Merge branch '2.3.x'

Closes gh-23815

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/ConfigFileApplicationListener.java

@@ -18,6 +18,8 @@ package org.springframework.boot.context.config;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -108,6 +110,7 @@ import org.springframework.util.StringUtils;
  * @author Andy Wilkinson
  * @author Eddú Meléndez
  * @author Madhura Bhave
+ * @author Scott Frederick
  * @since 1.0.0
  * @deprecated since 2.4.0 in favor of {@link ConfigDataEnvironmentPostProcessor}
  */
@@ -504,6 +507,14 @@ public class ConfigFileApplicationListener implements EnvironmentPostProcessor,
 						}
 						continue;
 					}
+					if (resource.isFile() && hasHiddenPathElement(resource)) {
+						if (this.logger.isTraceEnabled()) {
+							StringBuilder description = getDescription("Skipped location with hidden path element ",
+									location, resource, profile);
+							this.logger.trace(description);
+						}
+						continue;
+					}
 					String name = "applicationConfig: [" + getLocationName(location, resource) + "]";
 					List<Document> documents = loadDocuments(loader, name, resource);
 					if (CollectionUtils.isEmpty(documents)) {
@@ -540,6 +551,16 @@ public class ConfigFileApplicationListener implements EnvironmentPostProcessor,
 			}
 		}
 
+		private boolean hasHiddenPathElement(Resource resource) throws IOException {
+			String cleanPath = StringUtils.cleanPath(resource.getFile().getAbsolutePath());
+			for (Path value : Paths.get(cleanPath)) {
+				if (value.toString().startsWith(".")) {
+					return true;
+				}
+			}
+			return false;
+		}
+
 		private String getLocationName(String locationReference, Resource resource) {
 			if (!locationReference.contains("*")) {
 				return locationReference;

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/StandardConfigDataLocationResolver.java

@@ -49,6 +49,7 @@ import org.springframework.util.StringUtils;
  *
  * @author Madhura Bhave
  * @author Phillip Webb
+ * @author Scott Frederick
  * @since 2.4.0
  */
 public class StandardConfigDataLocationResolver
@@ -304,7 +305,7 @@ public class StandardConfigDataLocationResolver
 			return new Resource[] { directoryResource };
 		}
 		File directory = getDirectory(resourceLocationPattern, directoryResource);
-		File[] subDirectories = directory.listFiles(File::isDirectory);
+		File[] subDirectories = directory.listFiles(this::isVisibleDirectory);
 		if (subDirectories == null) {
 			return EMPTY_RESOURCES;
 		}
@@ -340,4 +341,8 @@ public class StandardConfigDataLocationResolver
 		}
 	}
 
+	private boolean isVisibleDirectory(File file) {
+		return file.isDirectory() && !file.getName().startsWith(".");
+	}
+
 }

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/config/ConfigFileApplicationListenerTests.java

@@ -69,6 +69,7 @@ import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
  * @author Dave Syer
  * @author Eddú Meléndez
  * @author Madhura Bhave
+ * @author Scott Frederick
  */
 @Deprecated
 @ExtendWith({ OutputCaptureExtension.class, UseLegacyProcessing.class })
@@ -1075,6 +1076,16 @@ class ConfigFileApplicationListenerTests {
 		assertThat(this.environment.getProperty("third.property")).isNull();
 	}
 
+	@Test
+	void locationsWithWildcardDirectoriesShouldIgnoreHiddenDirectories() {
+		String location = "file:src/test/resources/config/*/";
+		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.environment,
+				"spring.config.location=" + location);
+		this.initializer.setSearchNames("testproperties");
+		this.initializer.postProcessEnvironment(this.environment, this.application);
+		assertThat(this.environment.getProperty("fourth.property")).isNull();
+	}
+
 	@Test
 	void locationsWithWildcardDirectoriesShouldLoadAllFilesThatMatch() {
 		String location = "file:src/test/resources/config/*/";
@@ -1119,6 +1130,16 @@ class ConfigFileApplicationListenerTests {
 		assertThat(second).isEqualTo("ball");
 	}
 
+	@Test
+	void locationsWithWildcardFilesShouldIgnoreHiddenDirectories() {
+		String location = "file:src/test/resources/config/*/testproperties.properties";
+		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.environment,
+				"spring.config.location=" + location);
+		this.initializer.setSearchNames("testproperties");
+		this.initializer.postProcessEnvironment(this.environment, this.application);
+		assertThat(this.environment.getProperty("fourth.property")).isNull();
+	}
+
 	private Condition<ConfigurableEnvironment> matchingPropertySource(final String sourceName) {
 		return new Condition<ConfigurableEnvironment>("environment containing property source " + sourceName) {
 

spring-boot-project/spring-boot/src/test/resources/config/.hidden/testproperties.properties

+fourth.property=shouldbehidden
\ No newline at end of file