Embedded Jetty + ShiroFilter issues

I haven't asked any questions yet, but after two months of fighting over it, I finally decided to ask for help.

I'm new to Java, this is actually my first project (just for fun) in which I am trying to create a web server with Jetty (no web.xml descriptor) and Shiro authentication (with shiro.ini config file), but by what for some reason I can't get it to work. I tried almost everything I found on the internet, tried to start everything, read all the FM radio ... But nothing ...

The end situation is that I get errors that the EnvironmentListener is not registered:

javax.servlet.ServletException: java.lang.IllegalStateException: No WebEnvironment found: no EnvironmentLoaderListener registered?
    at org.apache.shiro.web.servlet.AbstractFilter.init(AbstractFilter.java:105)
    at org.eclipse.jetty.servlet.FilterHolder.initialize(FilterHolder.java:138)
    at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:852)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:341)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:742)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
    at org.eclipse.jetty.server.Server.start(Server.java:399)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
    at org.eclipse.jetty.server.Server.doStart(Server.java:366)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at MyPackage.Main.main(Main.java:89)

      

        
        
        
      

    

So after a lot of reading, I ended up with this addition to the code:

EnvironmentLoaderListener listener = new EnvironmentLoaderListener();
secured.callContextInitialized(listener, new ServletContextEvent(secured.getServletContext()));

      

        
        
        
      

    

I also had another error before related to SecurityManager not installed (or whatever), but for some reason I am not getting this error now?

To fix it I used this code (it is commented now as apparently I no longer need it, but anyway, it doesn't matter if it is commented or not at this point ...)

    //Factory<SecurityManager> factory=new IniSecurityManagerFactory("src/main/resources/shiro.ini");
    //SecurityManager securityManager=factory.getInstance();
    //SecurityUtils.setSecurityManager(securityManager);

      

        
        
        
      

    

So in the end I ended up with this error:

Exception in thread "main" java.lang.NullPointerException
    at org.eclipse.jetty.server.handler.ContextHandler$Context.log(ContextHandler.java:2059)
    at org.apache.shiro.web.env.EnvironmentLoader.initEnvironment(EnvironmentLoader.java:127)
    at org.apache.shiro.web.env.EnvironmentLoaderListener.contextInitialized(EnvironmentLoaderListener.java:58)
    at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:801)
    at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:499)
    at MyPackage.Main.main(Main.java:72)

      

        
        
        
      

    

This is my code, I think it has a lot of room for optimization, but since I'm new to Java I'm open to any suggestions ...

import java.util.EnumSet;
import javax.servlet.DispatcherType;
import javax.servlet.ServletContextEvent;
import org.apache.jasper.servlet.JspServlet;
import org.apache.log4j.PropertyConfigurator;
import org.apache.shiro.web.env.EnvironmentLoaderListener;
import org.apache.shiro.web.servlet.ShiroFilter;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.HandlerCollection;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;

public class Main {

    public static void main(String[] args) {
        System.out.println("Initializing server...");
        PropertyConfigurator.configure("config//log4j.properties");

        final ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);

        context.setContextPath("/");
        context.setResourceBase("src/main/webapp/main");
        context.setClassLoader(Thread.currentThread().getContextClassLoader());

        context.addServlet(DefaultServlet.class, "/*");

        context.addServlet("MyPackage.CheckLogin", "/checklogin");

        final ServletHolder jsp = context.addServlet(JspServlet.class, "*.jsp");
        jsp.setInitParameter("classpath", context.getClassPath());

        final ServletContextHandler secured = new ServletContextHandler(ServletContextHandler.SESSIONS);

        secured.setContextPath("/protected");
        secured.setResourceBase("src/main/webapp/protected");
        secured.setClassLoader(Thread.currentThread().getContextClassLoader());

        secured.addServlet(DefaultServlet.class, "/*");

        final ServletHolder jsp2 = secured.addServlet(JspServlet.class, "*.jsp");
        jsp2.setInitParameter("classpath", context.getClassPath());

        EnvironmentLoaderListener listener = new EnvironmentLoaderListener();
        secured.callContextInitialized(listener, new ServletContextEvent(secured.getServletContext()));  

        //Factory<SecurityManager> factory=new IniSecurityManagerFactory("src/main/resources/shiro.ini");
        //SecurityManager securityManager=factory.getInstance();
        //SecurityUtils.setSecurityManager(securityManager);

        secured.addFilter(ShiroFilter.class,"/protected/*",EnumSet.of(DispatcherType.REQUEST,DispatcherType.FORWARD,DispatcherType.INCLUDE,DispatcherType.ERROR));

        HandlerCollection hc = new HandlerCollection();
        hc.addHandler(secured);
        hc.addHandler(context);

        final Server server = new Server(8080);     
        server.setHandler(hc);

        System.out.println("Starting server...");
        try {
            server.start();
        } catch(Exception e) {
            System.out.println("Failed to start server!");
            e.printStackTrace();
            return;
        }

        System.out.println("Server running...");
        while(true) {
            try {
                server.join();
            } catch(InterruptedException e) {
                System.out.println("Server interrupted!");
            }
        }
    }
}

      

        
        
        
      

    

I've pretty much tried everything I could find, so please help me fix this as it drives me crazy now ...

If any further information is needed please let me know and I will provide it :)

edit: I tried to go through all the listed classes in the stack trace, but after a few hours spent reading various java classes and functions, I was stumped ...

Jetty jar version: jetty-all-9.3.0-M2