Merge branch '2.2.x'

Closes gh-21321

Author: philwebb

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/server/StaticResourceJars.java

@@ -25,6 +25,7 @@
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.net.URLConnection;
+import java.nio.file.InvalidPathException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.jar.JarFile;
@@ -124,7 +125,7 @@ private boolean isResourcesJar(File file) {
 		try {
 			return isResourcesJar(new JarFile(file));
 		}
-		catch (IOException ex) {
+		catch (IOException | InvalidPathException ex) {
 			return false;
 		}
 	}

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/StaticResourceJarsTests.java

@@ -77,6 +77,15 @@ void uncPathsAreTolerated() throws Exception {
 		assertThat(staticResourceJarUrls).hasSize(1);
 	}
 
+	@Test
+	void ignoreWildcardUrls() throws Exception {
+		File jarFile = createResourcesJar("test-resources.jar");
+		URL folderUrl = jarFile.getParentFile().toURI().toURL();
+		URL wildcardUrl = new URL(folderUrl.toString() + "*.jar");
+		List<URL> staticResourceJarUrls = new StaticResourceJars().getUrlsFrom(wildcardUrl);
+		assertThat(staticResourceJarUrls).isEmpty();
+	}
+
 	private File createResourcesJar(String name) throws IOException {
 		return createJar(name, (output) -> {
 			JarEntry jarEntry = new JarEntry("META-INF/resources");