Dao 处理

1. 写一个基础的接口和类来做基本的操作

/**
 * 
 */
package com.wolfgang.dao;

import java.util.List;

/**
 * @author Administrator
 *
 */
public interface IBaseDao {
    public void save(Object obj);
    public void update(Object obj);
    public void delete(Object obj);
    public <T> T findById(Class<T> className, int id);
    public <T> List<T> getAll(Class<T> className);
}

/**
 * 
 */
package com.wolfgang.dao;

import java.util.List;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

/**
 * @author Administrator
 * 
 */
public class BaseDaoImp extends HibernateDaoSupport implements IBaseDao {

    public Object get(Integer id) {
        return getHibernateTemplate().get(Object.class, id);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.wolfgang.dao.IBaseDao#save(java.lang.Object)
     */
    @Override
    public void save(Object obj) {
        getHibernateTemplate().save(obj);
    }

    /* (non-Javadoc)
     * @see com.wolfgang.dao.IBaseDao#update(java.lang.Object)
     */
    @Override
    public void update(Object obj) {
        getHibernateTemplate().update(obj);        
    }

    /* (non-Javadoc)
     * @see com.wolfgang.dao.IBaseDao#delete(java.lang.Object)
     */
    @Override
    public void delete(Object obj) {
        getHibernateTemplate().delete(obj);
    }

    /* (non-Javadoc)
     * @see com.wolfgang.dao.IBaseDao#findById(int)
     */
    @Override
    public <T> T findById(Class<T> className, int id) {
        return (T)getHibernateTemplate().get(className, id);
    }

    /* (non-Javadoc)
     * @see com.wolfgang.dao.IBaseDao#getAll(java.lang.Class)
     */
    @Override
    public <T> List<T> getAll(Class<T> className) {
        return getHibernateTemplate().loadAll(className);
    }

}

2. 具体的接口和类都继承基础的类和接口

/**
 * 
 */
package com.wolfgang.dao;


/**
 * @author Administrator
 *
 */
public interface IPartyDao extends IBaseDao{
    
}

package com.wolfgang.dao;

import org.springframework.stereotype.Repository;

@Repository("partyDao")
public class PartyDaoImpl extends BaseDaoImp implements IPartyDao
{
    
}