NullPointer touching file in webdav mounted folder 6.1.2 https://liferay.dev/c/message_boards/find_thread?p_l_id=119785294&threadId=36147795 2026-05-27T18:05:21Z 2026-05-27T18:05:21Z K Boyce https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&messageId=36147794 2014-03-26T17:35:12Z 2014-03-26T17:35:12Z

In liferay 6.1.2 GA3 I&#39;m getting following error when touching a non existent file in a mounted webdav folder<br /><br />Caused by: java.lang.NullPointerException<br /> at com.liferay.compat.hook.webdav.CompatDLWebDAVStorageImpl.isInstanceOfDLFileEntryResourceImpl(CompatDLWebDAVStorageImpl.java:299)<br /> at com.liferay.compat.hook.webdav.CompatDLWebDAVStorageImpl.getResource(CompatDLWebDAVStorageImpl.java:77)<br /> at com.liferay.compat.hook.webdav.CompatDLWebDAVStorageImpl.lockResource(CompatDLWebDAVStorageImpl.java:112)<br /> at com.liferay.portal.webdav.methods.LockMethodImpl.doProcess(LockMethodImpl.java:127)<br /> at com.liferay.portal.webdav.methods.LockMethodImpl.process(LockMethodImpl.java:51)<br /> ... 73 more<br /><br /><br />Seems to be in some kind of compatibility hook.<br /><br />Debugging from webdav servlet it seems when I do a touch it calls <br /><br />Folder folder = DLAppServiceUtil.getFolder(<br /> webDavRequest.getGroupId(), parentFolderId, name);<br /><br />in DLWebDAVStorageImpl<br />and it throws a NoSuchFolderException() since it&#39;s a new file...<br /><br />in the exception it calls:<br />FileEntry fileEntry = DLAppServiceUtil.getFileEntry(<br /> webDavRequest.getGroupId(), parentFolderId,<br /> titleWithExtension);<br />which also throws NoSuchFileEntryException and returns null causing the above NullPointerException<br /><br />but it&#39;s a new file so the resource doesn&#39;t exist so null seems correct to me and getResource should IMHO return null if that exception is thrown<br /><br />As it is now exception is thrown and not caught in<br />Resource resource = getResource(webDAVRequest); in lockResource<br /><br /><br />I modified function as follows adding if (resource == null) check:<br /> @Override<br /> public Resource getResource(WebDAVRequest webDAVRequest)<br /> throws WebDAVException {<br /><br /><br /> Resource resource = super.getResource(webDAVRequest);<br /><br /> if (resource == null) {<br /> return null;<br /> }<br /> if (isInstanceOfDLFileEntryResourceImpl(resource)) {<br /> return toCompatResource(resource);<br /> }<br /><br /> return resource;<br /><br /> }<br /><br /><br />That appears to fix issue

K Boyce 2014-03-26T17:35:12Z