package 设计模式;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Proxy;//主题接口interface  Isubject{    public void f1();    public void f2();}class Subject implements Isubject{    @Override    public void f1() {        // TODO Auto-generated method stub        System.out.println("调用方法1");            }    @Override    public void f2() {        // TODO Auto-generated method stub        System.out.println("调用方法2");            }}//静态代理类的实现class  StaticProxy implements Isubject{    //被代理的对象    private Isubject real=null;    public StaticProxy(Isubject real)    {        this.real =real;    }    @Override    public void f1() {        System.out.println("调用前处理");        real.f1();        System.out.println("调用后处理");            }    @Override    public void f2() {        // TODO Auto-generated method stub        System.out.println("调用前处理");        real.f2();        System.out.println("调用后处理");            }    }class Handler implements InvocationHandler{    private Isubject real=null; //一个实际主题    public  Handler(Isubject real)    {        this.real=real;    }    @Override    public Object invoke(Object proxy, Method method, Object[] args)            throws Throwable {        System.out.println("before"+method.getName());        method.invoke(real, args);        System.out.println("after"+method.getName());        return null;            }}public class 动态代理2 {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        //静态代理类的测试        Subject sub=new Subject();        //StaticProxy sp=new StaticProxy(sub);        //sp.f1();        ClassLoader loader=sub.getClass().getClassLoader();//获得具体类的加载器        Class[] interfaces=sub.getClass().getInterfaces();        Handler h=new Handler(sub);        Proxy proxy=(Proxy) Proxy.newProxyInstance(loader, interfaces, h);        ((Isubject) proxy).f1();        ((Isubject) proxy).f2();                                                            }}