        System.out.println("Server started");
    }

    public static void main(String[] args) {
        new VertxServer().start();
    }
}