Revert change that breaks tests in werid way

spring-boot/src/main/java/org/springframework/boot/context/embedded/AbstractEmbeddedServletContainerFactory.java

@@ -304,7 +304,7 @@ public abstract class AbstractEmbeddedServletContainerFactory implements
 		// Or maybe there is a document root in a well-known location
 		file = file != null ? file : getCommonDocumentRoot();
 		if (file == null && this.logger.isWarnEnabled()) {
-			this.logger.info("None of the document roots "
+			this.logger.debug("None of the document roots "
 					+ Arrays.asList(COMMON_DOC_ROOTS)
 					+ " point to a directory and will be ignored.");
 		}
@@ -340,11 +340,7 @@ public abstract class AbstractEmbeddedServletContainerFactory implements
 	}
 
 	private File getWarFileDocumentRoot() {
-		File file = getArchiveFileDocumentRoot(".war");
-		if (file != null) {
-			return file;
-		}
-		return getArchiveFileDocumentRoot(".jar");
+		return getArchiveFileDocumentRoot(".war");
 	}
 
 	private File getCommonDocumentRoot() {

spring-boot/src/main/java/org/springframework/boot/context/embedded/jetty/JettyEmbeddedServletContainerFactory.java

@@ -131,12 +131,7 @@ public class JettyEmbeddedServletContainerFactory extends
 		File root = getValidDocumentRoot();
 		if (root != null) {
 			try {
-				if (!root.isDirectory()) {
-					handler.setBaseResource(Resource.newClassPathResource(""));
-				}
-				else {
-					handler.setBaseResource(Resource.newResource(root));
-				}
+				handler.setBaseResource(Resource.newResource(root));
 			}
 			catch (Exception ex) {
 				throw new IllegalStateException(ex);