Java tutorial
/** * Copyright (c) 2000-2012 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.portlet.usersadmin.action; import com.liferay.portal.ImageTypeException; import com.liferay.portal.NoSuchOrganizationException; import com.liferay.portal.kernel.io.ByteArrayFileInputStream; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.upload.UploadException; import com.liferay.portal.kernel.upload.UploadPortletRequest; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StreamUtil; import com.liferay.portal.security.auth.PrincipalException; import com.liferay.portal.service.LayoutSetServiceUtil; import com.liferay.portal.struts.PortletAction; import com.liferay.portal.util.PortalUtil; import java.io.File; import java.io.InputStream; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.RenderRequest; import javax.portlet.RenderResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; /** * @author Brian Wing Shun Chan * @author Julio Camarero */ public class EditOrganizationLogoAction extends PortletAction { @Override public void processAction(ActionMapping mapping, ActionForm form, PortletConfig portletConfig, ActionRequest actionRequest, ActionResponse actionResponse) throws Exception { try { updateLogo(actionRequest); sendRedirect(actionRequest, actionResponse); } catch (Exception e) { if (e instanceof ImageTypeException || e instanceof NoSuchOrganizationException || e instanceof PrincipalException) { SessionErrors.add(actionRequest, e.getClass().getName()); setForward(actionRequest, "portlet.users_admin.error"); } else if (e instanceof UploadException) { SessionErrors.add(actionRequest, e.getClass().getName()); } else { throw e; } } } @Override public ActionForward render(ActionMapping mapping, ActionForm form, PortletConfig portletConfig, RenderRequest renderRequest, RenderResponse renderResponse) throws Exception { return mapping.findForward(getForward(renderRequest, "portlet.users_admin.edit_organization_logo")); } protected void updateLogo(ActionRequest actionRequest) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(actionRequest); long groupId = ParamUtil.getLong(uploadPortletRequest, "groupId"); InputStream inputStream = null; try { File file = uploadPortletRequest.getFile("fileName"); inputStream = new ByteArrayFileInputStream(file, 1024); inputStream.mark(0); LayoutSetServiceUtil.updateLogo(groupId, true, true, inputStream, false); inputStream.reset(); LayoutSetServiceUtil.updateLogo(groupId, false, true, inputStream, false); } finally { StreamUtil.cleanUp(inputStream); } } }