Merge pull request #49695 from kwondh5217

* kwondh5217/main:
  Add @ConditionalOnWebApplication to NettyReactiveWebServerAutoConfiguration

Closes gh-49695

Author: philwebb

module/spring-boot-reactor-netty/src/main/java/org/springframework/boot/reactor/netty/autoconfigure/NettyReactiveWebServerAutoConfiguration.java

@@ -23,6 +23,8 @@
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.reactor.netty.NettyReactiveWebServerFactory;
 import org.springframework.boot.reactor.netty.NettyRouteProvider;
@@ -42,10 +44,12 @@
  * server.
  *
  * @author Andy Wilkinson
+ * @author Daeho Kwon
  * @since 4.0.0
  */
 @AutoConfiguration
 @ConditionalOnClass({ ReactiveHttpInputMessage.class, HttpServer.class })
+@ConditionalOnWebApplication(type = Type.REACTIVE)
 @EnableConfigurationProperties(NettyServerProperties.class)
 @Import({ ReactiveWebServerConfiguration.class, ReactorResourceFactoryConfiguration.class })
 public final class NettyReactiveWebServerAutoConfiguration {

module/spring-boot-reactor-netty/src/test/java/org/springframework/boot/reactor/netty/autoconfigure/NettyReactiveWebServerAutoConfigurationTests.java

@@ -19,10 +19,13 @@
 import org.junit.jupiter.api.Test;
 import reactor.netty.http.server.HttpServer;
 
+import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.reactor.netty.NettyReactiveWebServerFactory;
 import org.springframework.boot.reactor.netty.NettyServerCustomizer;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.boot.web.server.WebServerFactoryCustomizer;
 import org.springframework.boot.web.server.autoconfigure.reactive.AbstractReactiveWebServerAutoConfigurationTests;
+import org.springframework.boot.web.server.reactive.ReactiveWebServerFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -39,6 +42,7 @@
  * @author Raheela Aslam
  * @author Madhura Bhave
  * @author Scott Frederick
+ * @author Daeho Kwon
  */
 // @DirtiesUrlFactories
 class NettyReactiveWebServerAutoConfigurationTests extends AbstractReactiveWebServerAutoConfigurationTests {
@@ -67,6 +71,13 @@ void nettyServerCustomizerRegisteredAsBeanAndViaFactoryIsOnlyCalledOnce() {
 			});
 	}
 
+	@Test
+	void autoConfigurationDoesNotApplyToNonWebApplication() {
+		new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(NettyReactiveWebServerAutoConfiguration.class))
+			.run((context) -> assertThat(context).doesNotHaveBean(ReactiveWebServerFactory.class));
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	static class NettyServerCustomizerConfiguration {