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.weather.portlet; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.servlet.SessionMessages; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.util.bridges.mvc.MVCPortlet; import java.io.IOException; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.PortletException; import javax.portlet.PortletPreferences; import javax.portlet.ValidatorException; /** * @author Brian Wing Shun Chan */ public class WeatherPortlet extends MVCPortlet { @Override public void processAction(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException { updatePreferences(actionRequest, actionResponse); } protected void updatePreferences(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException { String cmd = ParamUtil.getString(actionRequest, Constants.CMD); if (!cmd.equals(Constants.UPDATE)) { return; } PortletPreferences preferences = actionRequest.getPreferences(); String[] zips = StringUtil.split(ParamUtil.getString(actionRequest, "zips"), "\n"); boolean fahrenheit = ParamUtil.get(actionRequest, "fahrenheit", true); preferences.setValues("zips", zips); preferences.setValue("fahrenheit", String.valueOf(fahrenheit)); try { preferences.store(); } catch (ValidatorException ve) { SessionErrors.add(actionRequest, ValidatorException.class.getName(), ve); return; } PortletConfig portletConfig = getPortletConfig(); SessionMessages.add(actionRequest, portletConfig.getPortletName() + SessionMessages.KEY_SUFFIX_UPDATED_PREFERENCES); } }