Java设计模式-动态代理

#接口类名Isinger

public interface Isinger {
    void Say();
}

#接口的实现类 Singer

public class Singer implements Isinger{
    @Override
    public void Say() {
        System.out.println("唱歌");
    }
}

#单元用例测试

public class TestDongProxy {
    @Test
    public void testDongProxy() {
        Singer s = new Singer();

//获取类的加载器，获取类的元素（方法 属性）  
        Isinger isingerproxy = (Isinger) Proxy.newProxyInstance(Singer.class.getClassLoader(),
                Singer.class.getInterfaces(), new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        System.out.println("我是巨星");//前置
                        Object o = method.invoke(s, args);
                        System.out.println("唱的非常好！！！");//后置
                        return o;
                    }
                });
        isingerproxy.Say();
    }
}