Merge branch '6.2.x'

spring-core/src/main/java/org/springframework/core/io/AbstractFileResolvingResource.java

@@ -29,6 +29,7 @@ import java.nio.channels.ReadableByteChannel;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.StandardOpenOption;
 import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
 
 import org.springframework.util.ResourceUtils;
 
@@ -44,6 +45,7 @@ import org.springframework.util.ResourceUtils;
  */
 public abstract class AbstractFileResolvingResource extends AbstractResource {
 
+	@SuppressWarnings("try")
 	@Override
 	public boolean exists() {
 		try {
@@ -86,15 +88,10 @@ public abstract class AbstractFileResolvingResource extends AbstractResource {
 				if (con instanceof JarURLConnection jarCon) {
 					// For JarURLConnection, do not check content-length but rather the
 					// existence of the entry (or the jar root in case of no entryName).
-					try {
-						if (jarCon.getEntryName() == null) {
-							// Jar root: check for the existence of any actual jar entries.
-							return jarCon.getJarFile().entries().hasMoreElements();
-						}
-						return (jarCon.getJarEntry() != null);
-					}
-					finally {
-						jarCon.getJarFile().close();
+					// getJarFile() called for enforced presence check of the jar file,
+					// throwing a NoSuchFileException otherwise (turned to false below).
+					try (JarFile jarFile = jarCon.getJarFile()) {
+						return (jarCon.getEntryName() == null || jarCon.getJarEntry() != null);
 					}
 				}
 				else if (con.getContentLengthLong() > 0) {