Java中常用的代理技术

public class ProxyTest {

 public interface F

    {

 public void say();

    }

 public interface O

    {

 public void sayOther();

    }

    @Test

 public void jdkTest() {

 Object obj = Proxy.newProxyInstance(this.getClass().getClassLoader(), new Class[] {F.class,O.class}, new InvocationHandler() {

            @Override

 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {

 F f = new F() {

                    @Override

 public void say() {

                        System.out.println("say F");

                    }

                };

 if(method.getName().equals("say")) {

                }

                System.out.println("say P");

                f.say();

 return null;

            }

        });

 F f = (F)obj;

        f.say();

    }

}

// 注意不能放在但愿你测试类中，否则会报错

// Superclass has no null constructors but no arguments were given

public class FD {

 public void say() {

        System.out.println("");

    }

}

@Test

public void cglibTest() {

 Enhancer enhancer = new Enhancer();

    enhancer.setSuperclass(FD.class);

    enhancer.setCallback(new MethodInterceptor() {

        @Override

 public Object intercept(Object source, Method method, Object[] args,MethodProxy methodProxy) throws Throwable 

        {

            System.out.println("say Cglib");

 Object result = methodProxy.invokeSuper(source, args);

 return result;

        }

    });

 ///

 FD f = (FD) enhancer.create();//new Class[] {this.getClass()}, new Object[] {this});//create();

    f.say();

}