org.springframework.web.reactive.config.EnableWebFlux Maven / Gradle / Ivy
/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.springframework.web.reactive.config;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.context.annotation.Import;
/**
* Adding this annotation to an {@code @Configuration} class imports the Spring
* WebFlux configuration from {@link WebFluxConfigurationSupport} that enables
* use of annotated controllers and functional endpoints.
*
* For example:
*
*
* @Configuration
* @EnableWebFlux
* @ComponentScan(basePackageClasses = MyConfiguration.class)
* public class MyConfiguration {
* }
*
*
* To customize the imported configuration, implement
* {@link WebFluxConfigurer} and one or more of its methods:
*
*
* @Configuration
* @EnableWebFlux
* @ComponentScan(basePackageClasses = MyConfiguration.class)
* public class MyConfiguration implements WebFluxConfigurer {
*
* @Override
* public void configureMessageWriters(List<HttpMessageWriter<?>> messageWriters) {
* messageWriters.add(new MyHttpMessageWriter());
* }
*
* // ...
* }
*
*
* Only one {@code @Configuration} class should have the {@code @EnableWebFlux}
* annotation in order to import the Spring WebFlux configuration. There can
* however be multiple {@code @Configuration} classes that implement
* {@code WebFluxConfigurer} that customize the provided configuration.
*
*
If {@code WebFluxConfigurer} does not expose some setting that needs to be
* configured, consider switching to an advanced mode by removing the
* {@code @EnableWebFlux} annotation and extending directly from
* {@link WebFluxConfigurationSupport} or {@link DelegatingWebFluxConfiguration} --
* the latter allows detecting and delegating to one or more
* {@code WebFluxConfigurer} configuration classes.
*
* @author Brian Clozel
* @author Rossen Stoyanchev
* @since 5.0
* @see WebFluxConfigurer
* @see WebFluxConfigurationSupport
* @see DelegatingWebFluxConfiguration
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
@Import(DelegatingWebFluxConfiguration.class)
public @interface EnableWebFlux {
}