eclipse项目spring实例

package aop; import java.lang.reflect.Proxy; class Service{ public void business(){ Dao dao = DaoFactory.create(); dao.update(); } } class DaoFactory{ public static Dao create(){ // return new ProxyDao(new JdbcDao()); MyInvocationHandler handler = new MyInvocationHandler(); return (Dao)handler.get(new HibernateDao()); } } /* class ProxyDao implements Dao{ Dao dao; public ProxyDao(Dao dao){ this.dao = dao; } public void update(){ System.out.println("abd"); dao.update(); } public void insert(){ System.out.println("abd"); dao.insert(); } } */ interface Dao{ public void update(); public void insert(); } class JdbcDao implements Dao{ public void update(){ System.out.println("jdbc update"); } public void insert(){ System.out.println("jdbc insert"); } } class HibernateDao implements Dao { public void update(){ System.out.println("Hibernate update"); } public void insert(){ System.out.println("Hibernate insert"); } } public class Test { public static void main(String[] args) { Service service = new Service(); service.business(); } }