上一篇写了Liferay源代码的编译和二次开发环境的生成(ext工程),下面将介绍在二次开发环境上搭建自己的开发框架.
用Eclipse打开编译Liferay源代码生成的ext扩展开发环境,如下图
主要介绍ext-ejb和ext-web两个目录,利用Liferay的ant工具可以自动生成一套对于数据库表CURD的处理类,但是为符合自己的开发习惯,我在ext环境上搭建了自己的开发框架,主要包括两大块,第一是Hibernate数据访问层的封装,二是Struts的集成,集成了DispatchAction的多方法的功能.
下面介绍如何对Hibernate数据访问层进行封装ext-ejb/classes/META-INF 目录下面的ext-hbm.xml是Hibernate映射文件,ext-spring-professional.xml是Spring配置文件,对于ext-hbm.xml文件就不做解释了下面是Hibernate数据访问层的Spring的配置代码
<beanid="cn.pisoft.portlet.hibernate.HibernateService.professional"class="cn.pisoft.portlet.hibernate.impl.HibernateServiceImpl"lazy-init="true"/><beanid="cn.pisoft.portlet.hibernate.HibernateService.transaction"class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"lazy-init="true"><propertyname="transactionManager"><refbean="liferayTransactionManager"/></property><propertyname="target"><refbean="cn.pisoft.portlet.hibernate.HibernateService.professional"/></property><propertyname="transactionAttributes"><props><propkey="*">PROPAGATION_REQUIRED</prop></props></property></bean><beanid="cn.pisoft.portlet.hibernate.factory.HibernateServiceFactory"class="cn.pisoft.portlet.hibernate.factory.HibernateServiceFactory"lazy-init="true"><propertyname="service"><refbean="cn.pisoft.portlet.hibernate.HibernateService.transaction"/></property></bean><beanid="cn.pisoft.portlet.hibernate.impl.HibernateDaoImpl"class="cn.pisoft.portlet.hibernate.impl.HibernateDaoImpl"lazy-init="true"><propertyname="dataSource"><refbean="liferayDataSource"/></property><propertyname="sessionFactory"><refbean="liferaySessionFactory"/></property></bean><beanid="cn.pisoft.portlet.hibernate.util.HibernateDaoUtil"class="cn.pisoft.portlet.hibernate.util.HibernateDaoUtil"lazy-init="true"><propertyname="dao"><refbean="cn.pisoft.portlet.hibernate.impl.HibernateDaoImpl"/></property></bean>
下面是相关的JAVA类和接口
HibernateDao.java 接口
packagecn.pisoft.portlet.hibernate;importjava.io.Serializable;importjava.util.List;importcn.pisoft.portlet.common.Pager;
/***//**
*<p>Title：</p>**<p>Description:</p>**<p>Copyright:Copyright(c)2007</p>**<p>Company:</p>**<p>Author:一个人的日子</p>**<p>Email:[email protected]</p>**<p>Version:1.0</p>**<p>Create2007-7-29</p>*
*/publicinterfaceHibernateDao...{publicvoidsave(Objectpo)throwsException;publicListquery(Stringhql)throwsException;publicObjectget(Classclas,Serializableid)throwsException;publicvoidupdate(Objectpo)throwsException;publicvoiddelete(Objectpo)throwsException;publicPagerqueryByPage(Stringhql,inttotalElements,intpageNumber,intpageSize)throwsException;publicPagerqueryByPage(Stringhql,intpageNumber,intpageSize)throwsException;publicvoidexecuteSql(Stringsql)throwsException;publicintgetCountByExecuteSql(Stringsql)throwsException;publicListgetTopN(Stringhql,intn)throwsException;publicListgetListByExecuteSql(Stringsq,StringcolumnNamel)throwsException;publicListgetListByExecuteSql(Stringsq,intfetchNubmer)throwsException;}
HibernateDaoImpl.java 上面接口的实现类
packagecn.pisoft.portlet.hibernate.impl;importjava.io.Serializable;importjava.sql.Connection;importjava.sql.ResultSet;importjava.sql.Statement;importjava.util.ArrayList;importjava.util.List;importorg.hibernate.Query;importorg.hibernate.Session;importcn.pisoft.portlet.common.Pager;importcn.pisoft.portlet.hibernate.HibernateDao;importcom.liferay.portal.service.persistence.BasePersistence;/***//***<p>Title：</p>**<p>Description:</p>**<p>Copyright:Copyright(c)2007</p>**<p>Company:</p>**<p>Author:一个人的日子</p>**<p>Email:[email protected]</p>**<p>Version:1.0</p>**<p>Create2007-7-29</p>**/publicclassHibernateDaoImplextendsBasePersistenceimplementsHibernateDao...{
publicListquery(Stringhql)throwsException...{Listlist=null;Sessionsession=null;session=this.openSession();list=session.createQuery(hql).list();this.closeSession(session);returnlist;
}publicvoidsave(Objectpo)throwsException...{Sessionsession=null;session=this.openSession();session.save(po);this.closeSession(session);}publicObjectget(Classclas,Serializableid)throwsException...{Sessionsession=null;session=this.openSession();Objecto=session.get(clas,id);this.closeSession(session);returno;}publicvoidupdate(Objectpo)throwsException...{Sessionsession=null;session=this.openSession();session.update(po);this.closeSession(session);}publicvoiddelete(Objectpo)throwsException...{Sessionsession=null;session=this.openSession();session.delete(po);this.closeSession(session);}publicPagerqueryByPage(Stringhql,inttotalElements,intpageNumber,intpageSize)throwsException...{Sessionsession=null;session=this.openSession();Pagerpage=newPager();page.setPageNumber(pageNumber);page.setPageSize(pageSize);page.setTotalElements(totalElements);Listlist=null;Queryquery=session.createQuery(hql);query.setFirstResult((pageNumber-1)*pageSize);query.setMaxResults(pageSize);list=query.list();page.setElements(list);this.closeSession(session);returnpage;}publicPagerqueryByPage(Stringhql,intpageNumber,intpageSize)throwsException...{Sessionsession=null;session=this.openSession();Pagerpage=newPager();page.setPageNumber(pageNumber);page.setPageSize(pageSize);inttotalElements=0;StringstaticSql=hql.trim();if(staticSql.startsWith("select")||staticSql.startsWith("SELECT"))...{intfromIndex=staticSql.indexOf("from");intFROMIndex=staticSql.indexOf("FROM");if(FROMIndex!=-1&&fromIndex>FROMIndex)...{fromIndex=FROMIndex;}if(fromIndex==-1)...{fromIndex=0;}staticSql=staticSql.substring(fromIndex);}intorderByIndex=staticSql.indexOf("orderby");if(orderByIndex!=-1)...{staticSql=staticSql.substring(0,orderByIndex);}Queryquery=session.createQuery("selectcount(*)"+staticSql);Listlist=query.list();if(list!=null&&list.get(0)!=null)...{totalElements=((Long)list.get(0)).intValue();}page.setTotalElements(totalElements);query=session.createQuery(hql);query.setFirstResult((pageNumber-1)*pageSize);query.setMaxResults(pageSize);list=query.list();page.setElements(list);this.closeSession(session);returnpage;}publicvoidexecuteSql(Stringsql)throwsException...{Sessionsession=null;
