ssh三大框架组合完整版本

package org.dao.impl; import java.io.Serializable; import java.lang.reflect.ParameterizedType; import java.lang.reflect.Type; import javax.annotation.Resource; import org.dao.BaseDao; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.criterion.CriteriaSpecification; import org.hibernate.criterion.DetachedCriteria; import org.hibernate.criterion.Projections; import org.springframework.stereotype.Repository; import org.util.Pager; import org.util.Utils; /** * @author 834865081@qq.com * * @Date:Nov 16, 2012 */ @Repository @SuppressWarnings("unchecked") public abstract class BaseDaoImpl<T,PK extends Serializable> implements BaseDao<T, PK>{ protected Class<T> entityClazz ; private SessionFactory sessionFactory ; public Session getSession(){ return sessionFactory.getCurrentSession() ; } /** * 通过默认构造函数，获取当前实体类型 * */ public BaseDaoImpl(){ this.entityClazz = null; Class c = getClass(); Type type = c.getGenericSuperclass(); if (type instanceof ParameterizedType) { Type[] parameterizedType = ((ParameterizedType) type).getActualTypeArguments(); this.entityClazz = (Class<T>) parameterizedType[0]; } } @Override public void delete(PK k) { getSession().delete( get( k ) ) ; } @Override public void findByPager(Pager pager, DetachedCriteria dc) { Criteria criteria = null ; if( dc != null){ criteria = dc.getExecutableCriteria( getSession() ) ; }else { criteria = getSession().createCriteria( entityClazz ) ; } criteria.setProjection( Projections.rowCount() ) ; int totalPage = Utils.toInteger( criteria.setProjection( Projections.rowCount()).uniqueResult() ) ; pager.setTotalPage( totalPage ) ; criteria.setProjection( null ) ; criteria.setResultTransformer(CriteriaSpecification.ROOT_ENTITY); criteria.setFirstResult( pager.getFirstResult() ) ; criteria.setMaxResults( pager.getPageSize() ) ; pager.setDatas( criteria.list() ) ; } @Override public T get(PK k) { return (T)getSession().get(entityClazz , k ) ; } @Override public T load(PK k) { return (T)getSession().load(entityClazz , k ) ; } @Override public void save(T t) { getSession().save( t ) ; } @Override public void update(T t) { getSession().update( t ) ; } /** * 注入SessionFactory * */ @Resource public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } }