Im Haupttutorial haben Sie gelesen, wie Sie Ihrer Anwendung [benutzerdefinierte Middleware](../tutorial/middleware.md){.internal-link target=_blank} hinzufügen können.

Und dann auch, wie man [CORS mittels der `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank} handhabt.

In diesem Abschnitt werden wir sehen, wie man andere Middlewares verwendet.

## ASGI-Middleware hinzufügen

	{
		api:     "inventory",
		methods: []string{http.MethodGet, http.MethodPut, http.MethodDelete},
		queries: []string{"inventory", ""},
	},
	{
		api:     "cors",
		methods: []string{http.MethodPut, http.MethodDelete},
		queries: []string{"cors", ""},
	},
	{
		api:     "metrics",
		methods: []string{http.MethodGet, http.MethodPut, http.MethodDelete},
		queries: []string{"metrics", ""},
	},
	{

              }
             },
             {
              "name": "envoy.filters.http.cors",
              "typed_config": {
               "@type": "type.googleapis.com/envoy.extensions.filters.http.cors.v3.Cors"
              }
             },
             {
              "name": "istio.stats",
              "typed_config": {

cluster_deadline                (duration)  set the deadline for cluster readiness check (default: '10s')
cors_allow_origin               (csv)       set comma separated list of origins allowed for CORS requests (default: '*')
remote_transport_deadline       (duration)  set the deadline for API requests on remote transports while proxying between federated instances e.g. "2h" (default: '2h')

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.cors;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public abstract class CorsHandler {

    protected static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";

import org.lastaflute.core.message.MessageManager;
import org.lastaflute.core.security.PrimaryCipher;
import org.lastaflute.di.core.SingletonLaContainer;
import org.lastaflute.di.core.exception.AutoBindingFailureException;
import org.lastaflute.di.core.exception.ComponentNotFoundException;
import org.lastaflute.di.core.factory.SingletonLaContainerFactory;
import org.lastaflute.di.core.smart.hot.HotdeployUtil;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.cors;

import java.util.HashMap;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class CorsHandlerFactory {

                            }
                          },
                          {
                            "name": "envoy.filters.http.cors",
                            "typed_config": {
                              "@type": "type.googleapis.com/envoy.extensions.filters.http.cors.v3.Cors"
                            }
                          },
                          {

			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         apiCorsAllowOrigin,
			Description: `set comma separated list of origins allowed for CORS requests` + defaultHelpPostfix(apiCorsAllowOrigin),
			Optional:    true,
			Type:        "csv",
		},
		config.HelpKV{
			Key:         apiRemoteTransportDeadline,

api.gsa.response.headers=
api.gsa.response.exception.included=false
api.dashboard.response.headers=
api.cors.allow.origin=*
api.cors.allow.methods=GET, POST, OPTIONS, DELETE, PUT
api.cors.max.age=3600
api.cors.allow.headers=Origin, Content-Type, Accept, Authorization, X-Requested-With
api.cors.allow.credentials=true
api.jsonp.enabled=false
api.ping.search_engine.fields=status,timed_out