Merge branch '2.6.x' into 2.7.x

Closes gh-31093

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java

@@ -34,8 +34,10 @@
 import org.apache.commons.logging.LogFactory;
 
 import org.springframework.beans.BeanUtils;
+import org.springframework.beans.BeansException;
 import org.springframework.beans.CachedIntrospectionResults;
 import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.groovy.GroovyBeanDefinitionReader;
 import org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory;
@@ -58,6 +60,7 @@
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.AnnotationConfigUtils;
 import org.springframework.context.annotation.ClassPathBeanDefinitionScanner;
+import org.springframework.context.annotation.ConfigurationClassPostProcessor;
 import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.core.GenericTypeResolver;
@@ -390,6 +393,7 @@ private void prepareContext(DefaultBootstrapContext bootstrapContext, Configurab
 		if (this.lazyInitialization) {
 			context.addBeanFactoryPostProcessor(new LazyInitializationBeanFactoryPostProcessor());
 		}
+		context.addBeanFactoryPostProcessor(new PropertySourceOrderingBeanFactoryPostProcessor(context));
 		// Load the sources
 		Set<Object> sources = getAllSources();
 		Assert.notEmpty(sources, "Sources must not be empty");
@@ -1368,4 +1372,28 @@ private static <E> Set<E> asUnmodifiableOrderedSet(Collection<E> elements) {
 		return new LinkedHashSet<>(list);
 	}
 
+	/**
+	 * {@link BeanFactoryPostProcessor} to re-order our property sources below any
+	 * {@code @PropertySource} items added by the {@link ConfigurationClassPostProcessor}.
+	 */
+	private static class PropertySourceOrderingBeanFactoryPostProcessor implements BeanFactoryPostProcessor, Ordered {
+
+		private final ConfigurableApplicationContext context;
+
+		PropertySourceOrderingBeanFactoryPostProcessor(ConfigurableApplicationContext context) {
+			this.context = context;
+		}
+
+		@Override
+		public int getOrder() {
+			return Ordered.HIGHEST_PRECEDENCE;
+		}
+
+		@Override
+		public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+			DefaultPropertiesPropertySource.moveToEnd(this.context.getEnvironment());
+		}
+
+	}
+
 }

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/SpringApplicationTests.java

@@ -1271,6 +1271,16 @@ void bindsEnvironmentPrefixToSpringApplication() {
 		assertThat(application.getEnvironmentPrefix()).isEqualTo("my");
 	}
 
+	@Test
+	void movesConfigClassPropertySourcesToEnd() {
+		SpringApplication application = new SpringApplication(PropertySourceConfig.class);
+		application.setWebApplicationType(WebApplicationType.NONE);
+		application.setDefaultProperties(Collections.singletonMap("test.name", "test"));
+		this.context = application.run();
+		assertThat(this.context.getEnvironment().getProperty("test.name"))
+				.isEqualTo("spring-application-config-property-source");
+	}
+
 	@Test
 	void deregistersShutdownHookForFailedApplicationContext() {
 		SpringApplication application = new SpringApplication(BrokenPostConstructConfig.class);
@@ -1660,6 +1670,12 @@ static class NotLazyBean {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	@org.springframework.context.annotation.PropertySource("classpath:spring-application-config-property-source.properties")
+	static class PropertySourceConfig {
+
+	}
+
 	static class ExitStatusException extends RuntimeException implements ExitCodeGenerator {
 
 		@Override

spring-boot-project/spring-boot/src/test/resources/spring-application-config-property-source.properties

@@ -0,0 +1 @@
+test.name=spring-application-config-property-source