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.portal.kernel.io.unsync.UnsyncByteArrayInputStream; import com.liferay.portal.kernel.log.Log; import com.liferay.portal.kernel.log.LogFactoryUtil; import com.liferay.portal.kernel.portlet.PortletURLFactoryUtil; import com.liferay.portal.kernel.portlet.bridges.mvc.BaseMVCActionCommand; import com.liferay.portal.kernel.portlet.bridges.mvc.MVCActionCommand; import com.liferay.portal.kernel.servlet.ServletResponseUtil; import com.liferay.portal.kernel.theme.ThemeDisplay; import com.liferay.portal.kernel.util.ContentTypes; import com.liferay.portal.kernel.util.MimeTypesUtil; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.PortalUtil; import com.liferay.portal.kernel.util.PropsKeys; import com.liferay.portal.kernel.util.StringBundler; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.kernel.util.WebKeys; import com.liferay.portal.util.PrefsPropsUtil; import com.liferay.portlet.documentlibrary.util.DocumentConversionUtil; import com.liferay.wiki.constants.WikiPortletKeys; import com.liferay.wiki.engine.impl.WikiEngineRenderer; import com.liferay.wiki.model.WikiPage; import com.liferay.wiki.service.WikiPageService; import com.liferay.wiki.util.WikiUtil; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.PortletMode; import javax.portlet.PortletRequest; import javax.portlet.PortletURL; import javax.portlet.WindowState; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; /** * @author Bruno Farache */ @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/export_page" }, service = MVCActionCommand.class) public class ExportPageMVCActionCommand extends BaseMVCActionCommand { @Override protected void doProcessAction(ActionRequest actionRequest, ActionResponse actionResponse) throws Exception { PortletConfig portletConfig = getPortletConfig(actionRequest); try { long nodeId = ParamUtil.getLong(actionRequest, "nodeId"); String nodeName = ParamUtil.getString(actionRequest, "nodeName"); String title = ParamUtil.getString(actionRequest, "title"); double version = ParamUtil.getDouble(actionRequest, "version"); String targetExtension = ParamUtil.getString(actionRequest, "targetExtension"); ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY); PortletURL viewPageURL = PortletURLFactoryUtil.create(actionRequest, portletConfig.getPortletName(), PortletRequest.RENDER_PHASE); viewPageURL.setParameter("mvcRenderCommandName", "/wiki/view"); viewPageURL.setParameter("nodeName", nodeName); viewPageURL.setParameter("title", title); viewPageURL.setPortletMode(PortletMode.VIEW); viewPageURL.setWindowState(WindowState.MAXIMIZED); PortletURL editPageURL = PortletURLFactoryUtil.create(actionRequest, portletConfig.getPortletName(), PortletRequest.RENDER_PHASE); editPageURL.setParameter("mvcRenderCommandName", "/wiki/edit_page"); editPageURL.setParameter("nodeId", String.valueOf(nodeId)); editPageURL.setParameter("title", title); editPageURL.setPortletMode(PortletMode.VIEW); editPageURL.setWindowState(WindowState.MAXIMIZED); HttpServletRequest request = PortalUtil.getHttpServletRequest(actionRequest); HttpServletResponse response = PortalUtil.getHttpServletResponse(actionResponse); getFile(nodeId, title, version, targetExtension, viewPageURL, editPageURL, themeDisplay, request, response); actionResponse.setRenderParameter("mvcPath", "/null.jsp"); } catch (Exception e) { String host = PrefsPropsUtil.getString(PropsKeys.OPENOFFICE_SERVER_HOST); if (Validator.isNotNull(host) && !host.equals(_LOCALHOST_IP) && !host.startsWith(_LOCALHOST)) { StringBundler sb = new StringBundler(3); sb.append("Conversion using a remote OpenOffice instance is "); sb.append("not fully supported. Please use a local instance "); sb.append("to prevent any limitations and problems."); _log.error(sb.toString()); } PortalUtil.sendError(e, actionRequest, actionResponse); } } protected void getFile(long nodeId, String title, double version, String targetExtension, PortletURL viewPageURL, PortletURL editPageURL, ThemeDisplay themeDisplay, HttpServletRequest request, HttpServletResponse response) throws Exception { WikiPage page = _wikiPageService.getPage(nodeId, title, version); String content = page.getContent(); String attachmentURLPrefix = WikiUtil.getAttachmentURLPrefix(themeDisplay.getPathMain(), themeDisplay.getPlid(), nodeId, title); try { content = _wikiEngineRenderer.convert(page, viewPageURL, editPageURL, attachmentURLPrefix); } catch (Exception e) { _log.error( "Error formatting the wiki page " + page.getPageId() + " with the format " + page.getFormat(), e); } StringBundler sb = new StringBundler(17); sb.append("<!DOCTYPE html>"); sb.append("<html>"); sb.append("<head>"); sb.append("<meta content=\""); sb.append(ContentTypes.TEXT_HTML_UTF8); sb.append("\" http-equiv=\"content-type\" />"); sb.append("<base href=\""); sb.append(themeDisplay.getPortalURL()); sb.append("\" />"); sb.append("</head>"); sb.append("<body>"); sb.append("<h1>"); sb.append(title); sb.append("</h1>"); sb.append(content); sb.append("</body>"); sb.append("</html>"); InputStream is = new UnsyncByteArrayInputStream(sb.toString().getBytes(StringPool.UTF8)); String sourceExtension = "html"; String fileName = title.concat(StringPool.PERIOD).concat(sourceExtension); if (Validator.isNotNull(targetExtension)) { String id = page.getUuid(); File convertedFile = DocumentConversionUtil.convert(id, is, sourceExtension, targetExtension); if (convertedFile != null) { fileName = title.concat(StringPool.PERIOD).concat(targetExtension); is = new FileInputStream(convertedFile); } } String contentType = MimeTypesUtil.getContentType(fileName); ServletResponseUtil.sendFile(request, response, fileName, is, contentType); } @Reference(unbind = "-") protected void setWikiEngineRenderer(WikiEngineRenderer wikiEngineRenderer) { _wikiEngineRenderer = wikiEngineRenderer; } @Reference(unbind = "-") protected void setWikiPageService(WikiPageService wikiPageService) { _wikiPageService = wikiPageService; } private static final String _LOCALHOST = "localhost"; private static final String _LOCALHOST_IP = "127.0.0.1"; private static final Log _log = LogFactoryUtil.getLog(ExportPageMVCActionCommand.class); private WikiEngineRenderer _wikiEngineRenderer; private WikiPageService _wikiPageService; }