daofactory.java

Spring2.0宝典

package lee;

/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class DaoFactory
{
	private static DaoFactory df;
	private DaoFactory()
	{
	}
	public static DaoFactory instance()
	{
		if (df == null)
		{
			df = new DaoFactory();
		}
		return df;
	}

	public Object getDao(String className)
	{
		try
		{
			Class daoClazz = this.getClass().getClassLoader().loadClass(className);
			return daoClazz.newInstance();
		}
		catch (Exception e)
		{
			System.err.println("创建Dao实例异常");
		}
		return null;
	}
}