PathMatchingResourcePatternResolver preserves caching for JNLP jar connections (SPR-9117)

Author: jhoeller

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -433,7 +433,7 @@ protected Set<Resource> doFindPathMatchingJarResources(Resource rootDirResource,
 		if (con instanceof JarURLConnection) {
 			// Should usually be the case for traditional JAR files.
 			JarURLConnection jarCon = (JarURLConnection) con;
-			jarCon.setUseCaches(false);
+			jarCon.setUseCaches(jarCon.getClass().getName().startsWith("JNLP"));
 			jarFile = jarCon.getJarFile();
 			jarFileUrl = jarCon.getJarFileURL().toExternalForm();
 			JarEntry jarEntry = jarCon.getJarEntry();