Follow symlinks during root path traversal

Closes spring-projectsgh-33424

Author: jhoeller

spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java

@@ -34,6 +34,7 @@
 import java.net.URLConnection;
 import java.nio.file.FileSystemNotFoundException;
 import java.nio.file.FileSystems;
+import java.nio.file.FileVisitOption;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collections;
@@ -871,7 +872,7 @@ protected Set<Resource> doFindPathMatchingFileResources(Resource rootDirResource
 					.formatted(rootPath.toAbsolutePath(), subPattern));
 		}
 
-		try (Stream<Path> files = Files.walk(rootPath)) {
+		try (Stream<Path> files = Files.walk(rootPath, FileVisitOption.FOLLOW_LINKS)) {
 			files.filter(isMatchingFile).sorted().map(FileSystemResource::new).forEach(result::add);
 		}
 		catch (Exception ex) {