daofactory.java

来自「struts的一些基本开发」· Java 代码 · 共 32 行

package cn.com.csuinfosoft.dao;

public class DAOFactory {
	
	private static DAOFactory daoFactory = null;
	
	private DAOFactory() {
		
	}
	
	public static DAOFactory newInstance() {
		if(daoFactory == null) {
			daoFactory = new DAOFactory();
		}
		return daoFactory;
	}
	
	public DAO buildDAO(String clazz) {
		DAO dao = null;
		try {
			dao = (DAO) Thread.currentThread().getContextClassLoader().loadClass(clazz).newInstance();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		return dao;
	}
}