server = new Server(port);

            final RequestHandlerImpl request_handler = new RequestHandlerImpl();
            final HandlerList handlers = new HandlerList();
            handlers.setHandlers(new Handler[] { request_handler, new DefaultHandler() });
            server.setHandler(handlers);
        }

        public void start() {
            try {
                server.start();
            } catch (final Exception e) {

{* ../../docs_src/events/tutorial001_py39.py hl[8] *}

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event { #shutdown-event }

        resource_handler.setResourceBase(docRoot.getAbsolutePath());
        Log.info("serving " + resource_handler.getBaseResource());
        final HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() });
        server.setHandler(handlers);
    }

    public void start() {
        try {
            server.start();
        } catch (final Exception e) {

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// Originally from https://github.com/gorilla/handlers with following license
// https://raw.githubusercontent.com/gorilla/handlers/master/LICENSE, forked
// and heavily modified for MinIO's internal needs.

package handlers

import (
	"net"
	"net/http"
	"regexp"
	"strings"

	"github.com/minio/minio/internal/config"

        resource_handler.setResourceBase(docRoot.getAbsolutePath());
        Log.info("serving " + resource_handler.getBaseResource());
        final HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() });
        server.setHandler(handlers);
    }

    public void start() {
        try {
            server.start();
        } catch (final Exception e) {

			return
		}

		var handler *StatelessHandler
		if subID == nil {
			handler = c.handlers.stateless[m.Handler]
		} else {
			handler = c.handlers.subStateless[*subID]
		}
		if handler == nil {
			msg := fmt.Sprintf("Invalid Handler for type: %v", m.Handler)
			if subID != nil {
				msg = fmt.Sprintf("Invalid Handler for type: %v", *subID)
			}

	success = true

	// Make sure we remove any existing headers before
	// proxying the request to another node.
	for k := range w.Header() {
		w.Header().Del(k)
	}

	f := handlers.NewForwarder(&handlers.Forwarder{
		PassHost:     true,
		RoundTripper: ep.Transport,
		ErrorHandler: func(w http.ResponseWriter, r *http.Request, err error) {
			success = false

handlers = java.util.logging.ConsoleHandler

 */
package org.apache.maven.artifact.handler.manager;

import java.util.Map;

import org.apache.maven.artifact.handler.ArtifactHandler;

/**
 */
public interface ArtifactHandlerManager {
    String ROLE = ArtifactHandlerManager.class.getName();

    ArtifactHandler getArtifactHandler(String type);

    @Deprecated
    void addHandlers(Map<String, ArtifactHandler> handlers);

{* ../../docs_src/handling_errors/tutorial002_py39.py hl[14] *}

## Установка пользовательских обработчиков исключений { #install-custom-exception-handlers }

Вы можете добавить пользовательские обработчики исключений с помощью <a href="https://www.starlette.dev/exceptions/" class="external-link" target="_blank">тех же утилит обработки исключений из Starlette</a>.