Fix missing environment prefix in child management context

module/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/server/ManagementContextFactory.java

@@ -30,6 +30,7 @@
 import org.springframework.context.annotation.AnnotationConfigRegistry;
 import org.springframework.core.env.ConfigurableEnvironment;
 import org.springframework.core.env.Environment;
+import org.springframework.core.env.PropertySource;
 import org.springframework.util.Assert;
 
 /**
@@ -40,6 +41,7 @@
  *
  * @author Andy Wilkinson
  * @author Phillip Webb
+ * @author Yongjun Hong
  * @since 4.0.0
  */
 public final class ManagementContextFactory {
@@ -63,7 +65,11 @@ public ConfigurableApplicationContext createManagementContext(ApplicationContext
 			.createEnvironment(this.webApplicationType);
 		Assert.state(childEnvironment != null, "'childEnvironment' must not be null");
 		if (parentEnvironment instanceof ConfigurableEnvironment configurableEnvironment) {
-			childEnvironment.setConversionService((configurableEnvironment).getConversionService());
+			configurableEnvironment.getPropertySources().forEach((propertySource) -> {
+				if (isManagementPropertySource(propertySource, childEnvironment)) {
+					childEnvironment.getPropertySources().addLast(propertySource);
+				}
+			});
 		}
 		ConfigurableApplicationContext managementContext = ApplicationContextFactory.DEFAULT
 			.create(this.webApplicationType);
@@ -73,6 +79,12 @@ public ConfigurableApplicationContext createManagementContext(ApplicationContext
 		return managementContext;
 	}
 
+	private boolean isManagementPropertySource(PropertySource<?> propertySource,
+			ConfigurableEnvironment childEnvironment) {
+		return propertySource.getName().contains("management")
+				&& !childEnvironment.getPropertySources().contains(propertySource.getName());
+	}
+
 	public void registerWebServerFactoryBeans(ApplicationContext parentContext,
 			ConfigurableApplicationContext managementContext, AnnotationConfigRegistry registry) {
 		if (this.autoConfigurationClasses != null && this.autoConfigurationClasses.length > 0) {

module/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/web/server/ManagementContextFactoryTests.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2012-present 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
+ *
+ *      https://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.boot.actuate.autoconfigure.web.server;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.WebApplicationType;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.MutablePropertySources;
+import org.springframework.core.env.PropertySource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link ManagementContextFactory}.
+ *
+ * author Yongjun Hong
+ */
+class ManagementContextFactoryTests {
+
+	@Test
+	void createManagementContextCopiesManagementPropertySources() {
+		ApplicationContext parentContext = mock(ApplicationContext.class);
+		ConfigurableEnvironment parentEnvironment = mock(ConfigurableEnvironment.class);
+		MutablePropertySources parentPropertySources = new MutablePropertySources();
+		PropertySource<?> managementPropertySource = new PropertySource<>("managementProperty") {
+			@Override
+			public Object getProperty(String name) {
+				return null;
+			}
+		};
+		parentPropertySources.addLast(managementPropertySource);
+		given(parentEnvironment.getPropertySources()).willReturn(parentPropertySources);
+		given(parentContext.getEnvironment()).willReturn(parentEnvironment);
+
+		ManagementContextFactory factory = new ManagementContextFactory(WebApplicationType.SERVLET, null);
+
+		ConfigurableApplicationContext managementContext = factory.createManagementContext(parentContext);
+
+		ConfigurableEnvironment childEnvironment = managementContext.getEnvironment();
+		assertThat(childEnvironment.getPropertySources().contains("managementProperty")).isTrue();
+	}
+
+}