Java tutorial
/** * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package com.liferay.wiki.web.internal.portlet.action; import com.liferay.asset.kernel.exception.AssetCategoryException; import com.liferay.asset.kernel.exception.AssetTagException; import com.liferay.document.library.kernel.antivirus.AntivirusScannerException; import com.liferay.document.library.kernel.exception.DuplicateFileEntryException; import com.liferay.document.library.kernel.exception.DuplicateFolderNameException; import com.liferay.document.library.kernel.exception.FileExtensionException; import com.liferay.document.library.kernel.exception.FileMimeTypeException; import com.liferay.document.library.kernel.exception.FileNameException; import com.liferay.document.library.kernel.exception.FileSizeException; import com.liferay.document.library.kernel.exception.InvalidFileVersionException; import com.liferay.document.library.kernel.exception.NoSuchFileEntryException; import com.liferay.document.library.kernel.exception.NoSuchFolderException; import com.liferay.document.library.kernel.exception.SourceFileNameException; import com.liferay.dynamic.data.mapping.kernel.StorageFieldRequiredException; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.json.JSONFactoryUtil; import com.liferay.portal.kernel.json.JSONObject; import com.liferay.portal.kernel.lock.DuplicateLockException; import com.liferay.portal.kernel.model.TrashedModel; import com.liferay.portal.kernel.portlet.JSONPortletResponseUtil; import com.liferay.portal.kernel.portlet.bridges.mvc.BaseMVCActionCommand; import com.liferay.portal.kernel.portlet.bridges.mvc.MVCActionCommand; import com.liferay.portal.kernel.security.auth.PrincipalException; import com.liferay.portal.kernel.servlet.ServletResponseConstants; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.theme.ThemeDisplay; import com.liferay.portal.kernel.upload.LiferayFileItemException; import com.liferay.portal.kernel.upload.UploadException; import com.liferay.portal.kernel.upload.UploadRequestSizeException; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.ContentTypes; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.PortalUtil; import com.liferay.portal.kernel.util.PrefsPropsUtil; import com.liferay.portal.kernel.util.PropsKeys; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.kernel.util.TextFormatter; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.kernel.util.WebKeys; import com.liferay.taglib.util.RestoreEntryUtil; import com.liferay.trash.kernel.util.TrashUtil; import com.liferay.wiki.constants.WikiPortletKeys; import com.liferay.wiki.exception.NoSuchNodeException; import com.liferay.wiki.exception.NoSuchPageException; import com.liferay.wiki.web.internal.WikiAttachmentsHelper; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.PortletRequest; import javax.portlet.PortletResponse; import javax.servlet.http.HttpServletResponse; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; /** * @author Jorge Ferrer * @author Roberto Daz */ @Component(immediate = true, property = { "javax.portlet.name=" + WikiPortletKeys.WIKI, "javax.portlet.name=" + WikiPortletKeys.WIKI_ADMIN, "javax.portlet.name=" + WikiPortletKeys.WIKI_DISPLAY, "mvc.command.name=/wiki/edit_page_attachment" }, service = MVCActionCommand.class) public class EditPageAttachmentsMVCActionCommand extends BaseMVCActionCommand { @Reference(unbind = "-") public void setWikiAttachmentsHelper(WikiAttachmentsHelper wikiAttachmentsHelper) { _wikiAttachmentsHelper = wikiAttachmentsHelper; } protected void deleteAttachment(ActionRequest actionRequest, boolean moveToTrash) throws Exception { TrashedModel trashedModel = _wikiAttachmentsHelper.deleteAttachment(actionRequest, moveToTrash); if (moveToTrash && (trashedModel != null)) { TrashUtil.addTrashSessionMessages(actionRequest, trashedModel, Constants.REMOVE); hideDefaultSuccessMessage(actionRequest); } } @Override protected void doProcessAction(ActionRequest actionRequest, ActionResponse actionResponse) throws Exception { String cmd = ParamUtil.getString(actionRequest, Constants.CMD); PortletConfig portletConfig = getPortletConfig(actionRequest); try { UploadException uploadException = (UploadException) actionRequest .getAttribute(WebKeys.UPLOAD_EXCEPTION); if (uploadException != null) { Throwable cause = uploadException.getCause(); if (uploadException.isExceededFileSizeLimit()) { throw new FileSizeException(cause); } if (uploadException.isExceededLiferayFileItemSizeLimit()) { throw new LiferayFileItemException(cause); } if (uploadException.isExceededUploadRequestSizeLimit()) { throw new UploadRequestSizeException(cause); } throw new PortalException(cause); } else if (cmd.equals(Constants.ADD)) { _wikiAttachmentsHelper.addAttachments(actionRequest); } else if (cmd.equals(Constants.CHECK)) { JSONObject jsonObject = RestoreEntryUtil.checkEntry(actionRequest); JSONPortletResponseUtil.writeJSON(actionRequest, actionResponse, jsonObject); return; } else if (cmd.equals(Constants.DELETE)) { deleteAttachment(actionRequest, false); } else if (cmd.equals(Constants.EMPTY_TRASH)) { _wikiAttachmentsHelper.emptyTrash(actionRequest); } else if (cmd.equals(Constants.MOVE_TO_TRASH)) { deleteAttachment(actionRequest, true); } else if (cmd.equals(Constants.RENAME)) { _wikiAttachmentsHelper.restoreRename(actionRequest); } else if (cmd.equals(Constants.RESTORE)) { _wikiAttachmentsHelper.restoreEntries(actionRequest); String redirect = ParamUtil.getString(actionRequest, "redirect"); if (Validator.isNotNull(redirect)) { actionResponse.sendRedirect(redirect); } } else if (cmd.equals(Constants.OVERRIDE)) { _wikiAttachmentsHelper.restoreOverride(actionRequest); } } catch (NoSuchNodeException | NoSuchPageException | PrincipalException e) { SessionErrors.add(actionRequest, e.getClass()); actionResponse.setRenderParameter("mvcPath", "/wiki/error.jsp"); } catch (Exception e) { handleUploadException(portletConfig, actionRequest, actionResponse, cmd, e); } } /** * TODO: Remove. This should extend from EditFileEntryAction once it is * modularized. */ protected String[] getAllowedFileExtensions(PortletConfig portletConfig, PortletRequest portletRequest, PortletResponse portletResponse) throws PortalException { return PrefsPropsUtil.getStringArray(PropsKeys.DL_FILE_EXTENSIONS, StringPool.COMMA); } /** * TODO: Remove. This should extend from EditFileEntryAction once it is * modularized. */ protected void handleUploadException(PortletConfig portletConfig, ActionRequest actionRequest, ActionResponse actionResponse, String cmd, Exception e) throws Exception { if (e instanceof AssetCategoryException || e instanceof AssetTagException) { SessionErrors.add(actionRequest, e.getClass(), e); } else if (e instanceof AntivirusScannerException || e instanceof DuplicateFileEntryException || e instanceof DuplicateFolderNameException || e instanceof FileExtensionException || e instanceof FileMimeTypeException || e instanceof FileNameException || e instanceof FileSizeException || e instanceof LiferayFileItemException || e instanceof NoSuchFolderException || e instanceof SourceFileNameException || e instanceof StorageFieldRequiredException || e instanceof UploadRequestSizeException) { if (!cmd.equals(Constants.ADD_DYNAMIC) && !cmd.equals(Constants.ADD_MULTIPLE) && !cmd.equals(Constants.ADD_TEMP)) { if (e instanceof AntivirusScannerException) { SessionErrors.add(actionRequest, e.getClass(), e); } else { SessionErrors.add(actionRequest, e.getClass()); } return; } else if (cmd.equals(Constants.ADD_TEMP)) { hideDefaultErrorMessage(actionRequest); } if (e instanceof AntivirusScannerException || e instanceof DuplicateFileEntryException || e instanceof FileExtensionException || e instanceof FileNameException || e instanceof FileSizeException || e instanceof UploadRequestSizeException) { HttpServletResponse response = PortalUtil.getHttpServletResponse(actionResponse); response.setContentType(ContentTypes.TEXT_HTML); response.setStatus(HttpServletResponse.SC_OK); String errorMessage = StringPool.BLANK; int errorType = 0; ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY); if (e instanceof AntivirusScannerException) { AntivirusScannerException ase = (AntivirusScannerException) e; errorMessage = themeDisplay.translate(ase.getMessageKey()); errorType = ServletResponseConstants.SC_FILE_ANTIVIRUS_EXCEPTION; } if (e instanceof DuplicateFileEntryException) { errorMessage = themeDisplay.translate("please-enter-a-unique-document-name"); errorType = ServletResponseConstants.SC_DUPLICATE_FILE_EXCEPTION; } else if (e instanceof FileExtensionException) { errorMessage = themeDisplay.translate("please-enter-a-file-with-a-valid-extension-x", StringUtil .merge(getAllowedFileExtensions(portletConfig, actionRequest, actionResponse))); errorType = ServletResponseConstants.SC_FILE_EXTENSION_EXCEPTION; } else if (e instanceof FileNameException) { errorMessage = themeDisplay.translate("please-enter-a-file-with-a-valid-file-name"); errorType = ServletResponseConstants.SC_FILE_NAME_EXCEPTION; } else if (e instanceof FileSizeException) { long fileMaxSize = PrefsPropsUtil.getLong(PropsKeys.DL_FILE_MAX_SIZE); if (fileMaxSize == 0) { fileMaxSize = PrefsPropsUtil.getLong(PropsKeys.UPLOAD_SERVLET_REQUEST_IMPL_MAX_SIZE); } errorMessage = themeDisplay.translate( "please-enter-a-file-with-a-valid-file-size-no-larger" + "-than-x", TextFormatter.formatStorageSize(fileMaxSize, themeDisplay.getLocale())); errorType = ServletResponseConstants.SC_FILE_SIZE_EXCEPTION; } JSONObject jsonObject = JSONFactoryUtil.createJSONObject(); jsonObject.put("message", errorMessage); jsonObject.put("status", errorType); JSONPortletResponseUtil.writeJSON(actionRequest, actionResponse, jsonObject); } if (e instanceof AntivirusScannerException) { SessionErrors.add(actionRequest, e.getClass(), e); } else { SessionErrors.add(actionRequest, e.getClass()); } } else if (e instanceof DuplicateLockException || e instanceof InvalidFileVersionException || e instanceof NoSuchFileEntryException || e instanceof PrincipalException) { if (e instanceof DuplicateLockException) { DuplicateLockException dle = (DuplicateLockException) e; SessionErrors.add(actionRequest, dle.getClass(), dle.getLock()); } else { SessionErrors.add(actionRequest, e.getClass()); } actionResponse.setRenderParameter("mvcPath", "/html/porltet/document_library/error.jsp"); } else { Throwable cause = e.getCause(); if (cause instanceof DuplicateFileEntryException) { SessionErrors.add(actionRequest, DuplicateFileEntryException.class); } else { throw e; } } } private WikiAttachmentsHelper _wikiAttachmentsHelper; }