liferay总结的通用的工具类

在写增删改查的时候，自己动手写了几个通用的工具类，这几个通用的工具类也是基于API写的

第一个是liferay中的分页。跟我们做普通的web开发，分页是一样的首先需要建立一个分页的实体的类

package com.ebizwindow.example.utils;

public class Page {

	private int pageCount;

	private int pageNo;

	private int pageSize;

	public Page() {

	}

	public int getPageCount() {

		return pageCount;

	}

	public void setPageCount(int pageCount) {

		this.pageCount = pageCount;

	}

	public int getPageNo() {

		return pageNo;

	}

	public void setPageNo(int pageNo) {

		this.pageNo = pageNo;

	}

	public int getPageSize() {

		return pageSize;

	}

	public void setPageSize(int pageSize) {

		this.pageSize = pageSize;

	}

}

　　第二个是实现分页的逻辑代码

	private void doList(PortletRequest portletRequest) throws SystemException {

		long comapnyId = PortalUtil.getCompanyId(portletRequest);

		List<Orenge> results = OrengeLocalServiceUtil.searchByCompanyId(

				comapnyId, QueryUtil.ALL_POS, QueryUtil.ALL_POS);

		int pageCount = results.size();

		Page page = new Page();

		page.setPageSize(2);

		int pageNo = ParamUtil.getInteger(portletRequest, "pageNo", 0);

		if (pageNo == 0) {

			if (portletRequest.getPortletSession().getAttribute("pageNo") != null) {

				pageNo = (Integer) portletRequest.getPortletSession().getAttribute("pageNo");

			} else {

				pageNo = 1;

			}

		}

		page.setPageNo(pageNo);

		if (pageCount % page.getPageSize() == 0) {

			page.setPageCount(pageCount / page.getPageSize());

		} else {

			page.setPageCount(pageCount / page.getPageSize() + 1);

		}

		int start = (page.getPageNo() - 1) * page.getPageSize() ;

		int end = page.getPageSize() * page.getPageNo() ;

		results = OrengeLocalServiceUtil.searchByCompanyId(comapnyId, start, end);

		portletRequest.setAttribute("results", results);

		portletRequest.setAttribute("pageCount", page.getPageCount());

		portletRequest.getPortletSession().setAttribute("pageNo", pageNo);

	}

　　第二个通用的工具类是我们跳转的其他的portlet的Portlet路径的工具类

/**

 *

 */

package com.ebizwindow.example.utils;

import java.security.Key;

import java.util.List;

import javax.portlet.ActionRequest;

import javax.portlet.PortletMode;

import javax.portlet.PortletModeException;

import javax.portlet.PortletRequest;

import javax.portlet.PortletURL;

import javax.portlet.WindowState;

import javax.portlet.WindowStateException;

import javax.servlet.http.HttpServletRequest;

import com.liferay.portal.kernel.exception.PortalException;

import com.liferay.portal.kernel.exception.SystemException;

import com.liferay.portal.kernel.log.Log;

import com.liferay.portal.kernel.log.LogFactoryUtil;

import com.liferay.portal.kernel.util.HttpUtil;

import com.liferay.portal.kernel.util.StringPool;

import com.liferay.portal.kernel.util.StringUtil;

import com.liferay.portal.kernel.util.UnicodeProperties;

import com.liferay.portal.kernel.util.WebKeys;

import com.liferay.portal.model.Layout;

import com.liferay.portal.model.PortletConstants;

import com.liferay.portal.model.User;

import com.liferay.portal.security.auth.AuthTokenUtil;

import com.liferay.portal.service.LayoutLocalServiceUtil;

import com.liferay.portal.service.UserLocalServiceUtil;

import com.liferay.portal.theme.ThemeDisplay;

import com.liferay.portal.util.PortalUtil;

import com.liferay.portlet.PortletURLFactoryUtil;

import com.liferay.util.Encryptor;

import com.liferay.util.EncryptorException;

/**

 * @author Ivan Li

 *

 */

public class PortletURLUtil {

	private static Log _log = LogFactoryUtil.getLog(PortletURLUtil.class);

	public static String getPortletURLWithinCurrentPage(

			PortletRequest portletRequest, String portletId, int lifeCycle,

			String windowState, String portletMode) throws PortalException,

			SystemException {

		String portletURL = null;

		HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest);

		ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(WebKeys.THEME_DISPLAY);

		String targetPortletId = null;

		String rootPortletId = PortletConstants.getRootPortletId(portletId);

		Layout layout = themeDisplay.getLayout();

		if (layout != null) {

			UnicodeProperties typeSettings = layout.getTypeSettingsProperties();

			labelBreak:

			for(String key : typeSettings.keySet()) {

				String value = typeSettings.get(key);

				int idx = value.indexOf(rootPortletId);

				if (idx >= 0) {

					String[] portletIds = StringUtil.split(value);

					for(String id : portletIds) {

						if (id.contains(rootPortletId)) {

							targetPortletId = id;

							break labelBreak;

						}

					}

				}

			}

			StringBuilder sb = new StringBuilder();

			String layoutURL = PortalUtil.getLayoutFriendlyURL(layout, themeDisplay);

			sb.append(layoutURL);

			sb.append(StringPool.QUESTION).append("p_p_id").append(StringPool.EQUAL).append(targetPortletId);

			sb.append(StringPool.AMPERSAND).append("p_p_lifecycle").append(StringPool.EQUAL).append(lifeCycle);

			sb.append(StringPool.AMPERSAND).append("p_p_state").append(StringPool.EQUAL).append(windowState);

			sb.append(StringPool.AMPERSAND).append("p_p_mode").append(StringPool.EQUAL).append(portletMode);

			portletURL = sb.toString();

		} else {

			_log.debug("Get portlet URL by portletId within the current page!");

		}

		return portletURL;

	}

	public static String getPortletURLByUserId(PortletRequest portletRequest, long userId, String portletId) throws PortalException, SystemException {

		User user = UserLocalServiceUtil.getUserById(userId);

		long groupId = user.getGroup().getGroupId();

		return getPortletURLByGroupId(portletRequest, groupId, portletId, 1, WindowState.MAXIMIZED.toString(), PortletMode.VIEW.toString());

	}

	public static String getPortletURLByGroupId(PortletRequest portletRequest,

			long groupId, String portletId, int lifeCycle, String state,

			String mode) throws SystemException, PortalException {

		String portletURL = null;

		Layout selectedLayout = null;

		String targetPortletId = null;

		String rootPortletId = PortletConstants.getRootPortletId(portletId);

		List<Layout> layouts = LayoutLocalServiceUtil.getLayouts(groupId, false);

		if (layouts != null){

			labelBreak:

			for(Layout layout : layouts) {

				UnicodeProperties typeSettings = layout.getTypeSettingsProperties();

				for(String key : typeSettings.keySet()) {

					String value = typeSettings.get(key);

					int idx = value.indexOf(rootPortletId);

					if (idx >= 0) {

						String[] portletIds = StringUtil.split(value);

						for(String id : portletIds) {

							if (id.contains(rootPortletId)) {

								selectedLayout = layout;

								targetPortletId = id;

								break labelBreak;

							}

						}

					}

				}

			}

		}

		if (selectedLayout != null) {

			StringBuilder sb = new StringBuilder();

			HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest);

			ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(WebKeys.THEME_DISPLAY);

			String layoutURL = PortalUtil.getLayoutFriendlyURL(selectedLayout, themeDisplay);

			sb.append(layoutURL);

			sb.append(StringPool.QUESTION).append("p_auth").append(StringPool.EQUAL);

			sb.append(processValue(null, AuthTokenUtil.getToken(request)));

			sb.append(StringPool.AMPERSAND).append("p_p_id").append(StringPool.EQUAL).append(targetPortletId);

			sb.append(StringPool.AMPERSAND).append("p_p_lifecycle").append(StringPool.EQUAL).append(lifeCycle);

			sb.append(StringPool.AMPERSAND).append("p_p_state").append(StringPool.EQUAL).append(state);

			sb.append(StringPool.AMPERSAND).append("p_p_mode").append(StringPool.EQUAL).append(mode);

			portletURL = sb.toString();

		} else {

			_log.debug("Get Portlet URL By UserId and portletId with empty result!");

		}

		return portletURL;

	}

	public static PortletURL getPortletURL(ActionRequest actionRequest) throws PortalException, SystemException {

		long groupId = PortalUtil.getScopeGroupId(actionRequest);

		String portletId = PortalUtil.getPortletId(actionRequest);

		long plid = PortalUtil.getPlidFromPortletId(groupId, portletId);

		PortletURL redirectURL = PortletURLFactoryUtil.create(PortalUtil.getHttpServletRequest(actionRequest),

				portletId, plid, PortletRequest.ACTION_PHASE);

		try {

			redirectURL.setPortletMode(actionRequest.getPortletMode());

			redirectURL.setWindowState(actionRequest.getWindowState());

		} catch (PortletModeException e) {

			_log.error(e);

		} catch (WindowStateException e) {

			_log.error(e);

		}

		return redirectURL;

	}

	private static String processValue(Key key, String value) {

		if (key == null) {

			return HttpUtil.encodeURL(value);

		} else {

			try {

				return HttpUtil.encodeURL(Encryptor.encrypt(key, value));

			} catch (EncryptorException ee) {

				return value;

			}

		}

	}

}